JP6232609B2 - 3D display device using retroreflective sheet - Google Patents

3D display device using retroreflective sheet Download PDF

Info

Publication number
JP6232609B2
JP6232609B2 JP2013060160A JP2013060160A JP6232609B2 JP 6232609 B2 JP6232609 B2 JP 6232609B2 JP 2013060160 A JP2013060160 A JP 2013060160A JP 2013060160 A JP2013060160 A JP 2013060160A JP 6232609 B2 JP6232609 B2 JP 6232609B2
Authority
JP
Japan
Prior art keywords
light source
point light
screen
display device
observer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2013060160A
Other languages
Japanese (ja)
Other versions
JP2014186123A (en
Inventor
保 椎原
保 椎原
Original Assignee
保 椎原
保 椎原
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 保 椎原, 保 椎原 filed Critical 保 椎原
Priority to JP2013060160A priority Critical patent/JP6232609B2/en
Priority to PCT/JP2013/075855 priority patent/WO2014147871A1/en
Publication of JP2014186123A publication Critical patent/JP2014186123A/en
Application granted granted Critical
Publication of JP6232609B2 publication Critical patent/JP6232609B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors
    • G02B5/136—Reflex reflectors plural reflecting elements forming part of a unitary body
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
    • G02B30/35—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers using reflective optical elements in the optical path between the images and the observer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B35/00—Stereoscopic photography
    • G03B35/18—Stereoscopic photography by simultaneous viewing
    • G03B35/24—Stereoscopic photography by simultaneous viewing using apertured or refractive resolving means on screens or between screen and eye

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Description

本発明は、光源と再帰性反射材シートを用いて、空間に立体的な映像を表示する表示装置に関する。本発明に係る立体表示装置は、インテリア装置やプロモーション装置、或いは、照明装置としても用いることができる。
The present invention relates to a light source and using a retroreflective sheet, a display device for displaying a stereoscopic image in the space. The stereoscopic display device according to the present invention can also be used as an interior device, a promotion device, or a lighting device.

空中に立体的な映像や光の塊等を表示させる技術（空間投影）には、空間に白煙（スモーク）や細かい水滴を噴霧し、そこに映像を投影するものが知られている。また、ハーフミラーやプロジェクターを用いた円筒状やボックス状の立体的構造物に映像を投影することにより、擬似的に立体映像を空間中に出現させる立体映像投影装置も知られている。   As a technique (space projection) for displaying a three-dimensional image, a lump of light or the like in the air, there is known a technique in which white smoke (smoke) or fine water droplets are sprayed on a space and the image is projected there. In addition, there is also known a stereoscopic image projection device that makes a stereoscopic image appear in space by projecting an image onto a cylindrical or box-shaped stereoscopic structure using a half mirror or a projector.

特許文献１〜３には次のような立体映像表示装置が記載されている。特許文献１の立体画像表示装置は、表示面に表示された右目用と左目用の視差画像をそれぞれの目のみに到達させるようにし、表示面の正対方向に対する鑑賞者の傾き角である視角を検出して、それに基づいて、鑑賞者に対して表示画像が正対するように視差画像を座標変換するようにしている。特許文献２の空中投影装置は、超音波で水を霧状にし、送風機で空間に帯状に放出する。その霧を急冷することによりスクリーンとし、そこに映像を投影している。特許文献３の映像表示システムは、光源の照明範囲を含むように再帰性反射材によるスクリーンを設けたものである。その外面から映像を投影すると、ある範囲に位置する利用者には映像を提示しながら、それ以外の位置に対しては映像の影響の無い照明光を発することができる。   Patent Documents 1 to 3 describe the following stereoscopic video display devices. The stereoscopic image display device disclosed in Patent Document 1 causes the right-eye and left-eye parallax images displayed on the display surface to reach only the respective eyes, and a viewing angle that is an inclination angle of the viewer with respect to the normal direction of the display surface. Based on this, the parallax image is coordinate-transformed so that the display image faces the viewer. The aerial projection apparatus of Patent Document 2 forms water in a mist form with ultrasonic waves and discharges it into a space with a blower. The fog is rapidly cooled to form a screen, and images are projected onto it. The video display system of Patent Document 3 is provided with a screen made of a retroreflective material so as to include the illumination range of the light source. When an image is projected from the outer surface, illumination light having no influence on the image can be emitted to other positions while presenting the image to a user located in a certain range.

