JPS5854376B2 - Ritsutaisha Shinsatsueiyo Camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention forms a projection image consisting of an inverted 3D image on a photosensitive material by photographing, and the image original plate consisting of the obtained inverted 3D image is printed by performing a printing operation based on this image. In order to implement a new 3D photography method that obtains 3D photographs by reversing the inverted 3D image when creating a 3D image, we need to produce a camera that is less expensive, lightweight, and used as equipment for the photography.
Moreover, the aim is to provide a camera that is easy to carry.

Before explaining the features of the camera of the present invention, we will first discuss a direct-view stereoscopic photograph and its photographing method as a premise.

Conventionally, the most common stereoscopic photographing device uses two cameras installed in parallel or a camera with two lenses to simultaneously photograph the same subject image with a predetermined parallax. After obtaining left and right images separately, the right image is collected with the right eye and the left image is collected with the left eye, which is usually called stereo photography.

Such stereoscopic photography requires two cameras to take pictures at the same time, or one camera with two lenses and shutters, and the resulting image requires that the left and right eyes are different from each other. An observation device (viewer) was needed that could reliably view the left and right images individually.

On the other hand, in direct-viewing stereoscopic photography, an optical element called a lenticular screen, which has many rows of light-reflecting sections with semi-cylindrical lenses with extremely small diameters, for example, 0.1 mm to 2 mm, is used on the photosensitive surface. It is placed in the front and forms striped images of the same subject viewed from multiple angles.
This is intended to be visually viewed stereoscopically through a lenticular screen with the same optical configuration.

For this reason, Husband's stereoscopic photographs are clearly distinguishable both in terms of the optical means used to obtain them and the way they are viewed.

In direct-view 3D photography, which is based on the premise of forming multiple images from different viewpoints onto a single photosensitive material, a single lens is used to capture images, and as a result, the subject is The image is projected with inverse images on the left and right and on the top and bottom, and is exposed to light to form an image, and the photosensitive surface is divided into individual lenticular elements by a lenticular screen placed just in front of the image forming surface. Inside, the left and right images are similarly arranged with opposite images.

However, in the photosensitive image obtained in this way, which consists of an inverted image arrangement, when observed, the image corresponding to the left side of the subject passes through the lenticular lens and meets the right eye, and conversely, the image corresponding to the right side of the subject appears. Since the corresponding image will be seen through the lenticular lens to the left eye and Kashiwazaki, stereoscopic viewing will not be possible at this time.

This is usually called an inverted stereoscopic image, and when it is created with a single lens and a single exposure, it does not become an observed image as a stereoscopic photograph.

For this purpose, the present inventor used the method disclosed in the application specification of Patent Application No. 37644 of 1975 to start the printing process by using the photosensitive material having the image of the inverted pot body as an original plate. We proposed a method and device for inverting the inverted pot body when obtaining prints and creating a reliable three-dimensional image through a lenticular screen.

The details will be explained in the content of the patent application mentioned above, and in this specification, we will only explain the outline so that understanding of the present invention can be understood. This paper attempts to make new and useful proposals regarding the camera itself.

Therefore, the first object of the present invention is to propose a camera that is effective for obtaining stereoscopic photographs using the above-mentioned method, which has many advantages, and the first object is to make it possible to obtain stereoscopic photographs at a lower cost. It has two purposes, and is intended to help promote the spread of stereoscopic photography.

Further objects of the invention will be self-evident from the detailed description provided below.

In the camera of the present invention, the above-mentioned lenticular screen is provided in close contact immediately in front of the photosensitive material to be loaded, and this lenticular screen also protects the photosensitive material during exposure and other parts of the camera body. It also occupies a completely fixed position.

The camera of the present invention is also characterized in that when the inverted pot body is imaged and exposed to the photosensitive material through the lenticular screen, the process is completed with just one exposure. It will be done.

A generally known method for obtaining this type of stereoscopic photograph is to place a lenticular screen directly in front of the photosensitive material, and to direct the optical axis in the radial direction of the subject. Images of the circumferential surface of the subject are taken sequentially with multiple exposures while displacing the S camera position on the circumference, or when the subject itself can be rotated, the subject is rotated and its orientation is It is known that a stereoscopic image can be obtained by performing multiple exposures by changing the exposure every moment.

