JP2012234111A - Stereoscopic display device and method for manufacturing stereoscopic display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrict displacement of a color filter in a stereoscopic display device.SOLUTION: An inventive stereoscopic display device (100) is a stereoscopic display device displaying an object stereoscopically, and includes a white light source (10) emitting white light and a color filter (20). The color filter (20) includes a plurality of coloration parts each changing the white light into colored light, and the white light source (10) and the color filter (20) are configured such that a beam of light emitted from the white light source (10) and transmitted through the coloration parts of the color filter (20) corresponds to light beam diffused from the object. The stereoscopic display device (100) is further provided with a transmission member (40) having principal planes (42a, 42b), and the color filter (20) is printed on the principal plane (42a) of the transmission member (40).

Description

  The present invention relates to a stereoscopic display device and a method for manufacturing a stereoscopic display device.

  In recent years, stereoscopic display has attracted attention. There is a stereoscope method as a well-known stereoscopic display method. In the stereoscope method, display is performed so that right-eye and left-eye planar images can be seen by the right and left eyes, not a stereoscopic image. However, in the stereoscope method, since the display does not change according to the viewing position, natural stereoscopic display cannot be performed.

  As another stereoscopic display method, a method of reproducing (reproducing) light rays is known. In this system, color display is performed by reproducing light rays scattered from an object using white light emitted from a light source (see, for example, Patent Document 1). Patent Document 1 describes a stereoscopic display device that performs stereoscopic display by reproducing (reproducing) a light beam emitted from a white light source and transmitted through a pinhole array plate.

Japanese Patent Laid-Open No. 10-239785

  In the three-dimensional display device of Patent Document 1, the light beam defined by the pinhole array plate and the reproduction film (color filter) reproduces the light beam scattered from the object, and it is necessary to appropriately arrange the color filter. . However, when the color filter is arranged alone as in the stereoscopic display device of Patent Document 1, the position of the color filter may be shifted due to a change in the shape of the color filter, etc. You may not be able to do it.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a stereoscopic display device that suppresses the positional deviation of the color filter.

  A stereoscopic display device according to the present invention is a stereoscopic display device that stereoscopically displays an object, and includes a white light source that emits white light and a color filter, and each of the color filters colors the white light. The white light source and the color filter are configured to correspond to light rays that are emitted from the white light source and transmitted through the color portion of the color filter are scattered from the object. The stereoscopic display device further includes a transmission member having a first main surface and a second main surface, and the color filter is printed on the first main surface of the transmission member.

  In one embodiment, the stereoscopic display device further includes an optical member, and the optical member includes a plurality of unit portions each defining the light beam together with the coloring portion of the color filter, and the optical member and the color The filter is configured so that light rays defined by the unit portion and the coloring portion correspond to light rays scattered from the object.

  In one embodiment, the optical member includes a pinhole mask that selectively transmits the white light or the colored light.

  In one embodiment, the pinhole mask is printed on the second main surface of the transmissive member.

  In one embodiment, the optical member includes a lens array that defines the light beam so as to be refracted in different directions depending on the colored portion.

  In one embodiment, the optical member is provided on the viewer side with respect to the transmission member.

  In one embodiment, the color filter is provided on the viewer side with respect to the transmission member.

  In one embodiment, the white light source has a point light source array in which a plurality of point light sources are arranged.

  In one embodiment, the white light source includes a surface light source.

  In one embodiment, the colored portion of the color filter corresponds to a still image.

  A manufacturing method of a stereoscopic display device according to the present invention is a manufacturing method of a stereoscopic display device that displays an object three-dimensionally, a step of preparing a white light source that emits white light, and a color filter for the white light source. The color filter includes a plurality of coloring portions each changing the white light into colored light, and the white light source and the color filter are arranged from the white light source. A light beam emitted and transmitted through the colored portion of the color filter is configured to correspond to a light beam scattered from the object, and the manufacturing method of the stereoscopic display device includes a first main surface and a second main surface. The method further includes a step of preparing a member and a step of printing the color filter on the first main surface of the transmission member.

  The light beam regulating member according to the present invention is a light beam regulating member used in a stereoscopic display device for stereoscopically displaying an object, and includes a color filter and a pinhole mask, and each of the color filters is colored white light. The pinhole mask is provided with a plurality of pinholes that transmit the white light or the colored light, and the pinhole mask and the color filter include The light beam defined by the pinhole and the coloring portion is configured to correspond to the light beam scattered from the object, and the light beam defining member further includes a transmission member having a first main surface and a second main surface. The color filter is printed on the first main surface of the transmission member, and the pinhole mask is printed on the second main surface of the transmission member. It has been.

  In one embodiment, the colored portion of the color filter corresponds to a still image.

  A method for producing a light beam regulating member according to the present invention is a method for producing a light beam regulating member used in a stereoscopic display device for stereoscopically displaying an object, and a transmission member having a first main surface and a second main surface is prepared. A step, a step of printing a color filter on the first main surface of the transmission member, and a step of printing a pinhole mask on the second main surface of the transmission member.

  A stereoscopic display device according to the present invention is a stereoscopic display device that stereoscopically displays an object, and includes a white light source that emits white light and a color filter, and each of the color filters colors the white light. The white light source and the color filter are configured to correspond to light rays that are emitted from the white light source and transmitted through the color portion of the color filter are scattered from the object. The stereoscopic display device further includes a transmission member having a first main surface and a second main surface, and the color filter is detachably provided on the first main surface of the transmission member.

  In one embodiment, the stereoscopic display device further includes an optical member, and the optical member includes a plurality of unit portions each defining the light beam together with the coloring portion of the color filter, and the optical member and the color The filter is configured so that light rays defined by the unit portion and the coloring portion correspond to light rays scattered from the object.

  In one embodiment, the optical member includes a pinhole mask that selectively transmits the white light or the colored light.

  In one embodiment, the pinhole mask is detachably provided on the second main surface of the transmission member.

  In one embodiment, the optical member includes a lens array that defines the light beam so as to be refracted in different directions depending on the colored portion.

  In one embodiment, the optical member is provided on the viewer side with respect to the transmission member.

  In one embodiment, the color filter is provided on the viewer side with respect to the transmission member.

  In one embodiment, the white light source has a point light source array in which a plurality of point light sources are arranged.