特開2006-133665号公報JP 2006-133665 A 特開2008-096942号公報JP 2008-096942 A 特開2011-095309号公報JP 2011-095309 A

上記の従来の立体映像表示装置はいずれも、大がかりな装置を必要とする。また、空間にスモークや霧等を散布するため、表示空間がクリアでないという欠点がある。   Any of the above-described conventional stereoscopic video display devices requires a large-scale device. Moreover, since smoke, fog, etc. are spread | dispersed in space, there exists a fault that a display space is not clear.

本発明が解決しようとする課題は、スモークや霧などを用いずに、また、まったくの支持体無しに、空間に映像を投影する立体表示装置を提供することである。   The problem to be solved by the present invention is to provide a stereoscopic display device that projects an image in a space without using smoke or fog, or without any support.

上記課題を解決するために成された本発明に係る立体表示装置は、
点光源と、
観察者の右目と前記点光源を結ぶ直線の前記点光源側延長線及び観察者の左目と前記点光源を結ぶ直線の前記点光源側延長線の双方が交差するように配置された再帰性反射材シートから成るスクリーンとを備えることを特徴とする。
The stereoscopic display device according to the present invention, which has been made to solve the above problems,
A point light source,
Retroreflective reflection arranged such that both the point light source side extension line of the straight line connecting the observer's right eye and the point light source and the point light source side extension line of the straight line connecting the observer's left eye and the point light source intersect. characterized in that it comprises a screen made of wood sheets.

前記点光源は、LED光源とすることが望ましい。発光面積が小さく、より高い輝度で発光することができるため、本発明の効果をより良く得ることができる。   The point light source is preferably an LED light source. Since the light emitting area is small and light can be emitted with higher luminance, the effect of the present invention can be obtained better.

前記スクリーンと観察者の間に配置される点光源を複数としてもよい。   There may be a plurality of point light sources arranged between the screen and the observer.

本発明に係る立体表示装置では、観察者が点光源を見ると、その点光源の周囲に光の塊がぼんやりと浮かび上がる。この光の塊は、スクリーンの方ではなく、点光源の周囲に存在するように視認される。観察者が横に移動し、それらスクリーンと点光源に対する位置を変えても、光の塊は点光源の周囲に留まったままである。このような点光源を複数、図形状、文字状、立体状に配置することにより、様々な造形を空間中に現出することができる。また、これらの点光源をそれぞれ独立に動かしたり点滅させることにより、動画的な効果を現すこともできる。   In the stereoscopic display device according to the present invention, when an observer looks at a point light source, a lump of light gently appears around the point light source. This light mass is visually recognized so as to exist around the point light source instead of the screen. If the observer moves sideways and changes their position relative to the screen and point light source, the light mass remains around the point light source. By arranging a plurality of such point light sources in a figure shape, a character shape, or a three-dimensional shape, various shapes can appear in the space. In addition, by moving these point light sources independently or blinking, a moving image effect can be achieved.

本発明の基本構成である立体表示装置の概略構成図。1 is a schematic configuration diagram of a stereoscopic display device which is a basic configuration of the present invention. 前記基本構成の立体表示装置の、スクリーン上での光の状態を表す説明図。Explanatory drawing showing the state of the light on the screen of the stereoscopic display apparatus of the said basic composition. 前記基本構成の立体表示装置の、一方の目（右目）による視認の状態を示す俯瞰図。The overhead view which shows the visual recognition state by the one eye (right eye) of the stereoscopic display apparatus of the said basic composition. 前記基本構成の立体表示装置の、視認位置を変えた場合の視認の状態を示す俯瞰図。The overhead view which shows the state of visual recognition at the time of changing the visual recognition position of the three-dimensional display apparatus of the said basic composition. 前記基本構成の立体表示装置の原理を説明するための、特異状態での視認の様子を示す俯瞰図。The overhead view which shows the mode of visual recognition in a peculiar state for demonstrating the principle of the stereoscopic display apparatus of the said basic composition. 本発明の応用例である格子状点光源配列表示装置の外観図(a)及び各点光源の回路図(b)。FIG. 2 is an external view (a) of a lattice point light source array display device that is an application example of the present invention, and a circuit diagram (b) of each point light source.