However, in any case, these methods are said to be unable to obtain an image suitable for the purpose with a single exposure, so they cannot be used when the subject is a moving object or when a flash of light is used. It was abandoned as being unsuitable for filming.

In the camera of the present invention, the formation of an orthogonal three-dimensional image by reversing the inverted pot body, which is unavoidable for image arrangement due to exposure to light, takes advantage of the fact that it is based on the premise that printing is performed during work. It has been applied effectively, taking into consideration the unique characteristics of the method.

Figure 1 shows the image formation state when photographed by the camera of the present invention for easy understanding. In the figure, X indicates the position of the subject, Lo is the lens for photographing it, and So is behind the subject. This is a shutter that opens and closes in a plane perpendicular to the optical axis.

It is absolutely not necessary to place the shutter So behind the lens LO as shown in the figure; on the contrary, it is not necessary to place the shutter So behind the lens LO, as in the case of a 5K assembled dark box camera, it is necessary to place the shutter So in front of the lens, such as the Solenton shutter that is attached to the front of the lens LO. May be equipped.

The details will be described in the description of FIGS. 3 to 5 together with the details of the lens LO.

Furthermore, in FIG. 1, MO is photosensitive material F.

A lenticular screen is shown that is immovably placed in close contact with the screen immediately in front of the screen.

Therefore, the lens LO in the camera of the present invention is actually required to have a lens transparent section separated by planes parallel to each other that cross the direction of the knitting section formed by the rows and connections of the individual lenticular lens elements of the lenticular screen. .

Therefore, these mutually parallel planes are preferably parallel planes equidistant from each other about the lens principal optical axis, in order to maintain good photographic image quality.

Therefore, the lens LO is a long and thin rectangular lens that is formed by dividing circular lenses by mutually parallel planes that cross the knitted part of the lenticular screen. It may be a lens.

As will be understood from the explanation below, in this case, a lens with a larger diameter can provide a larger parallax for viewing the subject at both its left and right ends, and more inverted three-dimensional images can be obtained for each lenticular lens element. This is preferable because the three-dimensional effect is emphasized.

Therefore, rather than using a circular lens with a large diameter, it is more effective to use a lens with a larger diameter, such as the one shown in FIG. 6, for example.

On the other hand, in the present invention, the details of the shutter So are
As will be described in the explanation related to FIG. 5, the lens L opens in the direction of the above-mentioned mutually parallel planes with the main optical axis as the center,
When closed, a shutter of a type that closes toward the main optical axis (hereinafter referred to as a gap shutter) is used.

The light that passes through the lens LO and the opening of the shutter So that is left open reaches the lenticular screen Mo, and then passes through this and reaches the surface of the photosensitive material FO, where the light is refracted by the lenticular screen MO.

Regarding image formation in this case, regarding the light in the portion between the objects PQ, the light that enters the lens LO from the point P is the lens L.

It is within the light flux θ1 that encompasses the effective aperture of lens L from point Q.

The light incident on is a luminous flux θ that encompasses the effective aperture of the lens Lo.
It is within 2.

As far as we consider only the light that passes through the element m2 in the lenticular elements ml, m2゜m3, which are in contact with each other in many rows, and forms an image, the light in these light fluxes is The light transmitted through the center of the respective lenses Lo is the photosensitive material F.

The image is formed at points P2 and Q2 on the photosensitive surface of .

In order to show these imaging optical systems, the optical path is shown by a solid line in FIG.

However, out of the light beam θ1, the lenticular element m2
The light from point P (the optical path is shown by a dashed line) that does not enter the lenticular element m1 next to it is refracted by the same element m1, and is reflected at 210 on the photosensitive surface of the photosensitive material FO.
On the other hand, the light of the luminous flux θ2 does not enter the lenticular element m2, but instead enters the adjacent lenticular element m3.
The light incident from point Q (the optical path is similarly shown by a dashed line) is refracted by the same element m3 and is imaged at point Q3 on the photosensitive surface of the photosensitive material FO.

In the figure, the size of the lenticular element is shown in a large size for convenience of explanation, so all the light between the subject PQ passes through only the lenticular element m2 and the lenticular elements m1 and m3 located on both sides of it. It is easy to think that the image is formed by
As mentioned above, the width of one element is as small as 0.1 mm to 2 mm, so the projection image between the object PQ is formed by a large number of lenticular elements successively connected to the lenticular element m2 on both sides, with the lenticular element m2 as the center. The light also enters the inside, and a large number of images of points P and Q are obtained by each element.

