JP7673666B2 - Projection system and reflector - Google Patents

Description

The present disclosure relates to a projection system and a reflector.

2. Description of the Related Art Conventionally, there has been known an image display system including a plurality of image display devices, each of which has a rear projection type screen and a projector that projects an image onto the screen (see, for example, Japanese Patent Application Laid-Open No. 2003-233694).
In the spherical image display system described in Patent Document 1, the screens of the four image display devices are:
The screens are arranged on the front, right side, left side and bottom. Specifically, of the four image display device screens, the right side screen and the left side screen are arranged on the right and left side of the user who observes the image projected on the front screen, and the bottom screen is provided below the user. The images projected by the projectors of each image display device are
Adjacent screens may have a smooth transition or may be separate.

Japanese Patent Application Publication No. 11-064975

However, in the image display system described in Patent Document 1, in order to display a large image on each screen, it is necessary to increase the distance between the screen and the projector that projects the image onto the corresponding screen. This causes a problem that the entire image display system is likely to become large. In addition, since multiple image display devices are required, the cost of the image display system is likely to increase.
In contrast, as in the image displayed in the image display system described in Patent Document 1,
For example, it is conceivable to project images from a projector placed in a room and display them on the wall in front of the user, the right wall, the left wall, and the lower wall. However, even in this case, there is a problem in that it is necessary to increase the distance between the projector and the wall in front.
For this reason, there has been a demand for a configuration that can easily enlarge the image projected from a projector.

A projection system according to a first aspect of the present disclosure includes a projection device that projects light, a base on which the projection device is mounted, a first reflecting member that reflects the light projected from the projection device to expand the projection range of the light, and a holding mechanism that holds the first reflecting member, the holding mechanism having a movable part that changes the position of the first reflecting member relative to the projection device.

A reflection device according to a second aspect of the present disclosure is used in combination with a projection device that projects light, and reflects the light projected from the projection device, and includes a first reflection member that reflects the light projected from the projection device to expand the projection range of the light, and a holding mechanism that holds the first reflection member, the holding mechanism having a movable part that changes the position of the first reflection member relative to the projection device.

FIG. 1 is a side view showing a projection system according to a first embodiment. FIG. 1 is a schematic diagram showing a configuration of a projection device according to a first embodiment. FIG. 2 is a side view showing the reflection device and the projection device in the storage position according to the first embodiment. FIG. 2 is a perspective view showing the projection system according to the first embodiment in a state in which the base is rotated. FIG. 11 is a perspective view showing a projection device and a reflection device that configure a projection system according to a second embodiment. FIG. 11 is a perspective view showing a reflecting device according to a second embodiment. FIG. 11 is a perspective view showing a reflecting device according to a second embodiment. FIG. 11 is a side view showing a reflecting device and a projecting device in a usage position according to a second embodiment. FIG. 11 is a side view showing a reflecting device and a projecting device according to a second embodiment. FIG. 11 is a side view showing a reflecting device and a projecting device according to a second embodiment. FIG. 11 is a side view showing a reflecting device and a projecting device according to a second embodiment. FIG. 11 is a side view showing a projection system according to a second embodiment.

[First embodiment]
Hereinafter, a first embodiment of the present disclosure will be described with reference to the drawings.
[Schematic configuration of projection system]
Fig. 1 is a side view showing a projection system 1A according to this embodiment. In other words, Fig. 1 is a side view showing a reflection device 4 and a projection device 3 in a usage position, which will be described later.
The projection system 1 when the base 21 is rotated and the projection device 3 projects the image light downward.
A is shown.
1, the projection system 1A according to this embodiment includes a support device 2, a projection device 3, and a reflection device 4. In the projection system 1A, a first reflection member 41 included in the reflection device 4 is disposed on the optical path of the image light projected from the projection device 3, so that the first reflection member 41 can enlarge and project the image light, and the projection direction of the image light can be arbitrarily adjusted by operating the support device 2.
The configuration of the projection system 1A will be described in detail below.

[Configuration of the support device]
The support device 2 supports the projection device 3 and the reflection device 4. The support device 2 includes a base 21, a pedestal portion 22, and a support 23.
The base 21 is formed in a flat plate shape. The base 21 has an installation surface 21A on which the projection device 3 and the reflection device 4 are installed. In this embodiment, the projection device 3 and the reflection device 4 are fixed to the installation surface 21A.
The base portion 22 is placed on a floor or the like and supports the support column 23 .
The support pillar 23 is formed in a substantially rectangular prism shape and stands upright from the base 22. The support pillar 23 rotatably supports the base 21 about a rotation axis Rx1 perpendicular to the direction in which the support pillar 23 stands upright from the base 22. The rotation axis Rx1 is an axis perpendicular to the direction in which light is projected by the projection device 3,
When the base 22 is placed on the floor, the rotation axis Rx1 is along the horizontal direction. Therefore, the support device 2 supports the base 21 so that the base 21 can rotate about an axis perpendicular to the direction in which light is projected by the projection device 3. As described above, since the projection device 3 and the reflection device 4 are fixed to the base 21, even if the base 21 is rotated and the installation surface 21A is tilted, the projection device 3 and the reflection device 4 can be supported.
This prevents the device from falling off the installation surface 21A.

[Configuration of the Projection Device]
FIG. 2 is a schematic diagram showing the configuration of the projection device 3. As shown in FIG.
The projection device 3 projects light. In this embodiment, the projection device 3 is configured as a projector that modulates light emitted from a light source to form image light according to image information and projects the formed image light.
2, the projection device 3 includes an exterior housing 31, an image generating device 32, and a projection optical device 39. Although not shown in the figure, the projection device 3 also includes a control device that controls the operation of the projection device 3, a power supply device that supplies power to electronic components that constitute the projection device 3, and
The cooling device cools the cooling object constituting the cooling system.

[Configuration of exterior housing]
As shown in FIG. 1 , the exterior housing 31 has a top surface 311, a bottom surface 312, a front surface 313, and a rear surface 314.
2, the exterior housing 31 includes an image generating device 32, a projection optical device 39, a control device,
Houses the power supply and cooling system.

[Configuration of the image generating device]
The image generating device 32 generates image light according to image information (including an image signal) input from the control device, and emits the generated image light to the projection optical device 39. The image generating device 32 includes a light source 33, a homogenizing device 34, a color separating device 35, a relay device 36, an image forming device 37, and an optical component housing 38.
The light source 33 emits illumination light to the uniformizing device 34. The light source 33 may have the following configuration, for example:
An example of the configuration of the light source 33 is a solid-state light source that emits blue light as excitation light, and a wavelength conversion element that converts a part of the blue light emitted from the solid-state light source into fluorescence containing green light and red light. Note that, as other configurations of the light source 33, a configuration having a light source lamp such as an ultra-high pressure mercury lamp as a light source, and a configuration having a solid-state light source that individually emits blue light, green light, and red light can be exemplified.