本発明の基本構成である立体表示装置について説明する。図１は、その立体表示装置を上から見た図（平面図）であり、LED光源による点光源１０と再帰性反射材シートから成るスクリーン１１から成る空間疑似投影技術の基本システムを示す。本システムでは、点光源１０としてローム株式会社のPICOLED（登録商標）を用いているが、発光部の面積が小さく、輝度が大きいものであれば、この他にも様々な光源を点光源１０として用いることができる（例えば、リンクマン（Linkman）社のチップ赤色LED光源HT17-21SRWCなど。）。また、再帰性反射材シートから成るスクリーン１１には、例えば、3M社のスコッチライト（登録商標）を用いることができるが、もちろん、それ以外にも、各社から販売されている再帰性反射布・反射板等を用いることができる。   A stereoscopic display device that is a basic configuration of the present invention will be described. FIG. 1 is a diagram (plan view) of the stereoscopic display device as viewed from above, and shows a basic system of a spatial pseudo-projection technique including a point light source 10 using an LED light source and a screen 11 made of a retroreflective material sheet. In this system, ROHM Co., Ltd. PICOLED (registered trademark) is used as the point light source 10, but various other light sources can be used as the point light source 10 as long as the area of the light emitting portion is small and the luminance is high. (For example, Linkman chip red LED light source HT17-21SRWC). In addition, for example, 3M Scotchlite (registered trademark) can be used for the screen 11 made of the retroreflective material sheet. A reflector or the like can be used.

点光源１０は、その照射方向がスクリーン１１の再帰性反射面（再帰性反射材が塗布された面）を向くように配置する。図１の例では、点光源１０はスクリーン１１から300 mm離して配置しているが、この距離はもちろん任意である。観察者１２は、その点光源１０の後方において、スクリーン１１の再帰性反射面を観察する。図１では、点光源１０と観察者１２の目の距離を400 mmとしたが、これも任意である。なお、図１では観察者１２の左右眼の間隔は70 mmとしたが、これも人による。   The point light source 10 is arranged so that the irradiation direction thereof faces the retroreflecting surface of the screen 11 (the surface coated with the retroreflecting material). In the example of FIG. 1, the point light source 10 is arranged 300 mm away from the screen 11, but this distance is of course arbitrary. The observer 12 observes the retroreflection surface of the screen 11 behind the point light source 10. In FIG. 1, the distance between the point light source 10 and the eyes of the observer 12 is 400 mm, but this is also arbitrary. In FIG. 1, the distance between the left and right eyes of the observer 12 is 70 mm, which is also human.

このような状態で観察者１２がスクリーン１１の再帰性反射面の方を観察すると、点光源１０の周囲に、あたかも光の塊１３のような3次元像が見える。すなわち、点光源１０の左右上下の2次元的な周囲ばかりではなく、点光源１０の前後にも光の存在する空間が形成されているように見える。   When the observer 12 observes the retroreflecting surface of the screen 11 in such a state, a three-dimensional image as if a lump of light 13 is seen around the point light source 10. That is, it appears that a space where light exists is formed not only in the two-dimensional surroundings of the point light source 10 but also in the front and rear of the point light source 10.

この現象は、次のような原理によるものと考えられる。右目と点光源１０を結ぶ線L1は、点光源１０（点X）を通った後、その延長線L2がスクリーン１１の表面の点Aで交差する。点光源１０の光は、この延長線L2を通ってスクリーン１１の表面の点Aに達するが、該表面で再帰性反射され、同じ線L2、L1を通って観察者１２の右目の方に戻って来る。この点Aにおける再帰性反射の際に、厳密に同じ角度（方向）に反射されるのではなく、その角度を中心として僅かに幅のある角度で反射される。従って、点Aを中心として少し幅のある領域aからの光が右目に戻って来る。   This phenomenon is thought to be due to the following principle. The line L1 connecting the right eye and the point light source 10 passes through the point light source 10 (point X), and then the extension line L2 intersects at the point A on the surface of the screen 11. The light from the point light source 10 reaches the point A on the surface of the screen 11 through the extended line L2, but is retroreflected on the surface and returns toward the right eye of the observer 12 through the same lines L2 and L1. Come on. When retroreflecting at this point A, it is not reflected at exactly the same angle (direction), but is reflected at an angle having a slight width around that angle. Accordingly, light from the region a having a little width around the point A returns to the right eye.

点光源１０からの光は、こうしてスクリーン１１の表面で反射され、観察眼（右目）の方に入るため、観察眼（右目）は、スクリーン１１の表面を鏡面とした、点光源１０の虚像を、スクリーン１１の表面の向こう側に観察することとなる。ここで、スクリーン１１が完全な鏡面反射面であれば、虚像は同じ点光源の像となるが、前述の通り、スクリーン１１の表面において幅のある領域aの光が観察眼（右目）に入るため、観察眼（右目）が見る虚像は、点光源１０を中心とした、幅のある領域のように見える。   Since the light from the point light source 10 is thus reflected by the surface of the screen 11 and enters the observation eye (right eye), the observation eye (right eye) creates a virtual image of the point light source 10 with the surface of the screen 11 as a mirror surface. The observation is made on the other side of the surface of the screen 11. Here, if the screen 11 is a perfect specular reflection surface, the virtual image becomes the image of the same point light source. However, as described above, the light of the wide area a on the surface of the screen 11 enters the observation eye (right eye). Therefore, the virtual image seen by the observation eye (right eye) looks like a wide area around the point light source 10.