  In one embodiment, the white light source includes a surface light source.

  In one embodiment, the colored portion of the color filter corresponds to a still image.

  A manufacturing method of a stereoscopic display device according to the present invention is a manufacturing method of a stereoscopic display device that displays an object three-dimensionally, a step of preparing a white light source that emits white light, and a color filter for the white light source. The color filter includes a plurality of coloring portions each changing the white light into colored light, and the white light source and the color filter are arranged from the white light source. A light beam that is emitted and transmitted through the colored portion of the color filter corresponds to a light beam scattered from the object, and the manufacturing method of the stereoscopic display device includes a first main surface and a second main surface. The method further includes a step of preparing a transmissive member, and a step of attaching the color filter to the first main surface of the transmissive member so as to be removable.

  A stereoscopic display device according to the present invention is a stereoscopic display device that stereoscopically displays an object, and includes a white light source that emits white light and a color filter, and each of the color filters colors the white light. The white light source and the color filter are configured to correspond to light rays that are emitted from the white light source and transmitted through the color portion of the color filter are scattered from the object. The stereoscopic display device further includes a transmission member having a first main surface and a second main surface, the color filter is provided on the first main surface of the transmission member, and the white light source is Each has a plurality of light emitting diodes emitting white light.

  In one embodiment, the colored portion of the color filter corresponds to a still image.

  A manufacturing method of a stereoscopic display device according to the present invention is a manufacturing method of a stereoscopic display device that displays an object three-dimensionally, a step of preparing a white light source that emits white light, and a color filter for the white light source. The color filter includes a plurality of coloring portions each changing the white light into colored light, and the white light source and the color filter are arranged from the white light source. A light beam that is emitted and transmitted through the colored portion of the color filter corresponds to a light beam scattered from the object, and the manufacturing method of the stereoscopic display device includes a first main surface and a second main surface. A step of providing a transmissive member, and a step of forming the color filter on the first main surface of the transmissive member, wherein the white light source is prepared. The white light source includes a plurality of light emitting diodes, each of which emits white light.

  A stereoscopic display device according to the present invention is a stereoscopic display device that stereoscopically displays an object, and includes a white surface light source that emits white light, a color filter, and an optical member, and each of the color filters includes the above-described color filter. The optical member includes a plurality of colored portions that change white light into colored light, and the optical member includes a plurality of unit portions that define light rays together with the colored portion of the color filter, and the color filter and the optical member are The light beam defined by the coloring unit and the unit unit is configured to correspond to a light beam scattered from the object, and the stereoscopic display device further includes a transmission member having an entrance surface and an exit surface, and the color filter Is provided on the entrance surface of the transmission member, and the optical member is provided on the exit surface of the transmission member.

  In one embodiment, the optical member includes a pinhole mask that selectively transmits the colored light.

  In one embodiment, the optical member includes a lens array that defines the light beam so as to be refracted in different directions depending on the colored portion.

  In one embodiment, the colored portion of the color filter corresponds to a still image.

  A manufacturing method of a stereoscopic display device according to the present invention is a manufacturing method of a stereoscopic display device that displays an object in three dimensions, and includes a step of preparing a white surface light source that emits white light, and a color for the white surface light source. A step of disposing a filter and an optical member, wherein the color filter includes a plurality of coloring portions each changing the white light into colored light, and the optical member includes The color filter includes a plurality of unit portions that define light rays together with the coloring portion, and the color filter and the optical member correspond to light rays scattered by the object by light rays defined by the coloring portions and the unit portions. The method of manufacturing the stereoscopic display device includes a step of preparing a transmission member having an incident surface and an output surface, and the incident of the transmission member. Further comprising a step of forming the color filter, and forming the optical member to the exit surface of the transparent member.

  ADVANTAGE OF THE INVENTION According to this invention, the three-dimensional display apparatus which suppressed the position shift of a color filter can be provided.

It is a schematic diagram of an embodiment of a stereoscopic display device according to the present invention. It is a schematic diagram for demonstrating the stereoscopic display method in the stereoscopic display device of this embodiment, (a) is a schematic diagram which shows the light scattered from a certain point, (b) is a schematic diagram which shows recording of a light ray. (C) is a schematic diagram of the stereoscopic display device of the present embodiment. It is a schematic diagram for demonstrating the stereoscopic display method in the stereoscopic display device of this embodiment, (a) is a schematic diagram which shows the light scattered from a certain point, (b) is a schematic diagram which shows recording of a light ray. (C) is a schematic diagram of the stereoscopic display device of the present embodiment. It is a schematic diagram for demonstrating the method of displaying an object in the back | inner side in the stereoscopic display apparatus of this embodiment, (a) is a schematic diagram which shows recording of a light ray, (b) is this implementation. It is a schematic diagram of the stereoscopic display device of the embodiment. It is a schematic diagram for demonstrating the method of displaying an object in front of a stereoscopic display apparatus in the stereoscopic display apparatus of this embodiment, (a) is a schematic diagram which shows recording of a light ray, (b) is this implementation. It is a schematic diagram of the stereoscopic display device of the embodiment. (A) And (b) is typical sectional drawing of the three-dimensional display apparatus of this embodiment. It is a typical perspective view of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment. (A)-(d) is a schematic diagram for demonstrating the manufacturing method of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment. (A) And (b) is typical sectional drawing of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment. (A) And (b) is a typical perspective view of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment. (A)-(d) is a schematic diagram for demonstrating the manufacturing method of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment. It is typical sectional drawing of the three-dimensional display apparatus of this embodiment.

  Hereinafter, embodiments of a stereoscopic display device and a method for manufacturing a stereoscopic display device according to the present invention will be described with reference to the drawings.

[3D display device 1]
FIG. 1 shows a schematic diagram of a stereoscopic display device 100 of the present embodiment. The stereoscopic display device 100 includes a white light source 10, a color filter 20, and a pinhole mask 32. The white light source 10 emits white light. Here, the white light source 10 is a surface light source.

  In the pinhole mask 32, regions having high transmittance are arranged in a predetermined pattern with respect to regions having low transmittance. A region with high transmittance in the pinhole mask 32 is also called a pinhole, and a region with low transmittance in the pinhole mask 32 is also called a mask portion. The pinhole mask 32 is provided with a plurality of pinholes. Here, the pinhole mask 32 is provided closer to the white light source 10 than the color filter 20, and the pinhole mask 32 selectively transmits white light emitted from the white light source 10.