The homogenizer 34 homogenizes the illuminance of the light beam incident from the light source 33. The homogenizer 34 includes a first lens array 341, a second lens array 342, a polarization conversion element 343, and a superimposing lens 344.
The color separation device 35 separates the light beam incident from the uniformization device 34 into red light LR, green light LG, and blue light LB. The color separation device 35 includes dichroic mirrors 351 and 352 and a reflecting mirror 353.
The relay device 36 is provided in the optical path of the red light LR, which is longer than the optical paths of the blue light LB and the green light LG, and suppresses loss of the red light LR.
It includes a reflecting mirror 362, a relay lens 363, and a reflecting mirror 364. Note that the colored light having a longer optical path than the other colored lights may be blue light LB, and the relay device 36 may be provided in the optical path of the blue light LB.

The image forming device 37 modulates the incident blue light LB, green light LG, and red light LR, and combines the modulated light of each color to form image light.
The optical system includes a field lens 371 , an incident side polarizing plate 372 , an optical modulator 373 , and an exit side polarizing plate 374 , which are provided for each R, and one optical combiner 375 .
The light modulation device 373 modulates the light emitted from the light source 33 in accordance with image information. The light modulation device 373 includes a blue light modulation device 373B that modulates the blue light LB, a green light modulation device 373G that modulates the green light LG, and a red light modulation device 373R that modulates the red light LR. In this embodiment, the light modulation device 373 is configured by a transmissive liquid crystal panel, and the entrance side polarizing plate 372, the light modulation device 373, and the exit side polarizing plate 374 configure a liquid crystal light valve.
The light combining device 375 combines the color lights modulated by the light modulation devices 373B, 373G, and 373R to form image light. The light combining device 375 outputs the formed image light to the projection optical device 39. The light combining device 375 can be configured with a cross dichroic prism, but is not limited to this, and can also be configured with a plurality of dichroic mirrors, for example.

The optical housing 38 holds the devices 34 - 36 and a field lens 371 .
The image generating device 32 is set with an illumination optical axis Ax, which is a design optical axis, and the optical component housing 38 holds the above devices 34 to 36 and the field lens 371 at predetermined positions on the illumination optical axis Ax.
The device is placed at a predetermined position in the device.

The projection optical device 39 projects the image light formed by the light combining device 375. The projection optical device 39 includes a plurality of lenses and a lens barrel that holds the plurality of lenses. In this embodiment, the projection optical device 39 projects the image light in a direction from the rear surface 314 to the front surface 313.
In addition, when the reflection device 4 is used to enlarge the image projected from the projection optical device 39, the projection device 3 projects image light that forms an image that is a left-right inversion of the image that is formed when the reflection device 4 is not used.

In the following description, the three mutually orthogonal directions are defined as the +X direction, the +Y direction, and the +Z direction.
The Z direction is the direction from the rear surface 314 to the front surface 313. The +Z direction is the direction
The +Y direction corresponds to the projection direction of the image light by the projection device 3, that is, the projection direction of the image light by the projection device 3. The +Y direction corresponds to the direction from the bottom surface 312 to the top surface 311.
The +X direction corresponds to the direction from the left side surface 316 to the right side surface 3
The direction is toward 15.
In addition, the direction opposite to the +X direction is defined as the −X direction, and the direction opposite to the +Y direction is defined as the −Y direction.
The direction opposite to the +Z direction is defined as the -Z direction.
Note that orthogonal means intersecting at a right angle.

[Configuration of Reflection Device]
1, the reflecting device 4 is installed on a base 21. The reflecting device 4 reflects the image light projected from the projection device 3. In detail, the reflecting device 4 reflects the image light projected from the projection device 3 at a wide angle, thereby expanding the projection range of the image light onto, for example, a wall surface in a living room. The reflecting device 4 includes a first reflecting member 41 and a holding mechanism 42.

First, the configuration of the holding mechanism 42 will be described.
The holding mechanism 42 holds the first reflecting member 41. The holding mechanism 42 includes two fixing portions 43,
The actuator includes two movable parts 44 and a holding part 45. Note that in Fig. 1, the fixed part 43 and the movable part 44 arranged in the +X direction are shown, and the fixed part 43 and the movable part 44 arranged in the -X direction are omitted from the illustration.

The two fixed portions 43 are spaced apart from each other in the +X direction and fixed to the base 21. Each fixed portion 43 supports a movable portion 44 rotatably about a rotation axis Rx2 along the +X direction.
The two movable parts 44 change the position of the first reflecting member 41 with respect to the projection device 3. One end of each movable part 44 is an arm rotatably supported by the fixed part 43, and the other end of each movable part 44 is connected to the holding part 45. When the movable part 44 rotates around the rotation axis Rx2, the entire holding mechanism 42 except for the fixed part 43 rotates around the rotation axis Rx2. The dimension of the movable part 44 in the extension direction of the movable part 44 from the fixed part 43 is +
The dimension of the movable part 44 in the extension direction from the fixed part 43 is a length that allows the first reflecting member 41 to be positioned outside the projection range of the image light projected from the projection device 3 when the fixed part 43 and the movable part 44 are arranged so as to be substantially parallel to each other. In other words, the dimension of the movable part 44 is a dimension that allows the first reflecting member 41 to be positioned in a position in the +Y direction with respect to the projection device 3 when the reflection device 4 is in a stored position, which will be described later.
The holding portion 45 is formed in a flat plate shape and is connected to the two movable portions 44. The holding portion 45 holds the first reflecting member 41 at a surface 45A facing the two movable portions 44.

The first reflecting member 41 reflects the image light projected from the projection device 3 to expand the projection range of the image light. The first reflecting member 41 is a convex mirror having a reflecting surface 41A that reflects the incident light at a wide angle. Therefore, when the first reflecting member 41 is disposed on the optical path of the image light projected from the projection device 3, the reflecting surface 41A of the first reflecting member 41 reflects the image light from the projection device 3 at a wide angle. The reflecting surface 41A corresponds to the first reflecting surface.
As shown in FIG. 1 , which is a side view of the reflection device 4 and the projection device 3 viewed from the +X direction, when the movable part 44 rotates in the +D direction around the rotation axis Rx2 viewed from the +X direction, the first reflection member 41 is disposed on the optical path of the image light projected from the projection device 3.
The image light projected from the first reflecting member 41 is reflected at a wide angle by the first reflecting member 41, so that the image can be projected widely onto, for example, the ceiling surface, side surface, or floor surface of a living room. The posture of the reflecting device 4 at this time is the usage posture. The +D direction is the counterclockwise direction around the rotation axis Rx2 when viewed from the +X direction.
The holding mechanism 42 can change the angle of the movable part 44 with respect to the base 21 to change the projection direction of light by the first reflecting member 41. In other words, the projection direction of light by the first reflecting member 41 can be changed not only by making the movable part 44 parallel to the installation surface 21A of the base 21 when viewed from the +X direction, but also by rotating the movable part 44 so that it is not parallel to the installation surface 21A when viewed from the +X direction, for example.

