JP6188328B2 - 3D image display method - Google Patents

Description

  The present invention relates to a three-dimensional display device, and more particularly to a combination of a few micro convex lens two-dimensional arrays and a photoreceptor, or a method for displaying a three-dimensional image with a few micro projectors.

  The combination of a micro-convex lens two-dimensional array and a photoconductor has the ability to record and reproduce three-dimensional light rays. G. Lippmann found and proposed in 1908 as a paper. This method is currently called “IP” (Integral Photography).

  Patent Document 1 states that “a plurality of basic units that two-dimensionally scan a light beam and project it in the air are two-dimensionally arranged, and a predetermined image signal is input to each basic unit to The three-dimensional image display device is characterized in that the beam light source is modulated in luminance in response to the above, and it is possible to eliminate lens aberrations that are unavoidable in integral photography using a conventional lens array. It is.

JP 2012-98341 A

  The above-mentioned Integral Photography (a three-dimensional image recording / reproducing system combining a micro-convex lens two-dimensional array and a photoreceptor, proposed by MG Lipmanmann, France) has an excellent three-dimensional image display capability. As is known, it is necessary to arrange micro convex lenses two-dimensionally and to arrange a micro two-dimensional image on each of the rear surfaces of the lens, which causes a problem that the structure is very complicated.

  Further, in Patent Document 1, “a plurality of basic units that two-dimensionally scan a light beam and project it in the air are arranged two-dimensionally, and a predetermined image signal is input to each basic unit to perform two-dimensional scanning movements”. The three-dimensional image display device is characterized in that the beam light source is modulated in luminance in response to the above, and it is possible to eliminate lens aberrations that are unavoidable in integral photography using a conventional lens array. However, there is a problem that the structure is complicated because it is necessary to arrange a plurality of basic units two-dimensionally as in the case of the integral photography.

  In the present invention, a combination of a micro-convex lens one-dimensional array and a photoreceptor, or a basic unit is arranged one-dimensionally by combining a mirror, and a combination of the micro-convex lens one-dimensional array and the photoreceptor, or It is to provide a three-dimensional image display that dramatically reduces the number of basic units.

  In order to solve the above problems, the present invention provides the following means.

  In the present invention, a combination of a micro convex lens array and a flat display, or a combination of a micro convex lens array and the flat display by combining a one-dimensional arrangement of basic units and a mirror that vibrates at high speed, or Although the basic units are arranged in a unified manner, the image reflected on the vibrating mirror that vibrates at high speed is observed, so that it is displayed as if it is a two-dimensional array.

  In the present invention, a combination of the micro-convex lens array and the photosensitive member is combined with a combination of a one-dimensional array of micro-convex lenses and a flat display, or a mirror that vibrates at high speed with a one-dimensional arrangement of basic units. A three-dimensional image display that dramatically reduces the number of lenses or the number of basic units.

Diagram explaining the IP display principle 1 is a perspective view of FIG. The figure explaining that IP display is equivalent to a micro projector array The perspective view which shows an example of IP of the horizontal line lens array used for this invention The perspective view which shows an example of the horizontal 1 row projector array used for this invention The figure explaining the outline | summary of a structure of one Example of this invention. The figure which shows the state which has the vibrating mirror of one Example of this invention in a 2nd phase. The figure which shows the state which has the vibrating mirror of one Example of this invention in a 3rd phase. The figure which shows the state which has the vibration mirror of one Example of this invention in a 4th phase. The figure which shows the apparent projector arrangement | sequence visible in one Example of this invention The figure explaining operation of other examples of a horizontal line projector array

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1 shows a certain tertiary having vertices A, B, and C by conventional Integral Photography (a three-dimensional image recording / reproducing method combining a micro-convex lens two-dimensional array and a photoreceptor proposed by MG Lipmanmann, France). It is the figure which showed a mode that the original image 7 was displayed.

  Here, 1 is a two-dimensional array of micro-convex lenses, 2 is a flat display placed on the focal plane of the two-dimensional array of micro-convex lenses, and each plane projected by each lens of the two-dimensional array of micro-convex lenses on the flat display 3′a, 3′b, 3′c... Are displayed in the image, and the entire image is G3 ′ and 4 is a backlight.

  FIG. 2 is a perspective view of Integral Photography comprising the micro convex lens two-dimensional array, a flat display, and a backlight. The micro convex lens two-dimensional array and the number of planar images corresponding to each lens are large and complicated.

  In FIG. 3, as described in Patent Document 1, Integral Photography can be considered as a set of micro projectors.

  Here, 1 'is a projection lens of the microprojector, 3' is a planar image of the microprojector, and 4 'is a light source of the microprojector.

  In Integral Photography, it is necessary to arrange micro-convex lenses in two dimensions, and to arrange a micro two-dimensional image on each of the back surfaces of the lenses, and to arrange a plurality of basic units in two dimensions, and the structure is complicated. There was a problem.

