JP2012155345A - Optical imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical imaging device which can easily form a stereoscopic image in midair on the side of an observer who views an object.SOLUTION: An optical imaging device uses first and second light control panels C and D formed by arranging a plurality of band-shaped flat light reflection parts 22 and 23 at a constant pitch inside a transparent flat plate so that the reflection parts are perpendicular to a surface on one side of the transparent flat plate. One surface of the first light control panel C and one surface of the second light control panel D are opposed to each other with the flat light reflection parts 22 and 23 being perpendicular to each other. Light from an object N is incident on the flat light reflection part 22 of the first light control panel C, reflected light reflected at the flat light reflection part 22 is reflected again at the flat light reflection part 23 of the second light control panel D, and an image N' of the object N is formed on the opposite side of the optical imaging device 21.

Description

The present invention relates to an optical imaging apparatus that forms a stereoscopic image in the air.

As an optical imaging device that forms a three-dimensional image using light (scattered light) emitted from the object surface, an opaque panel provided with a large number of minutely transparent parts, and a minutely placed on the back of the opaque panel There has been proposed a stereoscopic image display device having an image display panel on which a large number of small images corresponding to a light transmitting portion are displayed (see, for example, Patent Documents 1 and 2). In addition, as a stereoscopic image display device that does not use optical means such as lenses, there has been proposed an imaging element in which a plurality of double-sided reflection bands having a width of several microns to several tens of microns are arranged so that adjacent reflection surfaces face each other. (For example, refer to Patent Document 3).

Patent Document 4 discloses a light-bending surface composed of a reflection-type plane-symmetric imaging element in which unit optical elements having two mirror elements perpendicular to each other are formed on a plurality of planes, and toward the light-bending surface. An image arranged on the observation side opposite to the mirror surface across the light beam bending surface is transmitted through the light beam bending surface and reflected by the mirror surface. Furthermore, an optical system has been proposed in which an image is formed at a position reflected on a virtual mirror that does not actually exist by being transmitted through a light-bending surface and moved to a plane-symmetrical position with respect to the light-bending surface of the mirror surface.

JP 7-56112 A JP-A-6-160770 JP 58-21702 A JP 2008-158114 A

However, in the inventions of Patent Documents 1 and 2, it is necessary to record a large number of small images in advance, and a great deal of labor is required to form an optical image. When an optical image is processed, an enormous amount of information is required, and there is a problem that data processing becomes difficult. Further, the invention of Patent Document 3 has a problem that scattered light from an object does not necessarily converge to one point after passing through the imaging element.
In addition, in the optical system described in Patent Document 4, it is extremely difficult to manufacture a light-bending surface composed of a reflection-type plane-symmetric imaging element, which hinders practical use.

The present invention has been made in view of such circumstances, and is relatively easy to manufacture, and an optical imaging apparatus capable of easily forming a three-dimensional image in the air on the side of an observer viewing an object, and an optical device using the same An object is to provide an imaging method.

An optical imaging apparatus according to a first invention that meets the above-described object is the first optical image forming apparatus in which a large number of strip-shaped planar light reflecting portions are arranged at a constant pitch perpendicularly to one surface of the transparent flat plate. The first and second light control panels are used, and one surface side of each of the first and second light control panels is configured to face each other with the planar light reflecting portions orthogonal to each other.
It should be noted that one surface side of the first and second light control panels is preferably arranged to face each other in parallel.
In this case, the elongated rectangular (strip-shaped) planar light reflecting portion of the first light control panel and the elongated rectangular planar light reflecting portion of the second light control panel are orthogonal to each other in the longitudinal direction. In addition, the planar light reflecting portion of the first light control panel and the planar light reflecting portion of the second light control panel also form orthogonal surfaces.

In the optical imaging apparatus according to the first aspect, the planar light reflecting portion of the first and second light control panels is a metal reflecting surface (for example, a thin plate of silver or aluminum, a plating layer, a vapor deposition layer, or the like). It is preferable that Further, the planar light reflecting portion may be a double-sided reflecting plate.

In the optical imaging apparatus according to the first aspect of the present invention, the first and second light control panels are each a transparent composite in which grooves having vertical surfaces extending in the thickness direction from one surface are formed at the constant pitch. The vertical plane is formed using a resin plate, and the vertical surface is the planar light reflecting portion that reflects light incident obliquely into the transparent synthetic resin plate, and is reflected from the planar light reflecting portion between the grooves. What formed the light passage surface which allows reflected light to pass through may be formed. Here, it is more preferable that the groove has a right-angled triangle cross section, and that a surface forming the hypotenuse of the right-angled triangle is subjected to a light shielding process or a scattered light process.

In addition, the first and second light control panels can be arranged in close contact with each other with a fixed gap in a state where the planar light reflecting portions of the first and second light control panels are orthogonal to each other. Here, for example, the fixed gap is preferably about 0.5 to 4 times the interval between adjacent planar light reflecting portions, but the present invention is not limited to this value. In addition, a clear image is acquired, so that the pitch of the planar light reflection part of the 1st, 2nd light control panel is made fine and the number of planar light reflection parts is increased.

In the optical imaging apparatus according to the first aspect of the present invention, the planar light reflecting portion is a double-sided reflector, and the plurality of planar light reflecting members respectively disposed in the first and second light control panels. The width of the part may gradually increase from the central part to the peripheral part.

In the optical imaging method according to the second aspect of the present invention, the first and second optical image forming methods according to the present invention are formed by arranging a large number of strip-shaped planar light reflecting portions in the transparent flat plate so as to be perpendicular to one surface of the transparent flat plate. The first light control panel and the first light control panel face each other with the planar light reflecting portion orthogonal to each other, and the planar light reflecting portion of the first light control panel faces the object. (Or a light source) is incident, the reflected light reflected by the planar light reflecting unit is reflected again by the planar light reflecting unit of the second light control panel, and the image of the object is reflected by the optical imaging device. Image on the opposite side.

In the optical imaging method according to the second aspect of the present invention, it is preferable that the planar light reflecting portions are arranged on the first and second light control panels at a constant pitch. It should be noted that the present invention is applied even when the distance between the planar light reflecting portions arranged in the first and second light control panels is not constant.

In the optical imaging method according to the second aspect of the present invention, the planar light reflecting section may be a double-sided reflecting plate (a metal plate, a metal plating layer, or a metal vapor deposition layer may be used).