FIG. 3 shows a first reflecting member 4 disposed at a position outside the projection range of the image light projected from the projection device 3.
3 is a side view of the reflection device 4 in which the projection device 3 and the reflection device 4 in the stored posture are viewed from the +X direction.
As shown in FIG. 3, the movable portion 44 rotates in the −D direction around the rotation axis Rx2 when viewed from the +X direction.
rotates, the first reflecting member 41 is disposed at a position outside the projection range of the image light projected from the projection device 3. The posture of the reflection device 4 at this time is the stored posture. When the posture of the reflection device 4 is the stored posture, the image light projected from the projection device 3 travels in the +Z direction without passing through the first reflecting member 41. In other words, when the posture of the reflection device 4 is the stored posture, the user of the projection device 3 can project the light emitted from the projection device 3 in the +Z direction without passing through the first reflecting member 41. Note that the -D direction is a clockwise direction centered on the rotation axis Rx2 when viewed from the +X direction, and is the opposite direction to the +D direction.

[Adjusting the projection direction using the support device]
FIG. 4 is a perspective view showing the projection system 1A in a state in which the base 21 has been rotated.
As shown in FIG. 4, the projection system 1A is configured to rotate around a rotation axis Rx1 on a base 21.
By rotating the base 21, the projection direction of the image light by the first reflecting member 41 can be adjusted. That is, in the projection system 1A, by rotating the base 21, the projection direction of the image light can be adjusted to any direction desired by the user.
Even when the image light is projected from the projection device 3 without passing through the first reflecting member 41, the image light can be projected in any direction by rotating the base 21.

[Effects of the First Embodiment]
The projection system 1A according to the present embodiment described above provides the following advantages.
The projection system 1A includes a projection device 3, a base 21, a first reflecting member 41, and a holding mechanism 42. The projection device 3 projects light. The projection device 3 is installed on the base 21. The first reflecting member 41 reflects the light projected from the projection device 3 and expands the projection range of the reflected light. The holding mechanism 42 holds the first reflecting member 41. The holding mechanism 42 has a movable part 44 that changes the position of the first reflecting member 41 relative to the projection device 3.

With this configuration, the light projected from the projection device 3 is incident on the first reflecting member 41 and is reflected by the first reflecting member 41 to expand the projection range. This allows the light to be projected over a wide range even if the distance between the projection device 3 and the projection surface such as a wall or screen is short. Therefore, the light projected from the projection device 3 can be easily enlarged.
Furthermore, since the position of the first reflecting member 41 relative to the projection device 3 can be changed by the movable portion 44 of the holding mechanism 42, it is possible to adjust the projection direction of light by the first reflecting member 41. Therefore, it is possible to improve the versatility of the projection system 1A and also to improve the usability of the projection system 1A.

In the projection system 1A, the first reflecting member 41 may reflect incident light over a wide angle.
According to this configuration, the light projected from the projection device 3 can be projected over a wider range by the first reflecting member 41. Therefore, the projection system 1A can be used as a system for producing a spatial effect.

In the projection system 1A, the holding mechanism 42 changes the angle of the movable part 44 with respect to the base 21 to change the projection direction of the light by the first reflecting member 41 .
With this configuration, the direction in which light is projected by the first reflecting member 41 can be easily adjusted.

In the projection system 1A, the holding mechanism 42 has a fixing portion 43 that is fixed to the base 21 .
With this configuration, it is possible to prevent the holding mechanism 42 from falling off when adjusting the position of the first reflecting member 41 relative to the projection device 3 .

The projection system 1A includes a support device 2. The support device 2 has a base 21, and is configured to rotate around a rotation axis Rx1 along the +X direction intersecting with the direction in which light is projected by the projection device 3.
1 is rotatably supported.
According to this configuration, the direction in which light is projected by the first reflecting member 41 can be adjusted as desired by rotating the base 21. This can improve the convenience of the projection system 1A.

The reflection device 4 is used in combination with a projection device 3 that projects light, and reflects the light projected from the projection device 3. The reflection device 4 includes a first reflection member 41 that reflects the light projected from the projection device 3 to expand the projection range of the light, and a holding mechanism 42 that holds the first reflection member 41. The holding mechanism 42 has a movable part 44 that changes the position of the first reflection member 41 with respect to the projection device 3.
According to such a configuration, when used in combination with the projection device 3, it is possible to achieve the same effects as those achieved by the projection system 1A.

[Second embodiment]
Next, a second embodiment of the present disclosure will be described.
The projection system according to this embodiment has a similar configuration to the projection system 1A according to the first embodiment, but differs from the projection system 1A in that the configuration of the reflection device is different. In the following description, parts that are the same or approximately the same as parts already described will be denoted by the same reference numerals and description thereof will be omitted.

[Schematic configuration of projection system]
FIG. 5 is a perspective view showing the projection device 3 and the reflection device 5 that constitute the projection system 1B according to this embodiment.
The projection system 1B according to this embodiment has a reflecting device 4 shown in FIG.
The projection system 1B has the same configuration and functions as the projection system 1A according to the first embodiment, except for the reflection device 5 shown in FIG.
Equipped with.

[Configuration of Reflection Device]
Fig. 6 is a perspective view of the reflecting device 5 as viewed from the +Z direction. Fig. 7 is a perspective view of the reflecting device 5 as viewed from the -Z direction. The posture of the reflecting device 5 shown in Figs. 6 and 7 is one of the postures between the use posture and the storage posture.
Similar to the reflection device 4 according to the first embodiment, when the reflection device 5 is disposed on the optical path of the image light projected from the projection device 3, the reflection device 5 magnifies and reflects the incident image light.
The reflecting device 5 reflects the incident image light at a wide angle. The reflecting device 5 includes a first reflecting member 41,
It includes a second reflecting member 51 and a holding mechanism 52 .
The configuration of the second reflecting member 51 will be described in detail later.

[Configuration of holding mechanism]
The holding mechanism 52 holds the first reflecting member 41 and the second reflecting member 51. The holding mechanism 52 has two fixing portions 53, a frame 54, a first holding portion 55, a second holding portion 56, and two link mechanisms 57.

[Configuration of fixed part]
Similar to the two fixing parts 43 according to the first embodiment, the two fixing parts 53 are fixed to the installation surface 21A of the base 21 at a distance from each other in the +X direction. When the projection device 3 and the reflection device 5 are viewed from the +Z direction, the front surface 313 of the projection device 3 is disposed between the two fixing parts 53.

