JP2014134682A - Three-dimensional image display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of displaying three-dimensional images using a three-dimensional display device which employs a combination of a two-dimensional array of a small number of convex microlenses and a photosensitive body, or a small number of micro-projectors.SOLUTION: A three-dimensional image display method allows a combination of a convex microlens array and a photosensitive body, or basic units to be one-dimensionally arranged by using mirrors in combination. By combining a plurality of flat mirrors or concave cylindrical mirrors, an image reflected from the mirrors looks like an image projected by a two-dimensional array instead of the one-dimensionally arranged combination of the convex microlens array and the photosensitive body or the one-dimensionally arranged basic units.

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 photoreceptor, or a basic unit is arranged one-dimensionally by combining a mirror, and a plurality of plane mirrors or cylindrical concave mirrors are combined to form the micro-convex lens array and the The combination of the photoconductors or the basic units are arranged in a unified manner, but the image reflected on the mirror is observed, so that it is displayed as if it is a two-dimensional array.

  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 Provides a 3D image display that dramatically reduces 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 figure which shows an example of the horizontal line lens array used for this invention The figure 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 other example of the horizontal 1 row projector array used for this invention The figure explaining the outline | summary of a structure of the 2nd Example of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  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.

  FIG. 3 is a diagram for explaining that Integral Photography can be considered as a set of microprojectors, as described in Patent Document 1. In FIG.

  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 micro projector arrays Pa, Pb, Pc... Arranged in a horizontal row that emits a light beam group similar to that shown in FIG.

  Since the micro projector array Gp arranged in a horizontal row shown in FIG. 6 can emit different light beams in the vertical and horizontal directions, different light beams can reach each of the plane mirrors Ma, Mb, Mc. Since the apparent two-dimensionally arranged projector arrays I-GP-a, I-Gp-b, I-Bp-c,..., Different rays can reach the viewpoint, the conventional two-dimensionally arranged projector array. The same three-dimensional image can be observed.

  Here, the viewpoint Vp can be moved left and right (in a direction perpendicular to the drawing sheet).

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

  FIG. 7 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.

  FIG. 8 is a diagram showing an outline of another embodiment of the present invention, in which each plane mirror Ma, Mb, Mc... In FIG. 6 is changed to a single cylindrical concave mirror. Apparent two-dimensional arrangement seen from the viewpoint Vp Different rays can reach the viewpoint Vp from the projector arrays I-GP-a, I-Gp-b, I-Bp-c,... A three-dimensional image similar to the projector array can be observed.

  However, the projection lens of the microprojector does not appear to be stacked vertically, but appears to be a single lens that is elongated vertically. However, since the pixels of the projector group are being observed, there is no problem.

  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 for displaying a three-dimensional 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 a certain three-dimensional image 8a 8b, 8c, each basic unit 9a, each laser diode 10a, each beam shaper 11a, each fixed mirror 12a, each biaxial scanning mirror A, the first of a three-dimensional image. Vertex B Second vertex C of a three-dimensional image Third vertex G3 ′ of a three-dimensional image Planar image group G8 displaying a three-dimensional image Planar image group Gp Micro projector group I-Gp-a, -Gp-b, I-Gp-c each mirror M cylindrical concave mirror Ma of ... projector group Gp, Mb, Mc, ... each plane mirror Pa, Pb, Pc, ... each microprojectile Vp viewpoint

Claims (2)

  A microprojector array arranged in a horizontal row, or a stack of several microprojector arrays arranged in a horizontal row, and a plurality of flat mirrors that are narrow in height and longer in width than the microprojector array. The three-dimensional image display method is characterized in that the plane mirror group is set so that the microprojector array appears to be stacked vertically from the viewpoint.   A combination of a micro projector array arranged in a horizontal row and a cylindrical concave mirror that is curved up and down and straight in the horizontal direction makes it look as if the micro projector array is stacked vertically. 3D image display method.

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