In the optical imaging method according to the second aspect of the invention, the light from the object is reflected an odd number of times by the double-sided reflecting plate facing one or both of the first and second light control panels. The present invention is applied even when an image of the object is formed.

In the optical imaging apparatus according to the first aspect of the present invention, the first and second light controls are formed by arranging a large number of strip-shaped planar light reflecting portions arranged at a constant pitch inside the transparent flat plate and perpendicular to the surface on one side. Since one surface of each panel faces each other with the respective plane light reflecting portions orthogonal to each other, light emitted from an object arranged on one side of this optical imaging device Converge to the side and form an image.
Further, this optical imaging apparatus uses two light control panels formed by arranging a large number of strip-shaped planar light reflecting portions arranged at a constant pitch perpendicularly to the surface on one side inside a transparent flat plate. Since the control panel is easy to manufacture, it can be manufactured inexpensively.

In particular, in the optical imaging apparatus according to the first invention, when the planar light reflecting portions of the first and second light control panels are metal reflecting surfaces, the incident angle of light reflected by the planar light reflecting portion is limited. Therefore, a lot of reflected light can be obtained, and a bright object image can be obtained by forming an image in a wide range.

In the optical imaging apparatus according to the first invention, the first and second light control panels are each a transparent synthetic resin plate in which grooves having vertical surfaces extending in the thickness direction from one surface are formed at a constant pitch. The vertical plane is a planar light reflecting portion that reflects light incident obliquely into the transparent synthetic resin plate, and the light passing surface that allows the reflected light reflected from the planar light reflecting portion to pass between the grooves Since the first and second light control panels can be manufactured with a mold, the first and second light control panels can be manufactured relatively inexpensively.
When the groove has a right-angled triangle cross section and the surface forming the hypotenuse of the right-angled triangle is subjected to a light shielding process or a scattered light process, the light reflection surface is determined, so that ghost or noise is reduced. An object image can be obtained in a state where

Furthermore, in the optical imaging apparatus according to the first invention, the planar light reflecting portion is a double-sided reflecting plate, and the widths of a large number of planar light reflecting portions respectively disposed in the first and second light control panels. However, by gradually increasing from the central part to the peripheral part, it is possible to collect the light hitting the peripheral part of the first and second light control panels, and a brighter image can be obtained.

In the optical imaging method according to the second aspect of the present invention, the first and second optical imaging methods according to the present invention are formed by arranging a large number of strip-shaped planar light reflecting portions in the transparent flat plate so as to be perpendicular to one surface of the transparent flat plate. Using the light control panel, one surface side of each of the first and second light control panels face each other in a state where the planar light reflecting portions are orthogonal to each other, and the planar light reflecting portion of the first light control panel is placed from the object. Since the reflected light reflected by the planar light reflecting portion is reflected again by the planar light reflecting portion of the second light control panel, the object image is connected to the opposite side of the optical imaging device. Can be imaged.
According to this method, it is easy to manufacture the first and second light control panels with high accuracy, and the image of the object can be reproduced in the space at a lower cost.

In particular, in the optical imaging method according to the second aspect of the invention, when the planar light reflecting portion is constituted by a double-sided reflector, incident light (light from an object) can be reflected an odd number of times, and a reproduced image Can be made brighter.

(A) is a plan view of the optical imaging apparatus according to the first embodiment of the present invention, (B) is an FF sectional view, and (C) is a GG sectional view. It is a perspective view of the same optical imaging device. It is explanatory drawing of object image formation by the reflected light obtained by reflecting with the planar light reflection part of each light control panel of the optical imaging device. It is a top view of the optical imaging device which concerns on the 2nd Embodiment of this invention. It is a perspective view of the same optical imaging device. It is explanatory drawing of the object image formation by the reflected light obtained by continuously reflecting with the planar light reflection part of each light control panel of the optical imaging device. It is explanatory drawing of the optical imaging device which concerns on the 3rd Embodiment of this invention.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.

As shown in FIGS. 1 and 2, the optical imaging apparatus 10 according to the first embodiment of the present invention is an example of a transparent flat plate, and two transparent synthetic resin plates having a thickness of 0.5 to 10 mm. (For example, an acrylic resin plate) A large number of strip-shaped planar light reflecting portions 11 and 12 are arranged at a constant pitch (for example, 0.1 to 1 mm) perpendicular to one surface of each transparent synthetic resin plate. Using the formed first light control panel A (hereinafter simply referred to as “light control panel A”) and second light control panel B (hereinafter simply referred to as “light control panel B”), the light control panels A and B The flat light reflecting portions 11 and 12 are orthogonal to each other and are in close contact with each other. This will be described in detail below.

In the light control panels A and B, grooves 13 and 14 having a right-angled triangular cross section each having a vertical surface extending in the thickness direction from one surface of the transparent synthetic resin plate are the same as the pitch of the planar light reflecting portions 11 and 12. It is formed at a predetermined pitch. Note that the vertical surfaces of the grooves 13 and 14 are planar light reflecting portions 11 and 12 that reflect light incident obliquely into the light control panels A and B, respectively. Between the grooves 13 and 14, light transmitting portions 15 and 16 constituting light passing surfaces through which the reflected light reflected from the planar light reflecting portions 11 and 12 pass are formed. The vertical surfaces of the grooves 13 and 14 may be formed with a metal (for example, silver) plating layer or a metal vapor deposition layer (which constitutes a metal reflection surface).

The light control panels A and B can be manufactured by press molding using a mold, but are preferably manufactured by injecting a transparent synthetic resin into a mold having a predetermined shape and solidifying it. The grooves 13 and 14 have a base shape formed in advance in the mold, and are formed on one surface of the light control panels A and B when the light control panels A and B are manufactured. The surface of the mold part forming the slopes 19 and 20 of the grooves 13 and 14 is subjected to, for example, a shot blasting process or a satin treatment for forming an uneven portion of 3 to 50 μm, thereby forming the slopes 19 and 20 of the grooves 13 and 14. Is formed with convex and concave portions to which the concave and convex portions of the mold are transferred and subjected to the scattered light treatment.
In this embodiment, the end of the planar light reflecting portion 11 of the light control panel A and the end of the planar light reflecting portion 12 of the light control panel B are arranged in contact with each other.