[Frame composition]
The frame 54 supports the first holding portion 55 and the second holding portion 56, and further supports the first reflecting member 41 and the second reflecting member 51. The frame 54 has a frame main body 541 formed in a flat plate shape, two movable portions 542, two second link connecting portions 543, two third link connecting portions 544, and two rotation support portions 545.

The two movable parts 542 are arms extending in the −Y direction from the end of the frame main body 541 in the +Z direction.
The other movable part 542 is provided at the end of the frame body 541 in the +X direction, and the other movable part 542 is provided at the end of the frame body 541 in the -X direction. The +X direction movable part 542 is supported by the fixed part 53 in the +X direction so as to be rotatable about a rotation axis Rx2, and the -X direction movable part 542 is supported by the fixed part 53 in the -X direction so as to be rotatable about a rotation axis Rx3.
The fixing portion 53 is supported rotatably about a rotation axis Rx2.
As mentioned above, 2 is the rotation axis along the +X direction.

When each movable part 542 rotates about the rotation axis Rx2, the entire holding mechanism 52 except for the fixed part 53 rotates about the rotation axis Rx2. Therefore, each movable part 542 changes the positions of the first reflecting member 41 and the second reflecting member 51 with respect to the projection device 3. That is,
By rotating each movable part 542 relative to the fixed part 53 and adjusting the angle relative to the base 21 on which the projection device 3 is installed, the positions of the first reflection member 41 and the second reflection member 51 relative to the projection device 3 are changed.

The two second link connecting portions 543 and the two third link connecting portions 544 are connected to the frame main body 5
The two second link connecting parts 543 and the two third link connecting parts 544 are provided in the +Z direction of the frame main body 541, at approximately the center in the +X direction, and lined up in the +Y direction. More specifically, the two second link connecting parts 543 and the two third link connecting parts 544 are provided in the +Z direction of the frame main body 541, at a portion bent in the -Y direction from approximately the center in the +X direction.
Of the two second link connection parts 543, the second link connection part 543 in the +X direction has a +X
A second link 572 of the −X direction link mechanism 57 is rotatably connected to the −X direction second link connection portion 543 , and a second link 572 of the −X direction link mechanism 57 is rotatably connected to the −X direction second link connection portion 543 .
The two third link connection parts 544 are provided closer to the frame main body 541 than the corresponding second link connection parts 543. Of the two third link connection parts 544, the third link 573 of the +X direction link mechanism 57 is rotatably connected to the +X direction third link connection part 544, and the third link 573 of the -X direction link mechanism 57 is rotatably connected to the -X direction third link connection part 544.
The two rotation support parts 545 are a first rotation support part 545 that is rotatable around a rotation axis Rx3 along the +X direction.
This is the portion that is connected to the holding portion 55. The two rotation support portions 545 are provided at the end portions of the frame main body 541 in the −Z direction.

[Configuration of first holding portion]
The first holding portion 55 holds the first reflecting member 41. The first holding portion 55 is formed in an L-shape with left and right opposite directions when viewed from the +X direction. The first holding portion 55 includes an arrangement portion 551 and a bent portion 55
2, two connection portions 553 and two first link connecting portions 554.
The first reflecting member 41 is disposed in the disposing portion 551.
1, has a connection surface 551A that is connected to a surface 41B on the opposite side to the reflecting surface 41A. The arrangement portion 551 is formed in a substantially flat plate shape.
The bent portion 552 is a portion bent from the arrangement portion 551 in a direction perpendicular to the connection surface 551A.

The two connection portions 553 are provided at both ends of the bent portion 552 in the +X direction.
The connecting portions 553 are connected to the corresponding pivot support portions 545 of the two pivot support portions 545 of the frame 54. As a result, the first holding portion 55 is rotated +
The first holding portion 55 is rotatable about a rotation axis Rx3 along the X direction.
The connection surface 551A of the placement portion 551 is rotatable in a direction approaching or moving away from the frame 54.
The two first link connecting portions 554 are connected to a surface 552A of the bent portion 552 on the side of the arrangement portion 551.
Of the two first link connection parts 554, the first link connection part 554 in the +X direction is connected to a first link 571 of the link mechanism 57 in the +X direction, and the first link connection part 554 in the -X direction is connected to a first link 572 of the link mechanism 57 in the +X direction.
A first link 571 of the −X direction link mechanism 57 is connected to the link connection portion 554 .

[Configuration of second holding portion]
The second holding portion 56 extends in the +X direction and holds the second reflecting member 51. The second holding portion 56 has a link connection portion 561, a placement portion 565, and a support portion 566.
The link connection part 561 is connected to the link mechanism 57. The link connection part 561 has a first connection part 562, a second connection part 563, and a third connection part 564 provided at an end part in the +X direction and connected to the link mechanism 57 in the +X direction, and the first connection part 562, the second connection part 563, and the third connection part 564 provided at an end part in the -X direction and connected to the link mechanism 57 in the -X direction.
The first connection portion 562 is connected to a first link 571 of the corresponding link mechanism 57 .
The second connection portion 563 is connected to a second link 572 of the link mechanism 57 .
The third connection portion 564 is connected to a third link 573 of the link mechanism 57 .
The first connection portion 562 , the second connection portion 563 and the third connection portion 564 are provided on the same straight line, and the second connection portion 563 is provided between the first connection portion 562 and the third connection portion 564 .

The arrangement portion 565 is provided in a quadrangular shape when viewed from the +Z direction at approximately the center of the second holding portion 56 in the +X direction. The second reflecting member 51 is arranged on the surface of the arrangement portion 565 facing the projection device 3. That is, the arrangement portion 565 has an arrangement surface 5 on which the second reflecting member 51 is arranged.
It has 65A.
The support portion 566 is provided on the second holding portion 56 so as to stand from a surface 565B of the arrangement portion 565 opposite to the arrangement surface 565A. When the reflection device 5 is in a storage position described later, the support portion 566 comes into contact with the first holding portion 55 and supports the first holding portion 55 and the first
The support portion 566 supports the reflecting member 41. That is, the support portion 566 supports the surface 41B of the first reflecting member 41 opposite to the reflecting surface 41A and the surface 51B of the second reflecting member 51 opposite to the reflecting surface 51A.
When the first reflecting member 41 and the second reflecting member 51 are disposed so that the reflecting surface 41A of the first reflecting member 41 is substantially parallel to the frame body 541 and the second holding portion 56, the first holding portion 55 is supported. This prevents the reflecting surface 41A of the first reflecting member 41 from contacting the frame body 541, the second holding portion 56, and the like.