  In the stereoscopic display device 100 according to the present embodiment, the color filter 20 includes a plurality of coloring portions that change white light into colored light. For example, the colored portion exhibits a color in which red, green, and blue are mixed at an arbitrary ratio. The colored portion of the color filter 20 corresponds to a still image. Here, the color filter 20 is provided on the viewer V side with respect to the pinhole mask 32, and the color filter 20 changes the white light sampled by the pinhole mask 32 into colored light.

  In the stereoscopic display device 100, the color filter 20 and the pinhole mask 32 are configured so as to correspond to light rays scattered from an object on which the light rays defined by the colored portions of the color filter 20 and the pinholes of the pinhole mask 32 are displayed. Has been. Thereby, the light scattered from the object can be reproduced (reproduced) and stereoscopic display can be performed. For example, the object is displayed at the intersection of rays defined by the colored portion of the color filter 20 and the pinhole of the pinhole mask 32.

  The stereoscopic display device 100 further includes a transmissive member 40 having main surfaces 42a and 42b. Here, the main surface 42 a of the transmissive member 40 faces the observer V, and the main surface 42 b of the transmissive member 40 faces the white light source 10. For example, the transmissive member 40 includes a transparent substrate formed from acrylic resin, glass, or plastic.

  In the stereoscopic display device 100 of the present embodiment, the color filter 20 is printed on the main surface 42 a of the transmissive member 40, and the pinhole mask 32 is printed on the main surface 42 b of the transmissive member 40. Here, the main surfaces 42a and 42b are both flat surfaces. The thickness of the transmissive member 40 is defined by the distance between the main surface 42a and the main surface 42b. In the following description of the present specification, the main surfaces 42a and 42b may be referred to as a first main surface 42a and a second main surface 42b, respectively. In the following description of the present specification, the stereoscopic display device 100 may be simply referred to as the display device 100, and the white light source 10 may be simply referred to as the light source 10.

  In the stereoscopic display device 100 of the present embodiment, the color filter 20 is provided on the main surface 42a of the transmissive member 40, and the shape of the color filter 20 is unlikely to change. For this reason, the position shift of the color filter 20 can be suppressed, and the replacement of the color filter 20 accompanying the shape change can be suppressed. Furthermore, in the stereoscopic display device 100 of the present embodiment, the color filter 20 is formed by printing, and the color filter 20 is arranged with high accuracy similar to the printing accuracy. Further, in the stereoscopic display device 100 shown in FIG. 1, the pinhole mask 32 is printed on the main surface 42 b of the transmissive member 40, thereby simplifying the alignment of the color filter 20 and the pinhole mask 32. Can do.

  Further, in the stereoscopic display device 100 shown in FIG. 1, the color filter 20, the pinhole mask 32, and the transmission member 40 are integrally provided, and light having a specific color and traveling direction is emitted from the color filter 20 and the pinhole. Defined by mask 32. In the following description of the present specification, the color filter 20, the pinhole mask 32, and the transmissive member 40 that are provided integrally may be referred to as the light beam defining member 200.

  The transmissive member 40 may further include a transparent member attached to the transparent substrate, and the transparent member on which the color filter 20 or the pinhole mask 32 is printed may be attached to the transparent substrate. Further, the transmissive member 40 may further include an optical element that transmits light through at least a part attached to the transparent substrate.

  The stereoscopic display device 100 will be described with reference to FIG. Since an arbitrary object can be handled as a set of a plurality of points, here, in order to avoid an excessively complicated description, recording and reproduction of light rays from a point A included in the object will be described.

  As shown in FIG. 2A, light is scattered from the point A, and this light reaches the observer V. When the observer V receives the light spreading from the point A, the point A is visually recognized.

  Prior to the fabrication of the stereoscopic display device 100, as shown in FIG. 2B, the pinhole mask P and the color photodetector D are arranged within the range of light scattered from the point A. The pinhole mask P is arranged closer to the point A than the color photodetector D. In the pinhole mask P, areas with high transmittance are arranged in a predetermined pattern with respect to areas with low transmittance. A region having a high transmittance in the pinhole mask P is also called a pinhole, and a region having a low transmittance in the pinhole mask P is also called a mask portion. For example, the pinhole mask P is a plate that does not transmit light in which pinholes (holes) are provided in a predetermined pattern. For example, the pinholes are arranged in a matrix at a predetermined pitch. However, the pinholes do not have to be arranged in a matrix. The color photodetector D detects the color component and intensity of the light transmitted through the pinhole mask P. For example, the color photodetector D has a plurality of photodetectors provided with corresponding color filters. The color filter has, for example, red, green, and blue colored portions.

  Here, focusing on the light spreading from the point A, it can be said that an infinite number of light rays are scattered from the point A. The pinhole of the pinhole mask P selectively transmits the light spreading from the point A, and the light transmitted through the pinhole mask P is detected by the color photodetector D. In the color light detector D, for example, the intensity of each color component of the light that has passed through each pinhole is detected. The light beam is defined by the combination of the pinhole of the pinhole mask P and the detection result of the light detection unit in the color photodetector D. In this way, the light beam from the point A is recorded. The stereoscopic display device 100 according to the present embodiment is manufactured using, for example, the arrangement of the pinhole mask P and the detection result of the color photodetector D.

  FIG. 2C shows a schematic diagram of the stereoscopic display device 100 of the present embodiment. The color filter 20 is provided on the main surface 42 a of the transmission member 40, and the pinhole mask 32 is provided on the main surface 42 b of the transmission member 40. The pinhole mask 32 has the same shape and arrangement pattern as the pinhole mask P shown in FIG. Here, the light source 10 is a surface light source that emits white light. The color filter 20 is disposed at a position where the color photodetector D is disposed in FIG. The color filter 20 has a colored portion corresponding to the detection result of the color photodetector D.

  In the stereoscopic display device 100, the light emitted from the light source 10 and defined by the pinhole mask 32 and the color filter 20 reproduces (reproduces) the light scattered from the point A, and the viewer V receives the stereoscopic display. It appears that the point image A is displayed in the back of the apparatus 100. The stereoscopic display device 100 forms the point image A in this way. As will be described later, a point light source may be used as the light source 10. A point light source is arrange | positioned in the location which has arrange | positioned the pinhole mask P in FIG.2 (b). For example, the point light source is a light emitting diode (LED).