Here, as shown in FIG. 2, the width w of the planar light reflecting portions 11 and 12 is, for example, 0.5 p or more and 3 p or less with respect to the pitch p of the planar light reflecting portions 11 and 12 (grooves 13 and 14). (Preferably 0.9p to 1.1p, more preferably p). When the width of the planar light reflecting portions 11 and 12 exceeds 3p, the light reflected by the planar light reflecting portions 11 and 12 is scattered by the slopes 19 and 20, and a part of the scattered light is reflected again by the planar light reflecting portions 11 and 12. Repeatedly, a clear image cannot be obtained. On the other hand, when the width of the planar light reflecting portions 11 and 12 is less than 0.5p, the light reflected by the planar light reflecting portions 11 and 12 is reduced and a clear image cannot be obtained.

Next, the operation and operation of the optical imaging apparatus 10 according to the first embodiment will be described with reference to FIGS. In FIG. 3, in order to clearly show the light reflection state in the light control panels A and B of the optical imaging apparatus 10, the light control panel on the left side with respect to the object M and the object image M ′ in a side view is shown. In the right light control panel, the right light control panels A and B are shown rotated by 90 degrees in the same plane with respect to the left light control panels A and B. Since the object image M ′ is obtained when the light is reflected twice in succession by the vertical planar light reflecting portion 11 of the light control panel A and the vertical planar light reflecting portion 12 of the light control panel B, the light control of the optical imaging device is performed. The panels A and B are divided into left and right sides when viewed from the side, and the object image is obtained even when the right light control panels A and B are rotated 90 degrees with respect to the left light control panels A and B in the same plane. Is obtained.

Light emitted from the object M arranged on the other side of the light control panel A of the optical imaging apparatus 10 (the side on which the planar light reflecting portion 11 is not formed) is inclined obliquely on the other surface of the light control panel A. When incident, the incident light enters the light control panel A and travels. Here, since air exists in the grooves 13 and 14 having a right-angled triangular section (outer region of the vertical surface), the light refractive index nm in the light control panel (inner region of the vertical surface) is It is larger than the outer region, that is, the optical refractive index na of air. Therefore, when light traveling in the light control panel A is incident on the vertical surface at an incident angle θ, the point a in the vertical surface is an angle that exceeds the angle θc that satisfies the relationship sin θc = nm / na. In this case, total reflection of light occurs at point a in the vertical plane, and at this time, the vertical plane becomes the planar light reflecting portion 11.

When the light totally reflected by the vertical surface of the light control panel A reaches the light transmission part 15, the light control panel A and the light control panel B are in close contact with each other. A part of the light totally reflected by the vertical surface of the light control panel A enters the light control panel B, and the rest is scattered and attenuated by the slope 19 subjected to the scattered light processing. The light that has entered the light control panel B travels in the light control panel B and reaches the vertical plane of the groove 14 having a right-angled triangular section. The vertical surface acts as the planar light reflecting portion 12 only for the light incident on the point b in the vertical surface at an incident angle causing total reflection among the light reaching the vertical surface of the groove 14 and totally reflected. The light further travels in the light control panel B, and is emitted to the outside from the surface on the other side (the side on which the planar light reflecting portion 12 is not formed) in the light control panel B.

As shown in FIGS. 1 and 3, light incident on the vertical surface of the light control panel A with an incident angle of less than θc is refracted on the vertical surface and enters the groove 13, and some of the light is scattered light. The light is scattered and attenuated by the slope 19 that has been processed, and the remaining portion passes through the light transmitting portion 16 of the light control panel B and enters the light control panel B. Of the light that has entered the light control panel B, the light that is totally reflected by the vertical surface of the groove 14 and the light that travels in the light control panel B travels to the other side of the light control panel B. It is emitted from the surface of the outside. Further, the light incident on the vertical surface of the groove 13 of the light control panel A with the incident angle θc is reflected by the vertical surface of the groove 13 and becomes light along the vertical surface. 16 enters the light control panel B. Of the light that has entered the light control panel B, a part of the light is scattered and attenuated by the inclined surface 20 of the groove 14 that has been subjected to the scattered light treatment, and the remaining part is emitted from the other surface of the light control panel B to the outside. Is done. Further, the light enters directly into the light control panel B from the light control panel A via the light passing portions 15 and 16, travels through the light control panel B, and is emitted to the outside from the other surface of the light control panel B. There is also light.

Here, since the planar light reflecting portions 11 and 12 are disposed in a state of being orthogonally opposed to each other, they travel in the light control panel B and are emitted to the outside from the other surface of the light control panel B. Of the light, incident light incident on the planar light reflecting portion 11 is reflected at the point a of the planar light reflecting portion 11 for the first time, and the reflected light is reflected at the point b of the planar light reflecting portion 12 for the second time. When this happens, the second reflected light is radiated at the same angle as the incident angle of the incident light incident on the planar light reflecting portion 11. For this reason, among the light incident on the optical imaging apparatus 10 from the object M, the reflected light continuously reflected by the planar light reflecting portions 11 and 12 is in a symmetrical position with the object M across the optical imaging apparatus 10. It converges and an object image M ′ is generated at a symmetrical position with respect to the object M across the optical imaging apparatus 10.

On the other hand, after passing through the groove 13 of the light control panel A, the light enters the light control panel B, proceeds to the other side of the light control panel B, and is emitted to the outside from the other side surface. The light enters the vertical surface of the groove 13 at an incident angle θc, enters the light control panel B as light along the vertical surface of the groove 13, travels to the other side of the light control panel B, and travels from the other surface to the outside. The emitted light and the light that directly enters the light control panel B from the light control panel A, travels through the light control panel B, and is emitted to the outside from the other surface of the light control panel B are both The incident light entering the light control panel A is not reflected at the same angle. For this reason, the light emitted to the outside from the other surface of the light control panel B does not intersect and an image is not formed.

As shown in FIGS. 4 and 5, the optical imaging device 21 according to the second embodiment of the present invention includes a large number of strips in the vertical direction in the thickness direction of the transparent flat plate inside the two transparent flat plates. The first light control panel C (hereinafter simply referred to as “light control panel C”) and the second light control panel D (which are formed by arranging the planar light reflecting portions 22 and 23 made of metal reflecting surfaces at a constant pitch. Hereinafter, simply referred to as “light control panel D”), one surface side of each of the light control panels C and D is brought into close contact with the planar light reflecting portions 22 and 23 facing each other. This will be described in detail below.