[Link Mechanism Configuration]
The two link mechanisms 57 connect the first holding portion 55 and the second holding portion 56, interlock the first reflecting member 41 held by the first holding portion 55 and the second reflecting member 51 held by the second holding portion 56 with each other, and rotate the first reflecting member 41 and the second reflecting member 51. That is, the link mechanism 57 rotates the second holding portion 56 about a rotation axis along the +X direction in conjunction with the rotation of the first holding portion 55 about the rotation axis Rx3, and moves the first reflecting member 41 and the second reflecting member 51 in a direction in which the ends of the first reflecting member 41 and the second reflecting member 51 in the +Y direction approach or move away from each other.
The link mechanism 57 rotates the first and second reflecting members 41 and 51. That is, the link mechanism 57 rotates the end of the first reflecting member 41 along the +Y direction and the end of the second reflecting member 51 along the +Y direction in a direction in which they approach each other. The +Y direction corresponds to the first direction.

The link mechanism 57 has a first link 571 , a second link 572 and a third link 573 .
The first link 571 connects the first link connecting portion 554 of the first holding portion 55 and the first connecting portion 562 of the second holding portion 56 .
The second link 572 is connected to the second link connecting portion 543 of the frame 54 and the second holding portion 56.
Connect to connection portion 563.
The third link 573 is a third link connecting portion 544 of the frame 54 and a third link connecting portion 545 of the second holding portion 56.
The second link 572 and the third link 573 are connected to the connecting portion 564. Therefore, when viewed from the +X direction, the second link 572 and the third link 573 intersect with each other.
By this link mechanism 57, the second holding part 56 rotates clockwise in response to the rotation of the first holding part 55 counterclockwise about the rotation axis Rx3 when viewed from the +X direction. As a result, the first reflecting member 41 and the second reflecting member 51 rotate in conjunction with each other.

[Configuration of second reflecting member]
The second reflecting member 51 is a total reflection mirror having a flat surface.
The second reflecting member 51 is disposed on the arrangement portion 565, and a surface 51B opposite to the reflecting surface 51A is held by the second holding portion 56. When the second reflecting member 51 is disposed on the optical path of the image light projected from the projection device 3, the second reflecting member 51 reflects the light projected from the projection device 3 toward the first reflecting member 41.
In this embodiment, the second reflecting member 51 is a plane mirror having a flat reflecting surface 51A, but may be a convex mirror that magnifies and reflects incident light. The reflecting surface 51A corresponds to the second reflecting surface.

[Configuration of first reflecting member]
As described above, the first reflecting member 41 reflects the incident light and expands the projection range of the reflected light. The first reflecting member 41 reflects and expands the light incident from the second reflecting member 51. More specifically, the first reflecting member 41 is a convex mirror, and reflects the image light projected from the projection device 3 and incident from the second reflecting member 51 at a wide angle. As described above, the first reflecting member 4
In FIG. 1 , a surface 41 B on the opposite side to the reflecting surface 41 A is disposed in a disposing portion 551 of a first holding portion 55 and is held by the first holding portion 55 .

[Position of reflector in use]
FIG. 8 is a side view of the reflection device 5 and the projection device 3 in the usage position, as viewed from the +X direction.
In the case where the reflecting device 5 is used, that is, the image light projected from the projection device 3 is reflected by the reflecting device 5.
5 and 8, when the light is magnified by the reflection surface 41 of the first reflection member 41,
The second reflecting member 51 is disposed on the optical path of the image light projected from the projection device 3 with the reflecting surface 51A of the second reflecting member 51 facing each other. As a result, the image light projected from the projection device 3 is reflected by the second reflecting member 51 toward the first reflecting member 41, enters the first reflecting member 41, and is reflected at a wide angle by the first reflecting member 41, which is a convex mirror. As a result, the image light can be projected over a wide range onto a wall surface located in the projection direction of the image light by the first reflecting member 41. The posture of the reflection device 5 when the first reflecting member 41 and the second reflecting member 51 are disposed in such a position is called the usage posture.

[Storage of reflector]
9 to 11 show the reflection device 5 and the projection device 3 in the process of shifting from the use position to the storage position.
11 is a side view of the reflecting device 5 as viewed from the +X direction. FIG.
When storing the reflection device 5 in the usage posture shown in FIG. 8, the frame 54 is rotated clockwise (in the +D1 direction) around the rotation axis Rx2 when viewed from the +X direction.
Even during rotation of the first reflecting member 41, the reflecting surface 41A of the first reflecting member 41 and the reflecting surface 51A of the second reflecting member 51 are maintained in an opposing state.
When the frame 54 is further rotated in the +D1 direction, the frame main body 541 is positioned to cover the top surface 311, and the frame main body 541 and the top surface 311 become approximately parallel to each other. At this time, the movable part 542 reaches its rotation limit in the +D1 direction, so that further rotation of the frame 54 in the +D1 direction is restricted.
In this manner, by rotating the movable part 542 with respect to the base 21, the movable part 54
2, a second reflecting member 51 can be disposed at a position outside the projection range of the light projected from the projection device 3.

From the state shown in FIG. 9, when viewed from the +X direction, the rotation axis Rx3 is rotated counterclockwise (−D
When the first holding portion 55 and the first reflecting member 41 are rotated in the two directions, as shown in FIG.
The bent portion 552 moves in the -Z direction. As a result, the first link 571 connected to the first link connecting portion 554 provided at the bent portion 552 moves in the -Z direction. As a result, the second holding portion 56 and the second reflecting member 51 rotate clockwise (in the +D3 direction) when viewed from the +X direction.
When the first holding portion 55 and the second holding portion 56 are further rotated, the first reflecting member 41 and the second reflecting member 51 are arranged so as to overlap in the +Y direction, as shown in Fig. 11. More specifically, the first reflecting member 41 is arranged in the +Y direction relative to the second reflecting member 51. In this state, the surface 41B of the first reflecting member 41 opposite the reflecting surface 41A and the surface 51B of the second reflecting member 51 opposite the reflecting surface 51A are approximately parallel to each other. Then, the support portion 566 of the second holding portion 56 contacts the connection surface 551A of the first holding portion 55 that faces the first reflecting member 41, thereby supporting the first holding portion 55 and the first reflecting member 41.
In this manner, by setting the reflection device 5 in the stored position, the reflection device 5 can be arranged compactly when not in use.

[Use of reflectors]
When the reflector 5 is used, the above procedure is carried out in reverse.
First, in the reflection device 5 in the stored posture shown in FIG. 11, the rotation axis Rx3 as viewed from the +X direction
10, the first holding portion 55 and the first reflecting member 41 are rotated clockwise (in the +D2 direction) around the center of the rotation of the first holding portion 55. As a result, as shown in FIG. 10, the first link 571 moves in the +Z direction, and in conjunction with the rotation of the first holding portion 55 in the +D2 direction, the second holding portion 56 and the second reflecting member 51 are rotated counterclockwise (in the -D3 direction) as viewed from the +X direction.