  In addition, in FIG.2 (c) referred by the above-mentioned description, although the main surfaces 42a and 42b of the transmissive member 40 were planes, this invention is not limited to this. The main surfaces 42a and 42b of the transmission member 40 may be curved surfaces.

  The stereoscopic display device 100 will be described with reference to FIG. As shown in FIG. 3A, light is scattered from the point A, and this light reaches the observer V.

  Prior to the manufacture of the stereoscopic display device 100, as shown in FIG. 3B, the pinhole mask P and the color photodetector D are arranged within the range of light scattered from the point A. The pinhole mask P is disposed closer to the point A than the color photodetector D. Here, each pinhole of the pinhole mask P is provided on a curved surface, and each detection portion of the color photodetector D is also provided on the curved surface.

  Focusing on the light spreading from the point A, it can be said that an infinite number of light rays diverge from the point A. However, by providing the pinhole mask P, the light corresponding to the pinhole of the pinhole mask P is reflected in the pinhole mask P. Transparent. The light transmitted through the pinhole mask P is detected by the color photodetector D. In the color light detector D, for example, the intensity of each color component of the light that has passed through each pinhole is detected. In this way, the light beam from the point A is recorded.

  FIG. 3C is a schematic diagram of the stereoscopic display device 100 of the present embodiment. The color filter 20 is provided on the main surface 42 a of the transmission member 40, and the pinhole mask 32 is provided on the main surface 42 b of the transmission member 40. In the stereoscopic display device 100, the light beam emitted from the light source 10 and defined by the pinhole mask 32 and the color filter 20 reproduces the light beam scattered from the point A, and the viewer V receives the light from the stereoscopic display device 100. It looks like point image A is displayed in the back. The stereoscopic display device 100 can perform stereoscopic display in this way. 2C and 3C, the thickness of the transmission member 40 (the distance between the main surface 42a and the main surface 42b of the transmission member 40) is substantially constant, and the main surface 42a and the main surface 42b. Are parallel to each other, but the present invention is not limited to this. The main surface 42a and the main surface 42b are non-parallel, and the thickness of the transmission member 40 may not be constant.

  In the display device 100, light rays emitted from the light source 10 and defined by the color filter 20 and the pin hose mask 32 correspond to light rays scattered from an object displayed in three dimensions. The display device 100 may display an object behind the display device 100 as viewed from the observer V, or may display an object in front of the display device 100.

  For example, the display device 100 displays an object behind the display device 100 as viewed from the observer V. Hereinafter, the stereoscopic display device 100 (recording and reproducing light rays) will be described with reference to FIG.

  As shown in FIG. 4A, the light scattered from the object X and transmitted through the pinhole mask P is detected by the color photodetector D. Here, attention is paid to point A and point B of the object X. Light passing through the pinhole of the pinhole mask P from the point A is detected by the color photodetector D. Similarly, light passing through the pinhole of the pinhole mask P from the point B is detected by the color photodetector D. The When attention is paid to the same pinhole of the pinhole mask P, the positions of the point A and the point B are different, so that the light passing through the same pinhole from the point A and the point B is different in the color photodetector D. Detected in position.

  FIG. 4B shows a schematic diagram of the stereoscopic display device 100. The stereoscopic display device 100 is manufactured using, for example, the arrangement of the pinhole mask P and the detection result of the color photodetector D shown in FIG. In the stereoscopic display device 100 of the present embodiment, the light source 10 is a surface light source. The color filter 20 is provided on the main surface 42 a of the transmission member 40, and the pinhole mask 32 is provided on the main surface 42 b of the transmission member 40. The pinhole mask 32 has the same shape and arrangement pattern as the pinhole mask P shown in FIG. The color filter 20 reflects the detection result in the color photodetector D.

  The light emitted from the light source 10 passes through the pinhole mask 32 and the color filter 20 in order. Light rays emitted from the light source 10 and spread from the points A and B are reproduced (reproduced) by the light rays defined by the pinhole mask 32 and the color filter 20. For this reason, the object V including the point images A and B is displayed in the back of the stereoscopic display device 100 to the observer V, and it looks as if the object X exists in the back of the stereoscopic display device 100. . Further, the stereoscopic display device 100 can perform stereoscopic display of the object X without reversing the depth. In the display device 100, a specific colored portion in the color filter 20 corresponds to one pinhole of the pinhole mask 32. Typically, a region where a colored portion corresponding to a certain pinhole is arranged does not overlap with a region where a colored portion corresponding to another pinhole is arranged.

  The display device 100 may display an object in front of the display device 100 as viewed from the observer V. Hereinafter, the stereoscopic display device 100 (recording and reproducing light rays) will be described with reference to FIG.

  As shown in FIG. 5A, the light scattered from the point A is collected at the point A ′ via the lens L to form a point image A ′, and the light scattered from the point B passes through the lens L. Collected by B ′, a point image B ′ is formed. The light from the point A is collected in the point image A ′ and then scattered from the point image A ′. Similarly, light from the point B is collected in the point image B ′ and then scattered from the point image B ′. Thus, an inverted image of the object X is formed by the lens L. A pinhole mask P and a color photodetector D are arranged between the lens L and the point images A ′ and B ′, and the color photodetector D detects light transmitted through the pinhole mask P. The pinhole of the pinhole mask P samples light that forms an inverted image, and the light beam is defined by the combination of the pinhole and the light detection unit.

  FIG. 5B shows a schematic diagram of the stereoscopic display device 100. The light source 10 is a surface light source, and the pinhole mask 32 has the same shape and arrangement pattern as the pinhole mask P shown in FIG. The color filter 20 reflects the detection result in the color photodetector D. The color filter 20 is provided on the main surface 42 a of the transmission member 40, and the pinhole mask 32 is provided on the main surface 42 b of the transmission member 40.