Each of the light control panels C and D has a constant thickness in which a metal reflecting surface (and thus a double-sided reflecting plate) made of a deposited layer (or plating layer) of aluminum or silver, which is an example of a metal, is formed on one surface side. A large number of plate-like transparent synthetic resin plates (for example, acrylic resin plates) or glass plates are laminated so that the metal reflection surface is arranged on one side, and a laminate is produced. The light control panels C and D are manufactured by cutting so that a cut surface perpendicular to the surface is formed. And the thickness of a transparent synthetic resin board or a glass plate is equivalent to the pitch of the plane light reflection parts 22 and 23, and the thickness of the light control panels C and D is determined by the thickness at the time of cutting out from a laminated body.

Here, the thickness at the time of cutting needs to be adjusted according to the intensity of the light control panels C and D and the vertical and horizontal dimensions of the light control panels C and D, and is, for example, 0.5 to 10 mm. . Here, the width of the planar light reflecting portions 22 and 23 is, for example, 0.5q to 3q (preferably 0.9q to 1.1q, more preferably) with respect to the pitch q of the planar light reflecting portions 22 and 23. q). When the width of the planar light reflecting portions 22 and 23 exceeds 3q, the light reflected by the planar light reflecting portions 22 and 23 is reflected by the adjacent planar light reflecting portions 22 and 23 and again reflected by the planar light reflecting portions 22 and 23. Repeatedly, a clear image cannot be obtained. On the other hand, when the widths of the planar light reflecting portions 22 and 23 are less than 0.5 q, the light reflected by the planar light reflecting portions 22 and 23 is reduced and a clear image cannot be obtained. The light control panels C and D are fixed to each other by a restraining member (for example, an adhesive, a heat seal, a screw, etc.) that is not shown, in close contact with each other.

Subsequently, the operation of the optical imaging apparatus 21 according to the second embodiment of the present invention will be described.
As shown in FIGS. 4 to 6, the light emitted from the object N arranged on the other side (the non-contact side with the light control panel D) of the light control panel C of the optical imaging device 21 is the light control panel C. Is incident obliquely on the other side surface, the incident light enters the light control panel C and is reflected at the point c of the planar light reflecting portion 22. Then, the reflected light reflected by the planar light reflecting portion 22 passes through the surface on one side of the light control panel D (the contact side with the light control panel C) from the surface on one side of the light control panel C, and the light. Enter the control panel D. Here, of the light that has entered the light control panel D, a part of the light is reflected at the point d of the planar light reflecting portion 23 of the light control panel D and further travels through the light control panel D to control the light. The light is discharged from the other side of the panel D to the outside. Further, a part of the remaining light travels in the light control panel D and is emitted to the outside from the other surface of the light control panel D.

Here, since the planar light reflecting portions 22 and 23 are arranged in a state of being orthogonally opposed to each other, they travel in the light control panel D and are emitted to the outside from the other surface of the light control panel D. Of the light, incident light incident on the planar light reflecting portion 22 is reflected at the point c of the planar light reflecting portion 22 for the first time, and the reflected light is reflected at the point d of the planar light reflecting portion 23 for the second time. When this happens, the second reflected light becomes parallel to the incident light incident on the planar light reflecting portion 22 in plan view (see FIG. 4). For this reason, among the light incident on the optical imaging device 21 from the object N, the reflected light continuously reflected by the planar light reflecting portions 22 and 23 is in a symmetrical position with the object N across the optical imaging device 21. It converges and an object image N ′ is generated at a symmetrical position with respect to the object N across the optical imaging device 21.

On the other hand, light that is reflected by the planar light reflecting portion 22 of the light control panel C, enters the light control panel D, travels through the light control panel D, and is emitted to the outside from the other surface, the light control panel C. The light that enters the light control panel C, enters the light control panel D, enters the light control panel D, and travels through the light control panel D and is emitted from the other side to the light control panel C. The incident light is not parallel to the incident light in plan view. For this reason, the light emitted to the outside from the other surface of the light control panel D does not intersect and an image is not formed.
In the optical imaging device 21, since the planar light reflecting portions 22 and 23 are metal reflecting surfaces, the incident angle of light reflected by the planar light reflecting portions 22 and 23 is not limited, and the light reflection angle is arbitrary. For this reason, an image can be formed at a wider range of angles than the reflecting surface using the principle of “total reflection of matter”.

FIG. 7 shows an optical imaging apparatus 26 according to a third embodiment of the present invention. As shown in FIG. 7, a first light control panel E (hereinafter simply referred to as “light control panel E”) and And a second light control panel F (hereinafter simply referred to as a light control panel F) in contact therewith. The light control panel E is provided with a number of long planar light reflecting portions 27 made of double-sided reflectors in parallel, and the light control panel F has a number of long planar light reflecting portions 28 made of double-sided reflectors in parallel. Is provided. The plane light reflecting portions 27 and 28 are erected in the same direction. Accordingly, the planar light reflecting portions 27 and 28 are arranged perpendicular to the contact surface 29 between the light control panel E and the light control panel F.

The longitudinal direction of the planar light reflecting portion 27 and the longitudinal direction of the planar light reflecting portion 28 are orthogonal to each other. These planar light reflecting portions 27 and 28 are embedded at a predetermined pitch in a transparent resin (for example, acrylic) or glass as in the optical imaging device 21 according to the second embodiment.
In this embodiment, the planar light reflecting portions 27 and 28 in the light control panels E and F gradually increase in height (width) from the central portion toward the peripheral portion. , F has a circular cross section on one side.

Therefore, in this embodiment, the light (incident light) emitted from the light source P is reflected once by the planar light reflecting unit 27 in the center of the light control panel E, and the planar light reflecting unit 28 of the light control panel F is reflected once. And converges to the image point P ′. In addition, the light incident on the planar light reflecting portion 27 of the high portion in the peripheral portion of the light control panel F is internally reflected an odd number of times and enters the light control panel F, and the light control panel F has an odd number of times ( Once), the light is reflected and converges at or near the image point P ′. On the other hand, the light reflected by the light control panel E or the light control panel F an even number of times does not converge at the imaging point P ′.
Therefore, although it is difficult for the optical imaging devices 10 and 21 to collect the light at the peripheral portion of the light control panel, the optical imaging device 26 can collect a part of the light hitting the peripheral portion of the light control panel. .

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.
For example, in the first embodiment, optical imaging is performed by bringing one surface side of each of the first and second light control panels on which the planar light reflecting portions are formed face to face so that the planar light reflecting portions are orthogonal to each other. Although the apparatus is configured, a gap may be formed between the first and second light control panels. Here, the width of the gap can be, for example, 100 times or less the width of the band-shaped planar light reflecting portion.