When the first holding portion 55 and the first reflecting member 41 are further rotated in the +D2 direction, as shown in FIG. 9, the first holding portion 55 and the first reflecting member 41 are disposed so as to be aligned along the XY plane.
From the state shown in FIG. 9, the rotation is performed in a counterclockwise direction (−D
1 direction) to place a second projection 51 on the optical path of the image light projected from the projection device 3.
When the reflecting member 51 is placed, the reflecting device 5 is in the use position as shown in Fig. 8. This allows the reflecting device 5 to magnify the image light.

As described above, the rotation of the frame 54 around the rotation axis Rx2 in the movable part 542 is independent of the interlocking of the first reflecting member 41 and the second reflecting member 51 by the link mechanism 57. For this reason, the movable part 542 rotates relative to the fixed part 53 and further to the base 21 to which the fixed part 53 is fixed, while maintaining the state in which the reflecting surface 41A and the reflecting surface 51A face each other.
This allows the direction in which light is projected by the first reflecting member 41 to be adjusted.
The frame 54 is provided with the second reflecting member 51 on the optical path of the image light projected from the projection device 3.
is arranged in the range in which the first reflecting member 41 is projected. Therefore, the projection direction of the image light by the first reflecting member 41 can be adjusted.

[Combination with support device]
FIG. 12 is a side view of the projection system 1B when projecting image light mainly onto the ceiling surface, as viewed from the -X direction.
The projection device 3 and the reflection device 5 are fixed to a mounting surface 21A of a base 21 constituting the support device 2. For example, in the reflection device 5, two fixing parts 53 are fixed to the mounting surface 21A.
In the projection system 1B as well, the projection direction of the image light by the reflection device 5 or the projection direction of the image light by the projection device 3 can be adjusted by rotating the base 21 about the rotation axis Rx1 (see FIG. 1). For example, as shown in FIG. 12, by rotating the base 21 so that the installation surface 21A faces downward, the image light projected from the projection device 3 can be reflected downward by the second reflection member 51 and projected upward and to the side by the first reflection member 41. In this way, by rotating the base 21, an image can be projected at any position of the user's choice, and the versatility of the projection system 1B can be improved.

[Effects of the second embodiment]
The projection system 1B according to this embodiment described above can achieve the same effects as the projection system 1A according to the first embodiment, and also achieves the following effects.
The projection system 1B includes a second reflecting member 51 that reflects the light projected from the projection device 3 toward the first reflecting member 41. A reflecting surface 41A of the first reflecting member 41 faces a reflecting surface 51A of the second reflecting member 51. The holding mechanism 52 holds the second reflecting member 51.
Here, when the light incident from the projection device 3 is reflected and expanded only by the first reflecting member 41, in order to project the light over a wider range, it is necessary to increase the distance between the first reflecting member 41 and the projection device 3. In addition, since the image light reflected by the first reflecting member 41 is, for example, reversed left to right, it is necessary to configure the projection device 3 to project the image light that is reversed left to right.
In contrast, by making the light projected from the projection device 3 incident on the first reflecting member 41 via the second reflecting member 51, the distance from the projection device 3 to the first reflecting member 41 can be increased with a compact configuration. Therefore, the projection system 1B can be made smaller. In addition, by providing the second reflecting member 51, it is not necessary for the projection device 3 to project image light with the left and right reversed.

In the projection system 1B, the movable portion 542 adjusts the direction in which light is projected by the first reflecting member 41 by rotating while maintaining the state in which the reflecting surface 41A and the reflecting surface 51A face each other.
With this configuration, even when the movable portion 542 is rotated to adjust the projection direction of light by the first reflecting member 41, the reflecting surface 41A and the reflecting surface 51A are maintained in an opposing state, so that the light projected from the projection device 3 via the second reflecting member 51 can be made incident on the first reflecting member 41. This makes it possible to improve the reliability of the projection system 1B.

In the projection system 1B, the holding mechanism 52 has a link mechanism 57 that links the first reflecting member 41 and the second reflecting member 51 to each other. The link mechanism 57 rotates the end of the first reflecting member 41 along the +Y direction and the end of the second reflecting member 51 along the +Y direction in a direction in which they approach each other. The +Y direction corresponds to the first direction.
According to this configuration, when the first reflecting member 41 is not used to expand light, and the reflecting device 5 is stored in a position in which the surface 41B of the first reflecting member 41 opposite the reflecting surface 41A and the surface 51B of the second reflecting member 51 opposite the reflecting surface 51A are substantially parallel, the first reflecting member 41 can be rotated to rotate the second reflecting member 51 in conjunction with the first reflecting member 41. Therefore, the first reflecting member 41 and the second reflecting member 51 can be easily stored.

In the projection system 1B, the holding mechanism 52 includes a first holding portion 55 that holds the first reflecting member 41.
and a second holding portion 56 that holds the second reflecting member 51. The second holding portion 56 has
When the first reflecting member 41 and the second reflecting member 51 are positioned so that the surface 41B opposite the reflecting surface 41A of the reflecting member 41 and the surface 51B opposite the reflecting surface 51A of the second reflecting member 51 are approximately parallel, the first reflecting member 41 has a support portion 566 that supports the first holding portion 55.
According to this configuration, when the first reflecting member 41 and the second reflecting member 51 are disposed as described above, even if a part of the first reflecting member 41 and a part of the second reflecting member 51 overlap with each other,
This can prevent the reflection surface 41A from coming into contact with other members such as the second holding portion 56. This can protect the reflection surface 41A.

In the projection system 1B, the movable portion 542 can position the second reflecting member 51 at a position outside the projection range of the light projected from the projection device 3.
With this configuration, the light projected from the projection device 3 can be directly projected onto a projection surface such as a screen without passing through the first reflecting member 41 and the second reflecting member 51. That is, the projection system 1B can be used in both cases where light is projected through the first reflecting member 41 and where light is projected without passing through the first reflecting member 41. This can increase the versatility of the projection system 1B.

[Modifications of the embodiment]
The present disclosure is not limited to the above-described embodiments, and modifications and improvements within the scope that can achieve the object of the present disclosure are included in the present disclosure.
In each of the above-described embodiments, the first reflecting member 41 is a convex mirror that reflects incident light at a wide angle. However, the present disclosure is not limited to this, and the first reflecting member employed in the reflecting device of the present disclosure may be a flat mirror.
In addition, the holding mechanisms 42 and 52 are rotatable by the movable parts 44 and 542 with respect to the fixed parts 43 and 53 fixed to the base 21.
may be configured to be slidable relative to the base 21 at the movable portion, and may be configured to change the positions of the first reflecting member 41 and the second reflecting member 51 relative to the projection device 3.

In each of the above-described embodiments, the movable parts 44, 542 change the position of the first reflecting member 41 relative to the projection device 3. However, this is not limiting, and the first reflecting member 41 and the second reflecting member 51 may be configured to be rotatable around a rotation axis along the +X direction, for example, to adjust the positions of the first reflecting member 41 and the second reflecting member 51 relative to the projection device 3.