A large number of projected images produced by minute lenticular elements forms the principle of constructing a direct-view stereoscopic photograph.

Therefore, for a lenticular screen in which many rows of semi-cylindrical lenses with a constant diameter are in contact, the larger the lens has a larger effective aperture diameter, the larger the luminous flux 01 or θ2 becomes, which is reflected behind the lenticular screen. The number of images of point P and point Q increases, and stereoscopic vision is facilitated.

In this case, the projection images formed by each of these many lenticular elements are left and right inverted images, so stereoscopic viewing cannot be achieved directly.

Looking again at the state of the image formed within the lenticular element m2, the images on each surface B, B-1, and B0 of the three-dimensional object Bo located between PQ are the images of the photosensitive material F.
Images B', B', B- are formed on the photosensitive surface of the photosensitive surface in the order of B'10, B', and B-.

That is, the image of plane B0 is formed near the image point Q2, and the image of plane B- is formed near the image point P2, and similarly, the image of the plane B- is formed at a position close to the image point P2, and similarly, the image between the LPs formed in the adjacent lenticular element m1 is Regarding the subject AO, and also regarding the subject Co between the QRs imaged in the adjacent lenticular element m3 on the opposite side, the same result as the image arrangement for the subject BO is produced for the subjects AO and Co, respectively.

This image arrangement is the same as the arrangement of the surfaces of the subject itself, so it is easy to misunderstand that such photosensitive images provide correct stereoscopic vision, but in reality they are semi-cylindrical. When viewing an image through a lenticular with a cross-section of

That is, in the case of an image obtained through a lenticular having a semi-cylindrical cross section, the left side surface B- of the object BO is formed on the left side as a left image B'-, and the right side surface B0 of the object BO is formed on the left side as a left image B'-. Since it is formed as the right image B'+, the left image B'-
passes through the semi-cylindrical lenticular lens to the right eye of the direct viewer, and the right image B′- is linked to the left eye, so that the right eye sees the enlarged image of the left image B′- and the left eye Right image B
This is because the enlarged images of '10' will be seen through the lenticular respectively, and this relationship also occurs for the subject AO and the subject Co, and therefore the photosensitive surface of the photosensitive material Fo obtained by the above photographing. The statue above will form an inverted pot shape.

The image on the photosensitive material FO obtained from the photographing means as described above is subjected to image inversion through a process as shown in the second diagram.

The process of inverting the inverted pot body obtained by the above photography will be explained below with reference to Fig. 2.In this process, the process of inverting the inverted pot body obtained by the above photographing process will be explained as follows. This is what we do.

According to the present invention, since the same three-dimensional photograph is repeatedly obtained by printing a large number of sheets, it is natural that the original plate of the inverted pot body obtained by the above-mentioned photographing process may be a monochromatic photograph or a color photograph. In any case, it is preferable to use the negative in each case.

In the figure, SL is a spotlight as a light source used for printing, and it is projected with an inverted bowl body shown in Figure 1 into the range of the light beam condensed and projected by the projection lens. An original F'o having an image is placed thereon, and a lenticular screen M having the same optical configuration as the lenticular screen MO shown in the first diagram is placed above it.

Below the lenticular screen M, an unexposed photosensitive material F that has been printed with a regular three-dimensional image is inserted in close contact with the lenticular screen.

The apparatus shown in the second figure containing the photosensitive material F is placed in complete darkness.
Of course, it must be placed in a non-photosensitive environment under a new photosensitive material.

In an apparatus constructed of such an arrangement, the original plate F'o and the photosensitive material F are exposed to the stripes formed on the mutually tangent portions of the semi-cylindrical lenses of the lenticular screen M under illumination of the spotlight SL. By relatively moving in a direction orthogonal to the direction of the object, the inverted pot body can be easily reversed and an erect 3D image that can be viewed in 3D can be exposed and printed.

The details regarding this point will be described below. When light is projected toward the lenticular screen M by the four focused beams from the spotlight SL, the light transmitted through the screen M by each lenticular element of the lenticular screen M is , each element converges on a line parallel to the direction of the knitted portion.