In the second embodiment, the metal reflection surface is formed on one side of the transparent synthetic resin plate, but the metal reflection surface may be formed on both side surfaces of the transparent synthetic resin plate or the glass plate. And a laminated body is produced by laminating a large number of transparent synthetic resin plates or glass plates having metal reflecting surfaces formed on both side surfaces, and cut-out surfaces perpendicular to the respective metal reflecting surfaces are formed from this laminated body. Thus, the first and second light control panels can be formed by cutting out.
Furthermore, in the first to third embodiments, the pitch of the planar light reflecting portion of the first light control panel and the pitch of the planar light reflecting portion of the second light control panel B are the same. The pitch of the planar light reflecting portions of the light control panel may be different from the pitch of the planar light reflecting portions of the second light control panel.
Furthermore, in each embodiment, the space | interval (pitch) of the planar light reflection part in a light control panel does not necessarily need to be the same.
Further, a light shielding process can be applied to the slope of the groove formed in the light control panel.

In the optical imaging device and the optical imaging method using the optical imaging device according to the present invention, a plurality of strip-shaped planar light reflecting portions are formed in a transparent flat plate so as to be arranged perpendicularly to one surface at a constant pitch. Since one surface side of each of the first and second light control panels faces each other with the respective planar light reflecting portions orthogonal to each other, the light emitted from the object disposed on one side of the optical imaging device is Then, it converges on the other side of the optical imaging device and forms an image. Therefore, a stereoscopic image can be projected in the space, and can be applied to a stereoscopic display device, a game machine, a game machine, an advertising tower, and the like.
Furthermore, since the structure is simple, an inexpensive optical imaging apparatus can be provided.

DESCRIPTION OF SYMBOLS 10: Optical imaging device, 11, 12: Plane light reflection part, 13, 14: Groove, 15, 16: Light transmission part, 19, 20: Slope, 21: Optical imaging device, 22, 23: Plane light reflection Part, 26: optical imaging device, 27, 28: planar light reflecting part, 29: contact surface, A, C, E: first light control panel, B, D, F: second light control panel

The present invention relates to an optical imaging apparatus that forms a stereoscopic image in the air.

As an optical imaging device that forms a three-dimensional image using light (scattered light) emitted from the object surface, an opaque panel provided with a large number of minutely transparent parts, and a minutely placed on the back of the opaque panel There has been proposed a stereoscopic image display device having an image display panel on which a large number of small images corresponding to a light transmitting portion are displayed (see, for example, Patent Documents 1 and 2). In addition, as a stereoscopic image display device that does not use optical means such as lenses, there has been proposed an imaging element in which a plurality of double-sided reflection bands having a width of several microns to several tens of microns are arranged so that adjacent reflection surfaces face each other. (For example, refer to Patent Document 3).

Patent Document 4 discloses a light-bending surface composed of a reflection-type plane-symmetric imaging element in which unit optical elements having two mirror elements perpendicular to each other are formed on a plurality of planes, and toward the light-bending surface. An image arranged on the observation side opposite to the mirror surface across the light beam bending surface is transmitted through the light beam bending surface and reflected by the mirror surface. Furthermore, an optical system has been proposed in which an image is formed at a position reflected on a virtual mirror that does not actually exist by being transmitted through a light-bending surface and moved to a plane-symmetrical position with respect to the light-bending surface of the mirror surface.

JP 7-56112 A JP-A-6-160770 JP 58-21702 A JP 2008-158114 A

However, in the inventions of Patent Documents 1 and 2, it is necessary to record a large number of small images in advance, and a great deal of labor is required to form an optical image. When an optical image is processed, an enormous amount of information is required, and there is a problem that data processing becomes difficult. Further, the invention of Patent Document 3 has a problem that scattered light from an object does not necessarily converge to one point after passing through the imaging element.
In addition, in the optical system described in Patent Document 4, it is extremely difficult to manufacture a light-bending surface composed of a reflection-type plane-symmetric imaging element, which hinders practical use.

The present invention has been made in view of such circumstances, a relatively manufacture easily, providing an optical imaging equipment capable of easily forming a three-dimensional image in space of the viewer-side viewing objects Objective.

An optical imaging apparatus according to the present invention that meets the above-described object is provided with a first and a plurality of strip-shaped planar light reflecting portions arranged at a constant pitch perpendicular to one surface of the transparent flat plate inside the transparent flat plate. A second light control panel is used, and one surface side of each of the first and second light control panels is configured to face each other with the planar light reflecting portions orthogonal to each other.
It should be noted that one surface side of the first and second light control panels is preferably arranged to face each other in parallel. In this case, the elongated rectangular (strip-shaped) planar light reflecting portion of the first light control panel and the elongated rectangular planar light reflecting portion of the second light control panel are orthogonal to each other in the longitudinal direction. In addition, the planar light reflecting portion of the first light control panel and the planar light reflecting portion of the second light control panel also form orthogonal surfaces.

In the optical imaging apparatus according to the present invention, the planar light reflecting portion of the first and second light control panels is a metal reflecting surface (for example, a thin plate of silver or aluminum, a plating layer, a vapor deposition layer, or the like). It is preferable. Further, the planar light reflecting portion may be a double-sided reflecting plate.

In addition, the first and second light control panels can be arranged in close contact with each other with a fixed gap in a state where the planar light reflecting portions of the first and second light control panels are orthogonal to each other. Here, for example, the fixed gap is preferably about 0.5 to 4 times the interval between adjacent planar light reflecting portions, but the present invention is not limited to this value. In addition, a clear image is acquired, so that the pitch of the planar light reflection part of the 1st, 2nd light control panel is made fine and the number of planar light reflection parts is increased.

Further, in the optical imaging apparatus according to the present invention, the planar light reflecting portion is a double-sided reflecting plate, and a plurality of the planar light reflecting portions respectively disposed in the first and second light control panels. The width may gradually increase from the central part to the peripheral part.

In the optical imaging apparatus according to the present invention, the first and second light control panels are formed by arranging a large number of strip-shaped planar light reflecting portions arranged at a constant pitch inside the transparent flat plate perpendicularly to the surface on one side. Since each one surface side faces each other with the respective plane light reflecting portions orthogonal to each other, the light emitted from the object arranged on one side of the optical imaging device is transmitted to the other side of the optical imaging device. It converges and forms an image.
Further, this optical imaging apparatus uses two light control panels formed by arranging a large number of strip-shaped planar light reflecting portions arranged at a constant pitch perpendicularly to the surface on one side inside a transparent flat plate. Since the control panel is easy to manufacture, it can be manufactured inexpensively.