  Light rays emitted from the light source 10 and scattered from the point image A ′ are reproduced by the light rays defined by the colored portions of the color filter 20 and the pinholes of the pinhole mask 32. Similarly, a light ray emitted from the light source 10 and scattered from the point image B ′ is reproduced by another light ray defined by the colored portion of the color filter 20 and the pinhole of the pinhole mask 32. The different light rays only need to be defined so that at least one of the colored portion of the color filter 20 and the pinhole of the pinhole mask 32 is different, and one light ray that reproduces the point image A ′ is the point image B ′. And the same pinhole of the pinhole mask 32 may pass through. The light rays traveling through the point images A ′ and B ′ are reproduced (reproduced) light rays scattered from the point images A ′ and B ′. For this reason, to the observer V, an inverted image of the object X is displayed in front of the stereoscopic display device 100, and it looks as if the object X exists in front of the stereoscopic display device 100. In FIG. 5, an image is formed by the lens L at the time of recording the light beam. However, in the stereoscopic display device 100, the object X is not inverted without reversing the depth with respect to the recorded inverted image without forming the image. Three-dimensional display can be performed. Here, in order to simplify the explanation, an inverted image of the object X is formed by the lens L during recording, but an erect image may be formed by changing the lens system.

  Although not shown here, the display device 100 may display both an object that is visible behind the display device 100 and an object that is visible in front of the display device 100 as viewed from the viewer V. In addition, a specific coloring portion of the color filter 20 may be used for stereoscopic display of a specific object, and another coloring portion may be used for displaying a background or another object.

  In the above description, the color filter 20 is produced using the detection result obtained by detecting the light from the object X by the color photodetector D. However, the color filter 20 may be produced based on arithmetic processing. For example, the color filter 20 may be formed by calculating from a plurality of photographs having different shooting directions. Further, the transmissive member 40 may include another member in addition to the transparent substrate. For example, the transmissive member 40 may further include a viewing angle adjustment film having a significantly different transmittance depending on the viewing direction of the observer V.

  In the above-described stereoscopic display device, light is recorded and reproduced, thereby simplifying the stereoscopic display device 100. As described above, the sampled white light may be generated by a plurality of point light sources that each emit white light, or may be formed by a surface light source that emits white light and a pinhole mask. Good. In the display device 100, the light source 10 may be a surface light source or a point light source array in which a plurality of point light sources are arranged. In addition, although the three-dimensional display in the three-dimensional display apparatus 100 shown in FIG. 1 was demonstrated here with reference to FIGS. 2-5, the below-mentioned three-dimensional display apparatus performs a three-dimensional display similarly.

  FIG. 6A shows a schematic diagram of the display device 100 of the present embodiment. The color filter 20 and the pinhole mask 32 are configured to display a point image A behind the display device 100. Alternatively, as illustrated in FIG. 6B, the color filter 20 and the pinhole mask 32 may be configured to display a point image A in front of the display device 100.

  As shown in FIG. 7, in the stereoscopic display device 100 of the present embodiment, the color filter 20 is provided on the main surface 42a of the transmissive member 40, and the pinhole mask 32 is provided on the main surface 42b. In the pinhole mask 32, the pinholes are arranged at a predetermined pitch. Each pinhole is substantially circular. For example, when the main surfaces 42a and 42b are the same size as A3 (297 mm × 420 mm) or A4 (210 mm × 297 mm), the pinhole pitch is 1.5 mm or more and 2.5 mm or less, and the pinhole diameter is about 0.1 mm. The transmissive member 40 preferably has a thickness of 0.5 mm or more, for example. When the thickness of the transmissive member 40 is less than 0.5 mm, if the size of the stereoscopic display device 100 is not so large, display characteristics of at least one of depth, viewing zone angle, and resolution may not be sufficiently satisfied. .

  For example, the pinhole mask 32 is a black layer provided with fine holes at a predetermined pitch. The black layer may be formed from ink. For example, the ink is formed from an ultraviolet curable resin. Alternatively, the black layer may be formed by a stamp. Alternatively, the pinhole mask 32 may be provided with a hole in a metal plate that does not transmit light. In this case, the diameter of the hole is preferably increased as the distance from the light source 10 increases. Such a pinhole mask 32 functions as a white point light source together with the light source 10.

  In the display device 100, the light source 10 is a surface light source, but by providing the pinhole mask 32, a sampled light beam can be generated regardless of whether the light source 10 is a point light source array or a surface light source. Further, when the pinhole mask 32 is formed of a black plate, the observer V looks as if the object is displayed three-dimensionally on a black background.

  Here, the arrangement of the color filter 20 and the pinhole mask 32 will be described with reference to FIG. A specific colored portion in the color filter 20 corresponds to one pinhole of the pinhole mask 32. A point image A is formed at the intersection of rays defined by the pinhole of the pinhole mask 32 and the colored portion of the color filter 20. A point image A is formed by the light rays that have passed through the colored portions of the color filter 20.

  The stereoscopic display device 100 of this embodiment is manufactured as follows. As shown in FIG. 9A, a light source 10 that emits white light is prepared. Here, the light source 10 is a surface light source.

  As shown in FIG. 9B, a transmissive member 40 having main surfaces 42a and 42b is prepared. Next, as shown in FIG. 9C, the color filter 20 is printed on the main surface 42 a of the transmissive member 40. Printing is performed by, for example, an inkjet method. For example, the color filter 20 may be formed by directly printing the colored portion of the color filter 20 on the main surface 42 a of the transmissive member 40. Alternatively, the color filter 20 may be formed by printing a transparent member that holds the colored portion. Further, the pinhole mask 32 is printed on the main surface 42 b of the transmissive member 40. Printing is performed by, for example, an inkjet method.

  Thereafter, as shown in FIG. 9D, the color filter 20 and the pinhole mask 32 are arranged with respect to the light source 10. Both the color filter 20 and the pinhole mask 32 are provided on the transmission member 40, and the colored portions of the color filter 20 and the pinholes of the pinhole mask 32 are arranged in a predetermined positional relationship. In this way, the stereoscopic display device 100 can be manufactured.

  In the above description, both the color filter 20 and the pinhole mask 32 are printed, but the present invention is not limited to this. One of the color filter 20 and the pinhole mask 32 may be printed, and the other may be formed by another method. As described above, mass production can be easily performed by forming the color filter 20 and / or the pinhole mask 32 by printing.