As a result, each line film light converged into a line passes through the original plate F′O and enters the photosensitive material F directly below the line film light, and at that time, the original plate F
Exposure is performed according to the projected image of 'o.

In this case, the original F'O and the photosensitive material F move relative to each other, and as a result, they are sequentially exposed to each line of light to obtain a desired object.

That is, although the projected image is formed on the original plate F6 using an inverted pot body, it will be clear from the following explanation that the image is inverted and turned into an orthogonal three-dimensional image.

Photosensitive material F shown in FIG.

Objects AO and BO7co formed on the photosensitive surface of
To describe the projected images of each surface again, the original plate F'o has a right image C'0 and a center image C' of the subject C6 from the left to the right for each lenticular element unit.
, left image C'-1 subject B.

The right image B'10, the center image B', the left image B'-1, the right image A'10, the center image A', and the left image A'- of the subject Ao are arranged in this order.

Therefore, in order to make the explanation easier to understand, let us assume that the photosensitive material F for these images is exposed in a three-step process for a total of three images, each central image and left and right images. In the first exposure process shown by ■ in the figure, three linear film lights emitted from the spotlight SL are applied to the left images C'-, B'- and A'-, respectively.
Each image is exposed to the photosensitive material F in order to produce a positive image from a negative image.

Next, the original plate Fb and the light-sensitive material F are moved in opposite directions to the relative positions shown by ■ in Figure 2, and the spot light is again used.
When three line lights are applied by the SL projection, three central images C, B', and A' are printed on the light-sensitive material F.

Following the second process indicated by ■ above, in the third process, each right image C'+ is '10 and A'10 are printed onto the light-sensitive material F.

As a result, left images C'-1 of the object CO are sequentially displayed from the left side on the photosensitive material F that has gone through the processes from the first process to the third process, while the relative positional relationship between the left and right of the entire object is maintained. The same center image C', the same right image C'+, or the left image B'-1 of the subject BO, the same center image B', the same right image B
'10 is the left image R-1 of the subject Ao, and the center image A'
, right images A' are printed and arranged, and the inverted 3D image is completely reversed as a photograph after development, resulting in a normal 3D image suitable for stereoscopic viewing.

The above explanation was made for the purpose of simplifying the explanation and speed of understanding; in reality, countless inverted stereoscopic images exist on the photosensitive surface of the photosensitive material FO for each lenticular element unit, so the above explanation The printing is not done by a step-by-step process, but by a continuous movement of the original plate F'O and the photosensitive material F at a constant relative speed.
As a result, all the inverted three-dimensional images within each lenticular element unit are inverted and converted into normal three-dimensional images.

Furthermore, in the above explanation, the easiest to understand and most desirable method is the relative movement of the original F'o and the light-sensitive material F in which they are moved in opposite directions, but the light-sensitive material F is fixed. The original F'o may be moved synchronously in the same direction at twice the speed of the lenticular screen M, or conversely, the original F6 may be fixed and moved at twice the speed of the lenticular screen M. The light-sensitive material F may also be moved synchronously in the same direction.

In addition, the configuration using a spotlight SL as a light source was adopted because it is simple and a normal method for darkroom work, but the light source projected through the lenticular screen M is a parallel light beam perpendicular to the lenticular screen M. Even more desirable results can be expected if the

The camera of the present invention, which is intended to invert images by the above method, is combined with a lens as shown in FIGS. A special shutter So is used.

The part indicated by the symbol LQ indicates the lens for photographing,
In the case shown in the figure, a lens with a large aperture and a circular shape when viewed from the front is used.

The shutter So, indicated entirely by the symbol So, is a lenticular screen M placed just in front of the photosensitive surface.
Two elongated rectangular blades 11 and 12 arranged in a direction perpendicular to the knitted part formed between each lenticular element of O.
The edges of these two blades near the optical axis are overlapped with each other to maintain a light shielding state.

When using a circular lens as shown in the figure, the same lens L
O should cover the area outward from the area indicated by the dashed-dotted line in Figure 3 above, that is, the area above the area indicated by the upper dashed-dotted line and the area below the area indicated by the downward dashed-dotted line, with light-shielding paint or with an appropriate coating. The inside of the camera dark enclosure must be kept light-tight by covering it with a light-shielding member.

Both ends of each blade 11 and 120 are links 13 and 14 that are pivotally connected to the camera body or a part of the shutter housing with a shaft 20.
and 15 and 16.