In particular, in the optical imaging apparatus according to the present invention, when the planar light reflecting portions of the first and second light control panels are metal reflecting surfaces, there is no limitation on the incident angle of light reflected by the planar light reflecting portion. Since a lot of reflected light can be obtained, a bright object image is obtained by forming an image in a wide range.

Furthermore, in the optical imaging device according to the present invention, the planar light reflecting portion is a double-sided reflector, and the widths of the many planar light reflecting portions respectively disposed in the first and second light control panels are: By gradually increasing from the central part to the peripheral part, it is possible to collect light hitting the peripheral part of the first and second light control panels, and a brighter image can be obtained.

(A) is a plan view of an optical imaging apparatus according to a reference example of the present invention, (B) is an FF sectional view, and (C) is a GG sectional view. It is a perspective view of the same optical imaging device. It is explanatory drawing of object image formation by the reflected light obtained by reflecting with the planar light reflection part of each light control panel of the optical imaging device. 1 is a plan view of an optical imaging apparatus according to a first embodiment of the present invention. It is a perspective view of the same optical imaging device. It is explanatory drawing of the object image formation by the reflected light obtained by continuously reflecting with the planar light reflection part of each light control panel of the optical imaging device. It is explanatory drawing of the optical imaging device which concerns on the 2nd Embodiment of this invention.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.

As shown in FIGS. 1 and 2, an optical imaging apparatus 10 according to a reference example of the present invention is an example of a transparent flat plate, and two transparent synthetic resin plates (for example, acrylic resin) having a thickness of 0.5 to 10 mm. A plurality of strip-shaped planar light reflecting portions 11 and 12 arranged at a constant pitch (for example, 0.1 to 1 mm) perpendicularly to one surface of each transparent synthetic resin plate. The light control panel A (hereinafter simply referred to as “light control panel A”) and the second light control panel B (hereinafter simply referred to as “light control panel B”) are used. The flat light reflecting portions 11 and 12 are orthogonal to each other and are in close contact with each other. This will be described in detail below.

In the light control panels A and B, grooves 13 and 14 having a right-angled triangular cross section each having a vertical surface extending in the thickness direction from one surface of the transparent synthetic resin plate are the same as the pitch of the planar light reflecting portions 11 and 12. It is formed at a predetermined pitch. Note that the vertical surfaces of the grooves 13 and 14 are planar light reflecting portions 11 and 12 that reflect light incident obliquely into the light control panels A and B, respectively. Between the grooves 13 and 14, light transmitting portions 15 and 16 constituting light passing surfaces through which the reflected light reflected from the planar light reflecting portions 11 and 12 pass are formed. The vertical surfaces of the grooves 13 and 14 may be formed with a metal (for example, silver) plating layer or a metal vapor deposition layer (which constitutes a metal reflection surface).

The light control panels A and B can be manufactured by press molding using a mold, but are preferably manufactured by injecting a transparent synthetic resin into a mold having a predetermined shape and solidifying it. The grooves 13 and 14 have a base shape formed in advance in the mold, and are formed on one surface of the light control panels A and B when the light control panels A and B are manufactured. The surface of the mold part forming the slopes 19 and 20 of the grooves 13 and 14 is subjected to, for example, a shot blasting process or a satin treatment for forming an uneven portion of 3 to 50 μm, thereby forming the slopes 19 and 20 of the grooves 13 and 14. Is formed with convex and concave portions to which the concave and convex portions of the mold are transferred and subjected to the scattered light treatment.
In this reference example , the end of the planar light reflecting portion 11 of the light control panel A and the end of the planar light reflecting portion 12 of the light control panel B are disposed in contact with each other.

Here, as shown in FIG. 2, the width w of the planar light reflecting portions 11 and 12 is, for example, 0.5 p or more and 3 p or less with respect to the pitch p of the planar light reflecting portions 11 and 12 (grooves 13 and 14). (Preferably 0.9p to 1.1p, more preferably p). When the width of the planar light reflecting portions 11 and 12 exceeds 3p, the light reflected by the planar light reflecting portions 11 and 12 is scattered by the slopes 19 and 20, and a part of the scattered light is reflected again by the planar light reflecting portions 11 and 12. Repeatedly, a clear image cannot be obtained. On the other hand, when the width of the planar light reflecting portions 11 and 12 is less than 0.5p, the light reflected by the planar light reflecting portions 11 and 12 is reduced and a clear image cannot be obtained.

Next, the operation and operation of the optical imaging apparatus 10 according to the reference example will be described with reference to FIGS. In FIG. 3, in order to clearly show the light reflection state in the light control panels A and B of the optical imaging apparatus 10, the light control panel on the left side with respect to the object M and the object image M ′ in a side view is shown. In the right light control panel, the right light control panels A and B are shown rotated by 90 degrees in the same plane with respect to the left light control panels A and B. Since the object image M ′ is obtained when the light is reflected twice in succession by the vertical planar light reflecting portion 11 of the light control panel A and the vertical planar light reflecting portion 12 of the light control panel B, the light control of the optical imaging device is performed. The panels A and B are divided into left and right sides when viewed from the side, and the object image is obtained even when the right light control panels A and B are rotated 90 degrees with respect to the left light control panels A and B in the same plane. Is obtained.

Light emitted from the object M arranged on the other side of the light control panel A of the optical imaging apparatus 10 (the side on which the planar light reflecting portion 11 is not formed) is inclined obliquely on the other surface of the light control panel A. When incident, the incident light enters the light control panel A and travels. Here, since air exists in the grooves 13 and 14 having a right-angled triangular section (outer region of the vertical surface), the light refractive index nm in the light control panel (inner region of the vertical surface) is It is larger than the outer region, that is, the optical refractive index na of air. Therefore, when light traveling in the light control panel A is incident on the vertical surface at an incident angle θ, the point a in the vertical surface is an angle that exceeds the angle θc that satisfies the relationship sin θc = nm / na. In this case, total reflection of light occurs at point a in the vertical plane, and at this time, the vertical plane becomes the planar light reflecting portion 11.

When the light totally reflected by the vertical surface of the light control panel A reaches the light transmission part 15, the light control panel A and the light control panel B are in close contact with each other. A part of the light totally reflected by the vertical surface of the light control panel A enters the light control panel B, and the rest is scattered and attenuated by the slope 19 subjected to the scattered light processing. The light that has entered the light control panel B travels in the light control panel B and reaches the vertical plane of the groove 14 having a right-angled triangular section. The vertical surface acts as the planar light reflecting portion 12 only for the light incident on the point b in the vertical surface at an incident angle causing total reflection among the light reaching the vertical surface of the groove 14 and totally reflected. The light further travels in the light control panel B, and is emitted to the outside from the surface on the other side (the side on which the planar light reflecting portion 12 is not formed) in the light control panel B.