In the second embodiment, the first reflecting member 41 and the second reflecting member 51 are held by the holding mechanism 52. However, this is not limited thereto, and the holding mechanism that holds the first reflecting member 41 and the holding mechanism that holds the second reflecting member 51 may be separate bodies.

In the second embodiment, the movable portion 44, 542 is configured to be rotatable while maintaining the state in which the reflective surface 41A and the reflective surface 51A face each other, thereby making it possible to adjust the projection direction of light by the first reflecting member 41. However, this is not limiting, and the state in which the reflective surface 41A and the reflective surface 51A face each other does not have to be maintained when the movable portion 44, 542 is rotated.

In the second embodiment, the holding mechanism 52 has the link mechanism 57 that links the rotation of the first holding portion 55 and the first reflecting member 41 with the rotation of the second holding portion 56 and the second reflecting member 51. However, this is not limited to the above, and the holding mechanism 52 does not need to include the link mechanism 57. In other words, the rotation of the first reflecting member 41 and the rotation of the second reflecting member 51 may be performed independently of each other.

In the second embodiment, the holding mechanism 52 has the support portion 566 that supports the first holding portion 55 when the reflection device 5 is in the stored position. However, this is not limiting, and the support portion 566 may be omitted. In addition, the support portion 566 may come into contact with the first reflection member 41 and
The first reflecting member 41 may be supported. In this case, the support portion 566 of the first reflecting member 41
The portion in contact with the reflecting surface 41A may be a portion on which light is not incident.

In the second embodiment described above, when the movable portion 542 is rotated, the second reflecting member 51 can be disposed at a position outside the projection range of the image light projected from the projection device 3. However, the present invention is not limited to this, and a configuration may be adopted in which at least a part of the second reflecting member 51 is always disposed within the projection range of the image light projected from the projection device 3.

In the above-described embodiments, the fixing parts 43 and 53 are fixed to the base 21. However, this is not limiting, and the fixing parts 43 and 53 may be fixed to the projection device 3. In this case,
The fixed portions 43 and 53 may be fixed to the exterior housing 31 of the projection device 3 .

In the above embodiments, the projection systems 1A and 1B include a support device 2 having a base 21 on which the projection device 3 and the reflection devices 4 and 5 are installed. The support device 2 supports the base 21 to be rotatable about a rotation axis Rx1 along the +X direction perpendicular to the light projection direction by the projection device 3. However, this is not limited to the above, and the base 21 does not have to be supported to be rotatable. Furthermore, the rotation axis Rx1 of the base 21 may be along the +Y direction perpendicular to the +Z direction, which is the light projection direction by the projection device 3. In other words, the rotation axis Rx
1 may intersect with the direction in which light is projected by the projection device 3 .

In each of the above embodiments, the projection device 3 projects image light in the +Z direction, which is the direction from the back surface 314 toward the front surface 313 of the exterior housing 31. However, this is not limited to the above, and the projection device 3 may project image light in the +Z direction and +Y direction from the top surface 311, for example. Even in this case, it is sufficient that the first reflecting member 41 or the second reflecting member 51 is disposed on the optical path of the image light projected from the projection device 3.

In each of the above embodiments, the projection device 3 includes three light modulation devices 373B, 373G, and 373R.
However, the present disclosure is not limited to this, and a projection device including two or less light modulation devices, or four or more light modulation devices, may be adopted in the projection system of the present disclosure.
In each of the above embodiments, the image generating device 32 has optical components arranged according to the layout shown in Fig. 2. However, the image generating device 32 is not limited to this, and may have optical components arranged according to another layout, or may include optical components other than the optical components shown in Fig. 2.
Furthermore, the projection device 3 is not limited to a device that projects image light, and may be a device that projects light such as illumination light, etc. In other words, the projection device 3 may be a lighting device.

In the above embodiment, the light modulation device 373 has a transmissive liquid crystal panel with different light incident and light exit surfaces. However, the present invention is not limited to this, and the light modulation device 373 may have a reflective liquid crystal panel with the same light incident and light exit surfaces. In addition, as long as the light modulation device is capable of modulating the incident light beam to form an image according to image information, a device using a micromirror, for example, a device using a DMD (Digital Micromirror Device) or the like, other than a liquid crystal light modulation device, may be used.

[Summary of the Disclosure]
The following is a summary of this disclosure.
A projection system according to a first aspect of the present disclosure includes a projection device that projects light, a base on which the projection device is mounted, a first reflecting member that reflects the light projected from the projection device to expand the projection range of the light, and a holding mechanism that holds the first reflecting member, the holding mechanism having a movable part that changes the position of the first reflecting member relative to the projection device.
With this configuration, the light projected from the projection device is incident on the first reflecting member and is reflected by the first reflecting member to expand the projection range. This allows the light to be projected over a wide range even if the distance between the projection device and the projection surface such as a wall or a screen is short. Therefore, the light projected from the projection device can be easily enlarged.
In addition, since the position of the first reflecting member relative to the projection device can be changed by the movable part of the holding mechanism, the projection direction of the light by the first reflecting member can be adjusted, thereby improving the versatility of the projection system and the ease of use of the projection system.

In the projection system according to the first aspect described above, the first reflecting member may reflect incident light over a wide angle.
According to this configuration, the first reflecting member allows the light projected from the projection device to be projected over a wider range, and therefore the projection system according to the first aspect can be used as a system for producing a spatial effect.

In the projection system according to the first aspect described above, the holding mechanism may change a projection direction of the light by the first reflecting member by changing an angle of the movable part with respect to the base.
According to this configuration, the direction in which light is projected by the first reflecting member can be easily adjusted.

In the projection system according to the first aspect, a second reflecting member is provided that reflects the light projected from the projection device toward the first reflecting member, and a first reflecting surface of the first reflecting member is disposed on the second reflecting member.
The holding mechanism may be configured to face a second reflecting surface of the reflecting member and hold the second reflecting member.
Here, when the light projected from the projection device is reflected and expanded only by the first reflecting member, in order to project the light over a wider range, it is necessary to increase the distance between the first reflecting member and the projection device. Also, when the projection device projects image light, the light reflected by the first reflecting member is, for example, reversed left and right, so it is necessary to configure the projection device to project the image light that is reversed left and right.
In contrast, by making the light projected from the projection device incident on the first reflecting member via the second reflecting member, the distance from the projection device to the first reflecting member can be increased with a compact configuration, thereby making it possible to miniaturize the projection system.
Furthermore, even when the projection device projects image light, by providing the second reflecting member, the projection device does not need to project image light that is left-right inverted.