  In the above description, at least one of the color filter 20 and the pinhole mask 32 is printed, but the present invention is not limited to this. At least one of the color filter 20 and the pinhole mask 32 may be detachably attached. In particular, the color filter 20 is preferably removable. When the color filter 20 corresponds to one still image, another still image can be displayed three-dimensionally by attaching another color filter 20 after peeling the color filter 20. Further, the pinhole mask 32 may be removable. Alternatively, at least one of the color filter 20 and the pinhole mask 32 may be printed on a detachable transparent member, and this transparent member may be attached to the transmissive member 40.

  In the above description, the object is displayed at the intersection of the light rays defined by the color filter 20 and the pinhole mask 32, but the present invention is not limited to this. Even in a strict sense, even if the light beams do not intersect, the light beam defined by the color filter 20 and the pinhole mask 32 substantially reproduces the light beam scattered from the object, so that the object moves even if the observer moves the viewpoint. Looks like.

  Further, in the stereoscopic display device 100, all light rays defined by the color filter 20 and the pinhole mask 32 may not correspond to the light rays scattered from the object. When displaying an object relatively distant from the stereoscopic display device 100, it is possible to reproduce light scattered from the object with a plurality of light rays defined by the color filter 20 and the pinhole mask 32, but the stereoscopic display device 100. When displaying an object relatively close to, there are few light rays that pass through the object among the light rays defined by the color filter 20 and the pinhole mask 32, and the object may not be displayed properly. In this case, it is preferable to display an object relatively close to the stereoscopic display device 100 by the multi-view parallax method. The color filter 20 and the pinhole mask 32 may be configured so as to give parallax to the observer by a part of the light rays defined by the coloring portion and the pinhole.

  As described above with reference to FIG. 1, the color filter 20, the pinhole mask 32, and the transmission member 40 are integrally formed as the light beam defining member 200. If the light beam defining member 200 is a surface light source 10 having a predetermined area, it can be combined with an arbitrary surface light source 10 to perform a three-dimensional display. For example, a general lighting device may be used as the surface light source 10, or a so-called television device may be used.

  The transmissive member 40 may have a plurality of transparent substrates. In FIG. 10, the schematic diagram of the three-dimensional display apparatus 100 of this embodiment is shown. Here, the transmissive member 40 includes a transparent substrate 40A, a barrier layer 50, and a transparent substrate 40B. The barrier layer 50 is provided between the transparent substrate 40A and the transparent substrate 40B, and the transparent substrate 40A, the barrier layer 50, and the transparent substrate 40B are laminated.

  The transparent substrate 40A has main surfaces 42a and 42c, and the transparent substrate 40B has main surfaces 42b and 42d. In the following description of the present specification, the transparent substrates 40A and 40B are also referred to as a first transparent substrate 40A and a second transparent substrate 40B, respectively. Here, the first transparent substrate 40A is arranged closer to the viewer V than the second transparent substrate 40B. Further, the main surface 42a of the transparent substrate 40A and the main surface 42d of the transparent substrate 40B are disposed closer to the viewer V than the main surface 42c of the transparent substrate 40A and the main surface 42b of the transparent substrate 40B, respectively. Also in the stereoscopic display device 100 shown in FIG. 10, the color filter 20 is provided on the main surface 42a of the transparent substrate 40A, and the pinhole mask 32 is provided on the main surface 42b of the transparent substrate 40B.

  The barrier layer 50 has a unit region that can modulate at least one of the intensity and color of light passing therethrough. The unit area of the barrier layer 50 is smaller than the colored portion of the color filter 20. In the display device 100, unnecessary light can be blocked by the barrier layer 50 even if different point light sources 10 a correspond to the same colored portion of the color filter 20. The barrier layer 50 is realized by a liquid crystal layer, for example. By such a barrier layer 50, depth (protruding), viewing zone angle, and resolution can be set appropriately. In FIG. 10, the stereoscopic display device 100 includes the two transparent substrates 40 </ b> A and 40 </ b> B. However, the stereoscopic display device 100 may include three or more transparent substrates 40 and adjacent to each transparent substrate 40. An optical element may be provided between the main surfaces 42 to be processed.

  In the stereoscopic display device 100 shown in FIG. 10, the barrier layer 50 provided between the transparent substrate 40A and the transparent substrate 40B is configured to be laminated with the transparent substrates 40A and 40B. It is not limited to this. The transparent substrates 40A and 40B are fixed by a fixing member that fixes the distance between them. Except for this fixing member, nothing may be provided between the transparent substrate 40A and the transparent substrate 40B. In this way, by disposing the transparent substrate 40A and the transparent substrate 40B substantially separately, the stereoscopic display device 100 capable of displaying a large jump distance can be manufactured at a relatively low cost.

  The stereoscopic display device 100 as described above is suitably used for a relatively large display device such as an advertising billboard or an amusement display. Note that the object on which stereoscopic display is performed may be the entire image displayed on the stereoscopic display device 100 or a part of the image.

[3D display device 2]
In FIG. 11, the schematic diagram of the three-dimensional display apparatus 100 of this embodiment is shown. The stereoscopic display device 100 includes a light source 10, a color filter 20, and a transmissive member 40. Note that the configuration of the stereoscopic display device 100 of the present embodiment has the same configuration as the stereoscopic display device described above with reference to FIGS. 1 to 10 except that the pinhole mask 32 is not provided. In order to avoid redundancy, redundant description is omitted.

  In the stereoscopic display device 100 of the present embodiment, the light source 10 has a plurality of point light sources 10a arranged in a matrix of a plurality of rows and a plurality of columns. Here, the point light source 10a is a light emitting diode (LED). By using an LED as the point light source 10a, stereoscopic display can be performed with high brightness.

  In the stereoscopic display device 100 of the present embodiment, the color filter 20 is provided on the main surface 42a of the transmissive member 40, and the shape of the color filter 20 is unlikely to change. For this reason, the position shift of the color filter 20 can be suppressed, and the replacement of the color filter 20 accompanying the shape change can be suppressed. In the stereoscopic display device 100 of the present embodiment, the color filter 20 may be printed on the main surface 42a of the transmissive member 40, and the color filter 20 may be detachably attached.