As shown in FIGS. 1 and 3, light incident on the vertical surface of the light control panel A with an incident angle of less than θc is refracted on the vertical surface and enters the groove 13, and some of the light is scattered light. The light is scattered and attenuated by the slope 19 that has been processed, and the remaining portion passes through the light transmitting portion 16 of the light control panel B and enters the light control panel B. Of the light that has entered the light control panel B, the light that is totally reflected by the vertical surface of the groove 14 and the light that travels in the light control panel B travels to the other side of the light control panel B. It is emitted from the surface of the outside. Further, the light incident on the vertical surface of the groove 13 of the light control panel A with the incident angle θc is reflected by the vertical surface of the groove 13 and becomes light along the vertical surface. 16 enters the light control panel B. Of the light that has entered the light control panel B, a part of the light is scattered and attenuated by the inclined surface 20 of the groove 14 that has been subjected to the scattered light treatment, and the remaining part is emitted from the other surface of the light control panel B to the outside. Is done. Further, the light enters directly into the light control panel B from the light control panel A via the light passing portions 15 and 16, travels through the light control panel B, and is emitted to the outside from the other surface of the light control panel B. There is also light.

Here, since the planar light reflecting portions 11 and 12 are disposed in a state of being orthogonally opposed to each other, they travel in the light control panel B and are emitted to the outside from the other surface of the light control panel B. Of the light, incident light incident on the planar light reflecting portion 11 is reflected at the point a of the planar light reflecting portion 11 for the first time, and the reflected light is reflected at the point b of the planar light reflecting portion 12 for the second time. When this happens, the second reflected light is radiated at the same angle as the incident angle of the incident light incident on the planar light reflecting portion 11. For this reason, among the light incident on the optical imaging apparatus 10 from the object M, the reflected light continuously reflected by the planar light reflecting portions 11 and 12 is in a symmetrical position with the object M across the optical imaging apparatus 10. It converges and an object image M ′ is generated at a symmetrical position with respect to the object M across the optical imaging apparatus 10.

On the other hand, after passing through the groove 13 of the light control panel A, the light enters the light control panel B, proceeds to the other side of the light control panel B, and is emitted to the outside from the other side surface. The light enters the vertical surface of the groove 13 at an incident angle θc, enters the light control panel B as light along the vertical surface of the groove 13, travels to the other side of the light control panel B, and travels from the other surface to the outside. The emitted light and the light that directly enters the light control panel B from the light control panel A, travels through the light control panel B, and is emitted to the outside from the other surface of the light control panel B are both The incident light entering the light control panel A is not reflected at the same angle. For this reason, the light emitted to the outside from the other surface of the light control panel B does not intersect and an image is not formed.

As shown in FIGS. 4 and 5, the optical imaging apparatus 21 according to the first embodiment of the present invention includes a large number of strips vertically in the thickness direction of the transparent flat plate inside the two transparent flat plates. The first light control panel C (hereinafter simply referred to as “light control panel C”) and the second light control panel D (which are formed by arranging the planar light reflecting portions 22 and 23 made of metal reflecting surfaces at a constant pitch. Hereinafter, simply referred to as “light control panel D”), one surface side of each of the light control panels C and D is brought into close contact with the planar light reflecting portions 22 and 23 facing each other. This will be described in detail below.

Each of the light control panels C and D has a constant thickness in which a metal reflecting surface (and thus a double-sided reflecting plate) made of a deposited layer (or plating layer) of aluminum or silver, which is an example of a metal, is formed on one surface side. A large number of plate-like transparent synthetic resin plates (for example, acrylic resin plates) or glass plates are laminated so that the metal reflection surface is arranged on one side, and a laminate is produced. The light control panels C and D are manufactured by cutting so that a cut surface perpendicular to the surface is formed. And the thickness of a transparent synthetic resin board or a glass plate is equivalent to the pitch of the plane light reflection parts 22 and 23, and the thickness of the light control panels C and D is determined by the thickness at the time of cutting out from a laminated body.

Here, the thickness at the time of cutting needs to be adjusted according to the intensity of the light control panels C and D and the vertical and horizontal dimensions of the light control panels C and D, and is, for example, 0.5 to 10 mm. . Here, the width of the planar light reflecting portions 22 and 23 is, for example, 0.5q to 3q (preferably 0.9q to 1.1q, more preferably) with respect to the pitch q of the planar light reflecting portions 22 and 23. q). When the width of the planar light reflecting portions 22 and 23 exceeds 3q, the light reflected by the planar light reflecting portions 22 and 23 is reflected by the adjacent planar light reflecting portions 22 and 23 and again reflected by the planar light reflecting portions 22 and 23. Repeatedly, a clear image cannot be obtained. On the other hand, when the widths of the planar light reflecting portions 22 and 23 are less than 0.5 q, the light reflected by the planar light reflecting portions 22 and 23 is reduced and a clear image cannot be obtained. The light control panels C and D are fixed to each other by a restraining member (for example, an adhesive, a heat seal, a screw, etc.) that is not shown, in close contact with each other.

Subsequently, the operation of the optical imaging apparatus 21 according to the first embodiment of the present invention will be described.
As shown in FIGS. 4 to 6, the light emitted from the object N arranged on the other side (the non-contact side with the light control panel D) of the light control panel C of the optical imaging device 21 is the light control panel C. Is incident obliquely on the other side surface, the incident light enters the light control panel C and is reflected at the point c of the planar light reflecting portion 22. Then, the reflected light reflected by the planar light reflecting portion 22 passes through the surface on one side of the light control panel D (the contact side with the light control panel C) from the surface on one side of the light control panel C, and the light. Enter the control panel D. Here, of the light that has entered the light control panel D, a part of the light is reflected at the point d of the planar light reflecting portion 23 of the light control panel D and further travels through the light control panel D to control the light. The light is discharged from the other side of the panel D to the outside. Further, a part of the remaining light travels in the light control panel D and is emitted to the outside from the other surface of the light control panel D.