  FIG. 4 is a diagram showing a horizontal row lens array 1 ″, a flat display 2 ″, and a backlight 4 ″ used in the present invention.

  FIG. 5 is a diagram showing a horizontal single row micro projector array Pa, Pb, Pc... That emits a light beam group similar to that shown in FIG.

  In FIG. 6, the micro projector array Gp arranged in a horizontal row can emit different light beams vertically and horizontally, so that the viewpoint Vp corresponds to the phase of vibration by combining the vibrating plane mirrors M1 and M2 that reciprocate linearly at high speed. Different rays can be reached.

  Here, Cr is a crank and is rotated at high speed by a motor (not shown). R is a rod, and a movable mirror that combines the eccentric shaft of the crank and M1 and M2 is pin-connected. SS is a fixed slide shaft, and SB is a slide bush that slides on the slide shaft SS, and supports a movable mirror combining M1 and M2 so that only a linear motion can be performed.

  As a result of this configuration, the rotational motion of the motor is converted into a reciprocating linear motion by a link constituted by the crank Cr, the rod R, the slide shaft SS, and the slide bush SB, and M1, The movable mirror combined with M2 reciprocates linearly (vibrates) at high speed.

  FIG. 6 shows a phase state in which the movable mirror is in the uppermost position. The movable mirror combining M1 and M2 is in the uppermost position, and is viewed from the viewpoint Vp as a mirror image I-Gp of the one-dimensional array of projector arrays Gp. Looks at the top.

  FIG. 7 is a view showing a state after the motor has been rotated about 90 degrees from the state of FIG. 6. The movable mirror combining M1 and M2 is at an intermediate height and is a one-dimensional array when viewed from the viewpoint Vp. The mirror image I-Gp of the projector array Gp is seen at the same height as the viewpoint.

  FIG. 8 is a diagram showing a state after the motor has further rotated about 90 degrees from the state of FIG. 7. The movable mirror combining M1 and M2 is at the lowest position, and is one-dimensionally arranged from the viewpoint Vp. The mirror image I-Gp of the projector array Gp also appears at the lowest position.

  FIG. 9 is a view showing a state after the motor has been rotated about 90 degrees from the state of FIG. 8, and the movable mirror combining M1 and M2 is at an intermediate height and is one-dimensionally arranged from the viewpoint Vp. The mirror image I-Gp of the projector array Gp is seen at the same height as the viewpoint.

  FIG. 10 is a diagram illustrating an image that can be seen from the viewpoint Vp as a result of repeating the phase change as shown in FIGS. 6 to 9 at high speed. If the motor is rotated at a speed (for example, 48 times or more per second), the movable mirror combining M1 and M2 also reciprocates at this speed, and the mirror image of the projector array Gp includes a plurality of mirror images I-Gp. -A, I-Gp-b, I-Gp-c... Are always fixed and appear to be stacked in a counter-position, so that a three-dimensional image similar to that of the conventional two-dimensionally arranged projector array is observed. Can do.

  Here, the viewpoint Vp can move left and right (in a direction orthogonal to the drawing).

  In FIG. 6, the horizontal row of microprojector arrays shown in FIG. 5 has been described. However, the lens array shown in FIG. 4 may use a one-dimensional array of integral photography.

  FIG. 11 is a perspective view of a plurality of basic units that are two-dimensionally scanned and projected in the air with the same light beam as in Patent Document 1, and this also functions as a micro-projector array arranged in a horizontal row. It can be used for the projector array of the present invention.

  In the three-dimensional image display apparatus embodying the present invention, the number of microprojectors can be drastically reduced, so that a display having a simple structure and a low cost can be provided.

DESCRIPTION OF SYMBOLS 1 Micro convex lens Two-dimensional array 1 'Projection lens 1 "of microprojector Lens array 2 of 1st Example of this invention Planar display 2" Planar display 3'a, 3'b of 1st Example of this invention, 3′c... Each planar image displaying a 3D image 3 ′ planar image 4 of the microprojector 4 backlight 4 ′ light source 4 ′ of the microprojector backlight 7 according to the first embodiment of the present invention 3D image A First vertex B of a three-dimensional image Second vertex C of a three-dimensional image Third vertex of a three-dimensional image Cr Crank Gp Micro-projector group I-Gp Mirror image I-Gp- at a certain moment of the projector group Gp a, I-Gp-b, I-Gp-c ... Each mirror image M1 of the projector group Gp First plane mirror M2 Second plane mirror Pa, Pb, Pc ... Each micro projector R SB Slide bush SS Slide shaft Vp Viewpoint

Claims (1)

A group of light beams emitted from a microprojector array arranged in a horizontal row, or a stack of microprojector arrays arranged in a horizontal row, vibrates at a high speed so that it cannot be seen that it is moving by a human afterimage. Three-dimensional, characterized in that the two plane mirrors are set so that they are reflected by two plane mirrors orthogonal to each other, and from the viewpoint, the images by the microprojector array appear to be stacked vertically. Image display method.

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