観察者の左目についても全く同様の現象が生じる。すなわち、図２に示すように、右目が点Aを中心とする領域aを虚像として観察し、左目が点Bを中心とする領域bを虚像として観察する。こうして左右眼によりそれぞれ観察される視差のある２つの像が脳内で合成されることにより、点光源１０を中心とした幅のある領域が立体視され、観察者には、点光源１０を中心とした光の塊１３が存在するように視認される。   The same phenomenon occurs for the left eye of the observer. That is, as shown in FIG. 2, the right eye observes a region a centered on point A as a virtual image, and the left eye observes a region b centered on point B as a virtual image. In this way, two images with parallax observed by the left and right eyes are synthesized in the brain, so that a wide area around the point light source 10 is stereoscopically viewed. It is visually recognized that there is a lump 13 of light.

このような現象は、観察者１２が点光源１０の真後ろに居る（スクリーン１１に垂直に向かい合った）場合のみならず、それよりも横に移動した場合にも生じる。すなわち、このような現象は、スクリーン１１の有効反射角度の中において生じる。この有効反射角度の大きさは、スクリーン１１を構成する再帰性反射材の反射性能による。   Such a phenomenon occurs not only when the observer 12 is directly behind the point light source 10 (facing the screen 11 perpendicularly) but also when moving laterally. That is, such a phenomenon occurs in the effective reflection angle of the screen 11. The magnitude of this effective reflection angle depends on the reflection performance of the retroreflecting material that constitutes the screen 11.

距離に関しては、図１のような、比較的近い距離関係ばかりではなく、15 m（15000 mm）まで離しても、同様の現象を視認することができる。点光源１０からの光の強さは距離の２乗に反比例することから、距離が大きくなれば観察者１２の観察眼に入る光の量は弱くなってしまうし、周囲からの光によって見え方が相対的に弱くなってしまうが、上記現象が消失することはない。
Regarding the distance, not only a relatively close distance relationship as shown in FIG. 1 but also a similar phenomenon can be visually recognized even when the distance is 15 m ( 15000 mm). Since the intensity of the light from the point light source 10 is inversely proportional to the square of the distance, the amount of light that enters the observation eye of the observer 12 becomes weaker as the distance increases, and the light is visible by ambient light. However, the above phenomenon does not disappear.

これらを表したのが図４である。この図のO点、P点、Q点等、どの位置でも同様の現象が視認される。ただ、各種実験を行ったところ、観察者１２の位置を固定した状態で点光源１０とスクリーン１１の距離を広げると（すなわち、点光源１０を観察者１２に近づけると）、観察される光の塊１３のサイズが大きくなり、色調も、光の塊１３の中心部は白色に、周辺部は黄色味を帯びたものとなる。   These are shown in FIG. The same phenomenon can be visually recognized at any position such as O point, P point, and Q point in the figure. However, when various experiments were performed, when the distance between the point light source 10 and the screen 11 was increased in a state where the position of the observer 12 was fixed (that is, when the point light source 10 was brought closer to the observer 12), The size of the lump 13 is increased, and the color tone is white at the center of the lump 13 and yellowish at the periphery.

なお、図３（のインセット内）に示すように、点光源１０は前記のとおり、発光面をスクリーン１１側とする他、点光源１０の光が観察者側に直接来ないように、背面（観察者側の面）には小さな覆い１５をしておくことが望ましい。また、同図に示すように、点光源１０は通常、或る角度の範囲内に発光を行う（LED光源の場合、120°〜130°程度）ため、点光源１０は必ずしもスクリーン１１に向けて正対させる必要はなく、多少、向きがずれていても構わない。   As shown in FIG. 3 (inside the inset), the point light source 10 has a light emitting surface on the screen 11 side as described above, and the back of the point light source 10 so that the light from the point light source 10 does not come directly to the viewer side. It is desirable to put a small cover 15 on the (observer side surface). Further, as shown in the figure, the point light source 10 usually emits light within a certain angle range (in the case of an LED light source, about 120 ° to 130 °), so the point light source 10 is not necessarily directed toward the screen 11. It is not necessary to make it face up, and the direction may be slightly shifted.