Here, since the planar light reflecting portions 22 and 23 are arranged in a state of being orthogonally opposed to each other, they travel in the light control panel D and are emitted to the outside from the other surface of the light control panel D. Of the light, incident light incident on the planar light reflecting portion 22 is reflected at the point c of the planar light reflecting portion 22 for the first time, and the reflected light is reflected at the point d of the planar light reflecting portion 23 for the second time. When this happens, the second reflected light becomes parallel to the incident light incident on the planar light reflecting portion 22 in plan view (see FIG. 4). For this reason, among the light incident on the optical imaging device 21 from the object N, the reflected light continuously reflected by the planar light reflecting portions 22 and 23 is in a symmetrical position with the object N across the optical imaging device 21. It converges and an object image N ′ is generated at a symmetrical position with respect to the object N across the optical imaging device 21.

On the other hand, light that is reflected by the planar light reflecting portion 22 of the light control panel C, enters the light control panel D, travels through the light control panel D, and is emitted to the outside from the other surface, the light control panel C. The light that enters the light control panel C, enters the light control panel D, enters the light control panel D, and travels through the light control panel D and is emitted from the other side to the light control panel C. The incident light is not parallel to the incident light in plan view. For this reason, the light emitted to the outside from the other surface of the light control panel D does not intersect and an image is not formed.
In the optical imaging device 21, since the planar light reflecting portions 22 and 23 are metal reflecting surfaces, the incident angle of light reflected by the planar light reflecting portions 22 and 23 is not limited, and the light reflection angle is arbitrary. For this reason, an image can be formed at a wider range of angles than the reflecting surface using the principle of “total reflection of matter”.

FIG. 7 shows an optical imaging apparatus 26 according to the second embodiment of the present invention. As shown in FIG. 7, a first light control panel E (hereinafter simply referred to as “light control panel E”) and And a second light control panel F (hereinafter simply referred to as a light control panel F) in contact therewith. The light control panel E is provided with a number of long planar light reflecting portions 27 made of double-sided reflectors in parallel, and the light control panel F has a number of long planar light reflecting portions 28 made of double-sided reflectors in parallel. Is provided. The plane light reflecting portions 27 and 28 are erected in the same direction. Accordingly, the planar light reflecting portions 27 and 28 are arranged perpendicular to the contact surface 29 between the light control panel E and the light control panel F.

The longitudinal direction of the planar light reflecting portion 27 and the longitudinal direction of the planar light reflecting portion 28 are orthogonal to each other. These planar light reflecting portions 27 and 28 are embedded at a predetermined pitch in a transparent resin (for example, acrylic) or glass as in the optical imaging apparatus 21 according to the first embodiment.
In this embodiment, the planar light reflecting portions 27 and 28 in the light control panels E and F gradually increase in height (width) from the central portion toward the peripheral portion. , F has a circular cross section on one side.

Therefore, in this embodiment, the light (incident light) emitted from the light source P is reflected once by the planar light reflecting unit 27 in the center of the light control panel E, and the planar light reflecting unit 28 of the light control panel F is reflected once. And converges to the image point P ′. In addition, the light incident on the planar light reflecting portion 27 of the high portion in the peripheral portion of the light control panel F is internally reflected an odd number of times and enters the light control panel F, and the light control panel F has an odd number of times ( Once), the light is reflected and converges at or near the image point P ′. On the other hand, the light reflected by the light control panel E or the light control panel F an even number of times does not converge at the imaging point P ′.
Therefore, although it is difficult for the optical imaging devices 10 and 21 to collect the light at the peripheral portion of the light control panel, the optical imaging device 26 can collect a part of the light hitting the peripheral portion of the light control panel. .

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.
For example, in the reference example , the optical imaging device is configured by closely contacting one surface side of each of the first and second light control panels on which the planar light reflecting portion is formed so that the planar light reflecting portion is orthogonal to each other. However, a gap may be formed between the first and second light control panels. Here, the width of the gap can be, for example, 100 times or less the width of the band-shaped planar light reflecting portion.

In the first embodiment, the metal reflection surface is formed on one side of the transparent synthetic resin plate. However, the metal reflection surface may be formed on both side surfaces of the transparent synthetic resin plate or the glass plate. And a laminated body is produced by laminating a large number of transparent synthetic resin plates or glass plates having metal reflecting surfaces formed on both side surfaces, and cut-out surfaces perpendicular to the respective metal reflecting surfaces are formed from this laminated body. Thus, the first and second light control panels can be formed by cutting out.
Furthermore, in the first and second embodiments, the pitch of the planar light reflecting portion of the first light control panel is the same as the pitch of the planar light reflecting portion of the second light control panel. The pitch of the planar light reflecting portions of the light control panel may be different from the pitch of the planar light reflecting portions of the second light control panel.
Furthermore, in each embodiment, the space | interval (pitch) of the planar light reflection part in a light control panel does not necessarily need to be the same.

Oite the optical imaging equipment according to the present invention, the inside of the transparent plate, while the first and second light planar light reflecting portion of the vertically numerous and strip the surface of the side to form side by side at a constant pitch Since one surface side of each control panel faces each other with the respective plane light reflecting portions orthogonal to each other, the light emitted from the object arranged on one side of the optical imaging device is reflected by the optical imaging device. It converges on the other side and forms an image. Therefore, a stereoscopic image can be projected in the space, and can be applied to a stereoscopic display device, a game machine, a game machine, an advertising tower, and the like.
Furthermore, since the structure is simple, an inexpensive optical imaging apparatus can be provided.

DESCRIPTION OF SYMBOLS 10: Optical imaging device, 11, 12: Plane light reflection part, 13, 14: Groove, 15, 16: Light transmission part, 19, 20: Slope, 21: Optical imaging device, 22, 23: Plane light reflection Part, 26: optical imaging device, 27, 28: planar light reflecting part, 29: contact surface, A, C, E: first light control panel, B, D, F: second light control panel

Claims (3)

Using the first and second light control panels, in which a large number of strip-like planar light reflecting portions are arranged at a constant pitch perpendicularly to one surface of the transparent flat plate inside the transparent flat plate. An optical imaging apparatus, wherein one surface side of each of the two light control panels is opposed to each other with the planar light reflecting portions orthogonal to each other. 2. The optical imaging apparatus according to claim 1, wherein the planar light reflecting portions of the first and second light control panels are metal reflecting surfaces. 3. The optical imaging device according to claim 1, wherein the planar light reflecting portion is a double-sided reflecting plate, and the plurality of planar light reflecting portions respectively disposed in the first and second light control panels. The optical imaging apparatus is characterized in that the width of is gradually increased from the central part to the peripheral part.

Images