  FIG. 12A shows a schematic diagram of the display device 100. The light source 10 is a point light source array in which point light sources 10a are arranged in a matrix. Here, the point light source 10 a and the color filter 20 of the display device 100 are configured to display a point image A behind the display device 100. Alternatively, as illustrated in FIG. 12B, the light source 10 and the color filter 20 of the display device 100 may be configured to display a point image A in front of the display device 100.

  The arrangement of the point light source 10a and the color filter 20 will be described with reference to FIG. A specific colored portion in the color filter 20 corresponds to each point light source 10 a of the point light source array 10. A point image A is formed by light rays that have passed through the color filter 20 from the point light source 10a. A point image A is formed by the light rays that have passed through the colored portions of the color filter 20.

  In the stereoscopic display device 100 of the present embodiment, the light source 10 and the color filter 20 are configured such that an object is displayed at an intersection where light rays emitted from the light source 10 and defined by the colored portion of the color filter 20 intersect. Yes. In this manner, stereoscopic display can be performed by reproducing (reproducing) the light rays from the object.

  As shown in FIG. 14, when the light source 10 is a point light source array in which a plurality of point light sources 10a are arranged, the transmissive member 40 is provided with the color filter 20 on the main surface 42a and nothing on the main surface 42b. The light source 10 may be opposed to the main surface 42b of the transmissive member 40 through the air. However, the light source 10 may face the main surface 42b of the transmissive member 40 through an optical element (not shown).

  The stereoscopic display device 100 of this embodiment is manufactured as follows. As shown in FIG. 15A, a light source 10 that emits white light is prepared. Here, the light source 10 is a point light source array having a plurality of point light sources 10a arranged in a matrix.

  As shown in FIG. 15B, a transmissive member 40 having main surfaces 42a and 42b is prepared. Next, as shown in FIG. 15C, the color filter 20 is formed on the main surface 42 a of the transmission member 40. For example, the color filter 20 is printed directly on the main surface 42 a of the transmissive member 40.

  Thereafter, as shown in FIG. 15D, the light source 10 and the color filter 20 are arranged. The point light source 10a and the colored portion are arranged so as to have a predetermined positional relationship. In this way, the stereoscopic display device 100 can be manufactured.

  In order to avoid redundancy, overlapping description is omitted, but also in the stereoscopic display device 100 of the present embodiment, as described above with reference to FIG. The barrier layer 50 and the transparent substrate 40B may be included, and the depth (flying out), viewing zone angle, and resolution can be appropriately set by the barrier layer 50. Similarly, also in the stereoscopic display device 100 of the present embodiment, an object near the display device 100 may be displayed in a multi-eye parallax manner.

  Further, in the display device 100 shown in FIG. 11, nothing is provided on the main surface 42b of the transmission member 40, but the present invention is not limited to this. As shown in FIG. 16, a barrier layer 50 may be provided on the main surface 42 b of the transmissive member 40.

  Even when an LED is used as the point light source 10 a, the pinhole mask 32 may be provided on the main surface 42 b of the transmissive member 40. For example, the light emitted from the LED 10a may be reflected by the member that holds the LED 10a, and the contrast of the light incident on the transmissive member 40 may not be so high. In this case, the contrast can be improved by providing the pinhole mask 32 on the main surface 42 b of the transmissive member 40. Even if the LED 10a cannot be arranged with high accuracy, the provision of the pinhole mask 32 can improve the contrast and reproduce the light beam with the accuracy of the pinhole mask 32 (preferably the printing accuracy).

[3D display device 3]
In the above description, the color filter 20 is provided on the viewer V side with respect to the transmission member 40, but the present invention is not limited to this. The color filter 20 may be provided on the white light source 10 side with respect to the transmissive member 40.

  Hereinafter, the stereoscopic display device 100 of the present embodiment will be described with reference to FIG. The stereoscopic display device 100 includes a white light source 10, a color filter 20, an optical member 30, and a transmission member 40. In order to avoid redundancy, the description of the white light source 10, the color filter 20, and the transmissive member 40, which overlaps with the above-described stereoscopic display device, is omitted.

  Here, the white light source 10 is a surface light source. The transmission member 40 has main surfaces 42a and 42b, the main surface 42a of the transmission member 40 is an incident surface, and the main surface 42b of the transmission member 40 is an output surface. The color filter 20 is provided on the main surface 42 a of the transmissive member 40, and the optical member 30 is provided on the main surface 42 b of the transmissive member 40.

  In the stereoscopic display device 100 of the present embodiment, the color filter 20 is provided on the main surface 42a of the transmissive member 40, and the shape of the color filter 20 is unlikely to change. For this reason, the position shift of the color filter 20 can be suppressed, and the replacement of the color filter 20 accompanying the shape change can be suppressed.

  The color filter 20 has a plurality of colored portions that change white light into colored light. For example, the colored portion exhibits a color in which red, green, and blue are mixed at an arbitrary ratio.

  Each of the optical members 30 has a plurality of unit portions that define light rays together with the colored portions of the color filter 20. The optical member 30 is, for example, a pinhole mask or a lens array, and the unit part is, for example, a pinhole or a lens (convex lens).

  In the stereoscopic display device 100 of the present embodiment, the color filter 20 and the optical member 30 are configured so that the light rays defined by the coloring portions of the color filter 20 and the unit portions of the optical member 30 correspond to the light rays scattered from the object. ing. In this manner, stereoscopic display can be performed by reproducing (reproducing) the light rays from the object. In the stereoscopic display device 100 according to the present embodiment, the color filter 20 is provided on the main surface 42 a of the transmission member 40 and the optical member 30 is provided on the main surface 42 b, thereby the space between the color filter 20 and the optical member 30. Positioning can be easily performed.

  In order to avoid redundancy, overlapping descriptions are omitted, but also in the stereoscopic display device 100 of the present embodiment, the transmissive member 40 includes the transparent substrate 40A, the barrier layer, as described above with reference to FIG. 50 and the transparent substrate 40B, and the depth (jumping out), viewing zone angle, and resolution can be appropriately set by the barrier layer 50. Similarly, also in the stereoscopic display device 100 of the present embodiment, an object near the display device 100 may be displayed in a multi-eye parallax manner.