Each link has a blade 11. and 12 are also provided with a structure supported by shafts, but the numbers of these support shafts are omitted in the figure.

The upper vane 11 is thereby moved from the closed position to the open position by the rotation of the links 13 and 14 about the axis 20, and likewise the lower vane 12 is moved by the rotation of the links 13 and 14 about the axis 20. It is moved from the closed position to the open position when necessary.

Outer ends of relay rods 21 and 22, which are pivotally connected to one end of a driving rod 18 that can slide through the center of an electromagnet 17 by means of a support shaft 19, are located approximately at the center of the links 13 and 15 among these links. The links 13 and 15 are rotated about their respective shafts 20 via the relay rods 21 and 22 by the movement of the driving rod 18 in the horizontal direction in the figure.

23 is a driven iron piece of the electromagnet 17, and 24 is a driven iron piece of each relay rod 2.
The outer ends of 1 and 22 are restoring springs suspended between parts that pivot links 13 and 15.

The links 14 and 16 are not provided with such a continuous mechanism with the relay rod, but as a result of the driven iron piece 23 being attracted by the excitation action of the electromagnet 17, the links 13 and 15 are connected via the relay rods 21 and 22. are pushed around their respective shafts 20, and in response, their respective shafts 20
Each link 14 and 16 is rotated around and each blade 11
and 12 in opposite directions, conversely, when the excitation action is lost and the restoring spring 24 rotates each link 13 and 15 back, the link moves accordingly. Since 14 and 16 also rotate back, it is effectively link 1.
It is not necessarily necessary to separately provide a restoring spring between 4 and 16.

Reference numeral 25 denotes an aperture adjustment rod as a control member whose lower end is interposed in the movement range of the driven iron piece 23, and whose upper end is a screw shaft 27 mounted and screwed between part 26 of the shutter machine housing.
The diaphragm adjusting rod 25 is moved in the left-right direction in the figure by the rotation of the screw shaft 21 screwed into the upper end thereof, and changes the position it occupies. The amount of movement of the driven iron piece 23 that is attracted when this occurs is regulated.

Therefore, when the driven iron piece 23 is attracted and its movement is large, the blades 1 are moved in opposite directions via the driving rod 18, the relay rods 21 and 22, and the links 13 and 15 accordingly.
The separation action of 1 and 12 also increases, and conversely, the driven iron piece 23
When the iris is stopped by the diaphragm adjustment rod 25 at the beginning of the suction movement, the slit of the shutter opening is made smaller.

28 is a calibration value adjustment button attached to the outer end of the screw shaft 27, and a calibration value indicator 29 is provided on a part of its outer circumference.
The aperture scale (not shown) placed around the rotation area of button 28
It is designed to give instructions at the 0 rotation position.

Therefore, the diaphragm adjustment rod 25 controls the amount of opening of the blades 11 and 12 of the shutter forming the opening by the excitation action of the electromagnet 17, and thereby the blades 11 and 12 are effectively It is also intended to have a diaphragm effect for controlling the amount of incident light, but in order to provide this diaphragm effect to the shutter blades 11 and 12, it is not necessary to use this mechanism from the mechanism shown in the third figure. There is no need to do this.

In other words, a mechanism such as that shown in FIG. 7 listed as another embodiment may be used.

The example shown in FIG. 7 also shows a case where a strip-shaped lens element as shown in FIG. 6 is used as the photographing lens.
The mechanism for adjusting the amount of movement of the shutter blade in the opening direction directly functions as a restraining mechanism for the shutter blade.

In FIG. 7, 125 is an aperture adjustment screw shaft, and the screw shaft 1
25 is screwed through a part 126 of the shutter housing 1, with its upper end facing into the operating area of the blade 12.

Reference numeral 128 denotes a calibration value adjustment button provided at the lower end of the aperture adjustment screw shaft 125, and as in the previous embodiment, an aperture scale is placed around the rotating region (not shown). The indicator 129 is used to indicate the adjusted calibration value.

In this case as well, by twisting the calibration value adjustment button 128 and instructing a predetermined calibration value using the indicator 129, the diaphragm adjustment screw 125, which has moved in the axial direction in response to this, will move the blade 12 and the blade 12 at its upper end. The operating stop position of the blade 11 is determined via the link, and the degree to which the blades 11 and 12 are opened is adjusted.