In the projection system according to the first aspect described above, the movable portion may adjust the projection direction of light by the first reflecting member by rotating while maintaining the first reflecting surface and the second reflecting surface facing each other.
With this configuration, even when the movable part is rotated to adjust the projection direction of the light by the first reflecting member, the first reflecting surface and the second reflecting surface are maintained in an opposing state, so that the light projected from the projection device can be made incident on the first reflecting member via the second reflecting member, thereby improving the reliability of the projection system.

In the projection system of the first aspect described above, the holding mechanism may have a link mechanism that links the first reflecting member and the second reflecting member to each other, and the link mechanism may rotate an end of the first reflecting member along a first direction and an end of the second reflecting member along the first direction in a direction in which they approach each other.
According to this configuration, when the first reflecting member does not magnify light, and when the first reflecting member and the second reflecting member are arranged so that the surface of the first reflecting member opposite the reflecting surface and the surface of the second reflecting member opposite the reflecting surface are substantially parallel, by rotating one of the first reflecting member and the second reflecting member, the other reflecting member can be rotated in conjunction with the first reflecting member. Therefore, the first reflecting member and the second reflecting member can be easily stored.

In the projection system according to the first aspect described above, the holding mechanism includes a first holding portion that holds the first reflecting member and a second holding portion that holds the second reflecting member, and the second holding portion is
The first reflecting member and the second reflecting member may have a support portion that supports the first holding portion when the first reflecting member and the second reflecting member are arranged so that the surface opposite the first reflecting surface and the surface opposite the second reflecting surface are approximately parallel to each other.
According to this configuration, when the first and second reflecting members are arranged as described above, even if a part of the first reflecting member overlaps with a part of the second reflecting member, it is possible to prevent the reflecting surface of the first reflecting member from contacting other members such as the second holding portion, and therefore it is possible to protect the reflecting surface of the first reflecting member.

In the projection system according to the first aspect described above, the movable portion may be capable of disposing the second reflecting member at a position outside the projection range of the light projected from the projection device.
According to this configuration, the light projected from the projection device can be directly projected onto a projection surface such as a screen without passing through the first and second reflecting members. In other words, the projection system can be used in both cases where the light is projected through the first reflecting member and where the light is projected without passing through the first reflecting member. This increases the versatility of the projection system.

In the projection system according to the first aspect, the holding mechanism may have a fixed portion that is fixed to one of the base and the projection device.
According to this configuration, the holding mechanism can be fixed to the base or the projection device, so that it is possible to prevent the holding mechanism from falling off when adjusting the position of the first reflecting member relative to the projection device.

The projection system according to the first aspect may further include a support device that has the base and supports the base rotatably about an axis that intersects with a direction in which light is projected by the projection device.
According to this configuration, the direction in which light is projected by the first reflecting member can be adjusted as desired by rotating the base, thereby improving the convenience of the projection system.

A reflection device according to a second aspect of the present disclosure is used in combination with a projection device that projects light, and reflects the light projected from the projection device, and includes a first reflection member that reflects the light projected from the projection device to expand the projection range of the light, and a holding mechanism that holds the first reflection member, the holding mechanism having a movable part that changes the position of the first reflection member relative to the projection device.
According to such a configuration, by being used in combination with a projection device, it is possible to achieve the same effects as the projection system according to the first aspect.

1A, 1B... projection system, 2... support device, 21... base, 22... pedestal portion, 23... support, 3... projection device, 31... exterior housing, 311... top surface, 312... bottom surface, 313... front surface, 314
...Back surface, 315...Right side surface, 316...Left side surface, 39...Projection optical device, 4, 5...Reflection device, 4
1...first reflecting member, 41A...reflecting surface (first reflecting surface), 41B...surface, 42...holding mechanism, 43
...fixed part, 44...movable part, 45...holding part, 51...second reflecting member, 51A...reflecting surface (second reflecting surface), 51B...surface, 52...holding mechanism, 53...fixed part, 54...frame, 542...movable part, 55...first holding part, 56...second holding part, 566...support part, 57...link mechanism.

Claims (9)

A projection device that projects light;
a base on which the projection device is mounted;
a first reflecting member that reflects the light projected from the projection device to expand a projection range of the light;
a second reflecting member that reflects the light projected from the projection device toward the first reflecting member;
a holding mechanism for holding the first reflecting member and the second reflecting member ,
The holding mechanism includes:
a movable portion that changes a position of the first reflecting member with respect to the projection device;
a link mechanism for linking the first reflecting member and the second reflecting member with each other,
The link mechanism is configured to connect an end of the first reflecting member along a first direction and an end of the first reflecting member along the first direction.
and an end of a second reflecting member, the end of the first reflecting member being rotated in a direction in which the end of the first reflecting member approaches the end of the second reflecting member. 2. The projection system of claim 1,
The first reflecting member reflects incident light at a wide angle. 3. The projection system according to claim 1,
A projection system, characterized in that the holding mechanism changes the direction in which light is projected by the first reflecting member by changing the angle of the movable part relative to the base. 4. The projection system according to claim 1 ,
a first reflecting surface of the first reflecting member facing a second reflecting surface of the second reflecting member;
A projection system, characterized in that the movable portion adjusts the projection direction of light by the first reflecting member by rotating while maintaining the first reflecting surface and the second reflecting surface facing each other. 4. The projection system according to claim 1 ,
a first reflecting surface of the first reflecting member facing a second reflecting surface of the second reflecting member;
The holding mechanism includes:
A first holding portion that holds the first reflecting member;
A second holding portion that holds the second reflecting member,
A projection system characterized in that the second holding portion has a support portion that supports the first holding portion when the first reflecting member and the second reflecting member are positioned so that the surface opposite the first reflecting surface and the surface opposite the second reflecting surface are approximately parallel. 6. The projection system according to claim 1 ,
A projection system, wherein the movable portion is capable of disposing the second reflecting member at a position outside the projection range of the light projected from the projection device. 7. The projection system according to claim 1,
The projection system, wherein the holding mechanism has a fixed portion that is fixed to one of the base and the projection device. 8. The projection system according to claim 1 ,
A projection system comprising: a support device having the base, the support device supporting the base rotatably about an axis intersecting a direction in which light is projected by the projection device. A reflecting device that is used in combination with a projection device that projects light and reflects the light projected from the projection device,
a first reflecting member that reflects the light projected from the projection device to expand a projection range of the light;
a second reflecting member that reflects the light projected from the projection device toward the first reflecting member;
a holding mechanism for holding the first reflecting member and the second reflecting member ,
The holding mechanism includes:
a movable portion that changes a position of the first reflecting member with respect to the projection device;
a link mechanism for linking the first reflecting member and the second reflecting member with each other,
The link mechanism is configured to connect an end of the first reflecting member along a first direction and an end of the first reflecting member along the first direction.
A reflecting device characterized in that an end of a first reflecting member and an end of a second reflecting member are rotated in a direction in which they approach each other .

Images