  In FIG. 18, the schematic diagram of the three-dimensional display apparatus 100 of this embodiment is shown. Here, a pinhole mask 32 is provided as the optical member 30. The pinhole mask 32 is provided with a plurality of pinholes. The pinhole mask 32 is provided on the viewer V side with respect to the color filter 20, and the pinhole mask 32 selectively transmits the colored light transmitted through the color filter 20. In the stereoscopic display device described above with reference to FIGS. 2 to 5, the color filter can be manufactured by directly using the detection result of the color photodetector D, but the stereoscopic display device shown in FIG. In 100, since the arrangement of the color filter 20 and the binhole mask 32 is reversed with respect to the light source 10, the color filter 20 is produced by converting the detection result of the color photodetector D.

  In the stereoscopic display device 100, the color filter 20 and the pinhole mask 32 are configured so that the light rays defined by the colored portions of the color filter 20 and the pinholes of the pinhole mask 32 correspond to the light rays scattered from the object. . In this manner, stereoscopic display can be performed by reproducing (reproducing) the light rays from the object. Also in the stereoscopic display device 100 of the present embodiment, the color filter 20 may be printed on the main surface 42a of the transmissive member 40, and the color filter 20 may be detachably attached. The pinhole mask 32 may be printed on the main surface 42b of the transmission member 40, and the pinhole mask 32 may be detachably attached.

  In the stereoscopic display device 100 shown in FIG. 18, the color filter 20, the pinhole mask 32, and the transmission member 40 are integrally formed as the light beam defining member 200. As described above, as long as the light beam defining member 200 is a surface light source 10 having a predetermined area, a three-dimensional display can be performed in combination with any surface light source 10.

  In FIG. 19, the schematic diagram of the three-dimensional display apparatus 100 of this embodiment is shown. Here, a lens array 34 is provided as the optical member 30. The lens array 34 refracts light rays in different directions according to the colored portion of the color filter 20. In this display device 100, the color filter 20 and the lens array 34 are arranged so that the focal point of each lens of the lens array 34 is located on the color filter 20, and the lens array 34 is emitted from the white light source 10 and the color filter. The light transmitted through the 20 colored portions is refracted so as to be emitted in parallel. Thus, each lens of the lens array 34 is used for light collimation.

  The lens array 34 is preferably formed integrally with the transmission member 40. Also, in the stereoscopic display device 100 shown in FIG. 19, the color filter 20 may be printed on the main surface 42a of the transmissive member 40, and the color filter 20 may be detachably attached.

  In the above description, the color filter 20 is directly provided on the main surface 42a of the transmission member 40, but the present invention is not limited to this. As the color filter 20, a color filter included in the liquid crystal panel may be used.

  FIG. 20 shows a schematic diagram of the display device 100. In the display device 100 shown in FIG. 20, the optical member 30 is provided on the main surface 42 b of the transparent member 40, and the display device 100 further includes a liquid crystal panel 60 having the color filter 20. The liquid crystal panel 60 is provided on the main surface 42 a of the transparent member 40. For example, the liquid crystal panel 60 may be used for a so-called liquid crystal display device.

  The liquid crystal panel 60 includes the light source 10 and a liquid crystal element 62. The light source 10 may be used as a so-called backlight. The liquid crystal element 62 includes a front substrate 62a, a rear substrate 62b, and a liquid crystal layer 62c provided between the front substrate 62a and the rear substrate 62b. Here, the color filter 20 is provided on the front substrate 62a. However, the color filter 20 may be provided on the back substrate 62b. By controlling the voltage applied to the liquid crystal layer 62c, the transmittance of the liquid crystal element 62 can be controlled, whereby the display device 100 can display a moving image three-dimensionally.

  Although a plurality of embodiments of the present invention have been described herein, the present invention is not limited to the above-described embodiments. As will be appreciated by those skilled in the art, different embodiments may be arbitrarily combined.

  According to the present invention, it is possible to suppress the position shift of the color filter, and thereby it is possible to perform appropriate stereoscopic display. The stereoscopic display device of the present invention is suitably used for a relatively large display device such as an advertising billboard or an amusement display.

DESCRIPTION OF SYMBOLS 10 White light source 20 Color filter 30 Optical member 32 Pinhole mask 34 Lens array 40 Transmission member 50 Barrier layer 60 Liquid crystal panel

Claims (11)

A stereoscopic display device for stereoscopically displaying an object,
A white light source that emits white light;
With color filters,
The color filter includes a plurality of coloring portions each changing the white light to colored light,
The white light source and the color filter are configured so that a light beam emitted from the white light source and transmitted through the colored portion of the color filter corresponds to a light beam scattered from the object,
The stereoscopic display device further includes a transmission member having a first main surface and a second main surface,
The color filter is a stereoscopic display device printed on the first main surface of the transmissive member. An optical member;
The optical member includes a plurality of unit portions each defining the light beam together with the colored portion of the color filter,
2. The stereoscopic display device according to claim 1, wherein the optical member and the color filter are configured such that light rays defined by the unit portion and the coloring portion correspond to light rays scattered from the object.   The stereoscopic display device according to claim 2, wherein the optical member includes a pinhole mask that selectively transmits the white light or the colored light.   The stereoscopic display device according to claim 3, wherein the pinhole mask is printed on the second main surface of the transmissive member.   The stereoscopic display device according to claim 2, wherein the optical member includes a lens array that defines the light beam so as to be refracted in different directions depending on the coloring portion.   The stereoscopic display device according to claim 2, wherein the optical member is provided on an observer side with respect to the transmission member.   The stereoscopic display device according to claim 1, wherein the color filter is provided on an observer side with respect to the transmissive member.   The stereoscopic display device according to claim 1, wherein the white light source has a point light source array in which a plurality of point light sources are arranged.   The stereoscopic display device according to claim 1, wherein the white light source includes a surface light source.   The stereoscopic display device according to claim 1, wherein the colored portion of the color filter corresponds to a still image. A method for manufacturing a stereoscopic display device for stereoscopically displaying an object,
Preparing a white light source that emits white light;
Arranging a color filter with respect to the white light source,
In the placing step,
The color filter includes a plurality of coloring portions each changing the white light to colored light,
The white light source and the color filter are configured so that a light beam emitted from the white light source and transmitted through the colored portion of the color filter corresponds to a light beam scattered from the object,
The manufacturing method of the stereoscopic display device is as follows:
Preparing a transmission member having a first main surface and a second main surface;
And a step of printing the color filter on the first main surface of the transmissive member.

Images