According to the gap shutter with such a configuration,
By energizing the electromagnet 17, the driven iron piece 23 resists the tension of the suspended restoring spring 24 and moves the electromagnet 17.
With the movement of the drive rod 18, which is moved in the direction of the arrow, the terminals of the relay rods 21 and 22 move outward in a direction to open them, and the upper and lower links 13 and 15
are rotated around their respective shafts 20.

This movement acts in a direction to move the blades 11 and 12 away from the main optical axis of the lens LO, causing the blades 11 and 12 to move away from each other to form a lens aperture for exposure.

At this time, the links 14 and 16 are also rotated about their respective shafts 20, and both of these links 14 and 16 are excited by the opening operation of the blades 11 and 12, and during the opening operation, the aperture adjustment rod 25 or The aperture adjustment screw shaft 125 stops this, and exposure is performed at a predetermined aperture opening.

When the electromagnet 170 is de-energized, the restoring spring 24 pulls the relay rods 21 and 22 inwardly and moves the blades 11 and 12 constituting the shutter toward each other to close the shutter. The energization time of the electromagnet 170 acts as the exposure time, and the exposure amount is determined by the opening state of the blades 11 and 12 and the energization time.

In addition, according to the above embodiment, the two blades 11. and 12
As an example, we have described a mechanism that moves the blades in opposite directions, but it is also possible to move only one of them, or use a single blade, and use the aperture gap formed by the movement as a slit for exposure. Of course, such design modifications and the like are within the scope of application of the present invention and belong to the present invention.

It goes without saying that various modifications and changes can be made in accordance with the spirit of the present invention as long as the unique and distinctive functions are not lost.

Therefore, in the shutter installed in the camera of the present invention, during its opening operation, each blade operates only within a width range according to the adjusted calibration value, and the opening operation only forms a gap.

When taking the above-mentioned stereoscopic photographs using a lenticular screen, it should be taken into consideration that a large number of projected images that are useful for stereoscopic viewing are formed in the direction across the assembled parts, which are dominated by the direction of the assembled parts of the lenticular screen. For example, the expansion of the lens aperture along the direction in which these countless projected images are generated is important.

Therefore, in accordance with the method of stereoscopic photography on which the present invention is based, it is sufficient that the shutter opens in a direction transverse to the direction of the assembly of the lenticular screen as described above, and thereby the lens itself also has a rectangular opening. Other parts are not used.

Therefore, although FIGS. 3 to 5 show examples in which a normal circular lens is used, from the perspective of the purpose of the present invention, it is long and narrow when viewed from the front in accordance with the rectangular opening when the shutter is opened as shown in FIG. 6. It is desirable to use a rectangular lens.

Such a lens also facilitates the space and installation of the above-mentioned gap shutter on the front or back of the lens. Effective.

Next, embodiments and application techniques of the camera for stereoscopic photography of the present invention will be described, but it should be understood that they are naturally included in the scope of the claims.

(1) A patent claim in which the shutter with plate-like blades is composed of two blades that cover the effective aperture of the photographic lens, and the rectangular effective aperture of the photographic lens is brought into an open state by mutually separating the blades. A camera for stereoscopic photography according to item 1.

(2) The shutter having plate-shaped blades is composed of two blades that cover the effective aperture of the photographing lens, and the actuation force for separating them from each other is applied as an actuation amount according to a predetermined amount of exposure; The camera for stereoscopic photography according to claim 1, characterized in that the camera also functions as an aperture for limiting the amount of incident light.

3. The camera for stereoscopic photography according to claim 2, wherein the photographing lens has a rectangular and elongated front shape that fits into the effective opening.

(i) The shutter having plate-shaped blades is composed of two blades that cover the effective aperture of the photographic lens, and the two blades are driven in response to the magnetic action of an electromagnet, 3. The camera for stereoscopic photography according to claim 2, wherein the rectangular effective aperture of the photographing lens is brought into an open state by the mutually separating operation.

M. The shutter having plate-like blades is composed of two blades that cover the effective aperture of the photographing lens, and includes an electromagnet for relatively separating the blades, and an excitation action of the electromagnet to cause the blades to move. In the case of the subject that is activated, and the components regulated in accordance with the school lessons specified by the school lesson control member for the incident of the luminous amount of the applicable component, the ingredients regulated in a predetermined price specified in advance, and the school lessons specified in advance by energization to the electromagnet. 3. The camera for stereoscopic photography according to claim 2, wherein the photographing lens is provided with an aperture for corresponding exposure.

M. The shutter having plate-like blades is composed of two blades that cover the effective aperture of the photographing lens, and includes an electromagnet for relatively separating the blades, and a shutter that responds to the excitation action of the electromagnet. a control member that is positioned in an operating range of the driven shutter blade according to a predetermined calibration value and thereby regulates the opening amount of the shutter blade that opens under the excitation action of the electromagnet; 3. The camera for stereoscopic photography according to claim 2, wherein the shutter blades actuated in response to the excitation action of the shutter blades also act as an aperture for controlling the amount of incident light.

[Brief explanation of drawings]

FIG. 1 shows a part of the photographing optical system when photographing with the camera of the present invention, and is an explanatory diagram illustrating the phenomenon in which the upside-down bowl of the subject is projected onto the photosensitive material. 1. Process of inverting the above-mentioned inverted pot body to form an upright three-dimensional image in order to obtain a print used as a stereoscopic photograph using an original plate whose image is an inverted pot body obtained by the photographing optical system shown in the figure, and its photophotosensitivity Fig. 3 is a rear view showing the shutter attached to the camera of the present invention in relation to the photographic lens, and Fig. 4 is a diagram showing the principle of the system, with some parts omitted and showing the lens, shutter blades, and related mechanical parts. A cross-sectional plan view,
FIG. 5 is a side view showing the relative positions of the photographing lens and the shutter, FIG. 6 is a perspective view showing another example of the photographing lens used in the camera of the present invention, and FIG. 7 is a different embodiment from the example shown in FIG. FIG. 6 is a rear view showing another embodiment. P, Q, R, L... Each point of the subject, LO...
... Photographing lens, MO ... Lenticular screen, ml 5 m21 m3 ... Each lenticular element of the lenticular screen, θ1. θ
2...Comprehensive angle of light flux, FO...Photosensitive material, So...Shutter A□, B□
t C□ ...... Three-dimensional subject, A ten, B ten. C10...Right side of the subject, A, B, C...
...Front side of the subject, A-, B-, C-...Left side of the subject, PI, P2FQ2. Q3. R3, Ll・
...Each imaging point of the object, A'+, B'+,
C'10...Right image of the subject, A') B', C
'...Central image of subject, A'-, B'-,
C' -...Left image of subject, SL...
・Spotlight, M...Lenticular screen, Fol...Original plate with an inverted figure, F
...Unsensitized light-sensitive material, 1L12...
・Shutter blade, 13, 14° 15.16...
・Link, 17... Electromagnet, 18...
Drive rod, 21, 22...Relay rod, 24...
... Spring for restoration, 25. ...School motto footrest, 12
5...School discipline spiral.

Claims (1)

[Scope of Claims] 1. A lenticular screen immovably fixed in close proximity to the photosensitive material loading position, and an opening gap in the direction across the knitted portion between each lenticular lens element of this lenticular screen. It consists of a shutter with plate-like blades that rotate, and a photographic lens that has an effective aperture between planes that are parallel to each other in a direction that crosses the editing section with the main optical axis as the center. A stereoscopic photography camera characterized in that an inverted three-dimensional projection image is formed on the photosensitive material through the lenticular screen. 2. A lenticular screen that is immovably fixed in close proximity to the photosensitive material loading position immediately before the photosensitive material loading position, and a plate-shaped blade that forms an opening gap in the direction across the knitted part between each lenticular lens element of this lenticular screen. a shutter having a shutter, an electromagnet for operating the shutter made of plate-shaped blades, a control member for regulating the opening amount of the shutter moved by the excitation action of the electromagnet, and the edited section of the lenticular screen centered on the main optical axis. and a photographing lens having an effective aperture between mutually parallel planes in a direction transverse to each other, and the exposure time is controlled by the energization time of the electromagnet, and the blade shutter opens under the excitation action of the electromagnet. A diaphragm aperture for controlling the amount of incident light is provided by the amount of light, and an inverted three-dimensional projection image is formed on the photosensitive material through the lenticular screen with a single exposure. A camera for taking stereoscopic photographs.