上記原理を実証する例を図５に示す。これは、右目で点光源１０を見たときに、スクリーン１１の右端が丁度その真後ろにあり、左目から見たときには点光源１０の背後にはスクリーン１１が存在しないという場合である。この場合、インセット内に示すように、右目では点光源１０の領域aの左半分（a'）しか見えず、左目では領域bは全く見えない。その結果、観察者１２は、点光源１０の周囲のうち、左半分の方にだけ光の塊１３’が存在するような3次元像を視認することが認められた。   An example demonstrating the above principle is shown in FIG. This is a case where the right end of the screen 11 is just behind the point light source 10 when viewed from the right eye, and the screen 11 does not exist behind the point light source 10 when viewed from the left eye. In this case, as shown in the inset, only the left half (a ′) of the area a of the point light source 10 can be seen with the right eye, and the area b cannot be seen with the left eye. As a result, it was recognized that the observer 12 visually recognized a three-dimensional image in which the light lump 13 ′ exists only in the left half of the periphery of the point light source 10.

上記例では点光源１０としてチップ単体型のLED光源を用いたが、このLED光源はレンズ付（砲弾型）のものでもよい。また、LED光源のような自発光光源に限られず、点状に発光するものであれば、光ファイバーの先端を点光源としてもよい。さらに、従来型のフイラメントの光源でも、その発光面積が小さいものであれば、使用することができる。ただ、その場合、点光源１０の周囲に視認される光の塊１３の像は、ややシャープさに欠けたものとなる。恐らく、フイラメントの周囲のガラス球の表面での屈折等が原因であろうと考えられる。   In the above example, a single chip type LED light source is used as the point light source 10, but this LED light source may be a lens-mounted (bullet type). Further, the light source is not limited to a self-luminous light source such as an LED light source, and the tip of the optical fiber may be used as a point light source as long as it emits light in a point shape. Further, even a conventional filament light source can be used as long as its light emitting area is small. However, in that case, the image of the light mass 13 visually recognized around the point light source 10 is slightly lacking in sharpness. Probably due to refraction at the surface of the glass sphere around the filament.

本発明に係る表示装置は、インテリア装置やプロモーション装置、或いは、照明装置としても用いることができる。   The display device according to the present invention can also be used as an interior device, a promotion device, or a lighting device.

例えば、図６(a)に示すように、点光源２１を多数、格子状に配置して、各点光源２１の点滅を制御するようにしてもよい。この場合、図６(b)に示すように、各点光源２１には、その点滅を制御するための制御回路チップ２２を設け、正負の電源線２３、２４の他に制御信号線２５をこの制御回路チップ２２に接続する。これらの電源線２３、２４及び制御信号線２５は、この格子状表示装置２０の両側に設けたフレーム２６に接続し、それらを吊す吊下線２７を通じて外部の制御回路（図示せず）に接続する。こうして、この格子状表示装置２０の各光源２１の点滅を個別に制御することにより、様々なパターン（文字等を含む）を表示することが可能となる。   For example, as shown in FIG. 6A, a large number of point light sources 21 may be arranged in a lattice pattern to control blinking of each point light source 21. In this case, as shown in FIG. 6 (b), each point light source 21 is provided with a control circuit chip 22 for controlling the blinking, and in addition to the positive and negative power supply lines 23 and 24, the control signal line 25 is provided. Connected to the control circuit chip 22. The power supply lines 23 and 24 and the control signal line 25 are connected to frames 26 provided on both sides of the lattice display device 20 and are connected to an external control circuit (not shown) through a suspension line 27 for suspending the frames. . In this way, various patterns (including characters and the like) can be displayed by individually controlling the blinking of each light source 21 of the lattice display device 20.

１０…点光源
１１…スクリーン
１２…観察者
１３…観察される光の塊
１５…点光源の背後の覆い
２０…格子状表示装置
２１…点光源
２２…制御回路チップ
２３、２４…電源線
２５…制御信号線
２６…フレーム
２７…吊下線 DESCRIPTION OF SYMBOLS 10 ... Point light source 11 ... Screen 12 ... Observer 13 ... Observed light 15 ... Cover behind point light source 20 ... Grid-shaped display device 21 ... Point light source 22 ... Control circuit chip 23, 24 ... Power supply line 25 ... Control signal line 26 ... frame 27 ... suspension line

Claims (7)

点光源と、
観察者の右目と前記点光源を結ぶ直線の前記点光源側延長線及び観察者の左目と前記点光源を結ぶ直線の前記点光源側延長線の双方が交差するように配置された再帰性反射材シートから成るスクリーンとを備えることを特徴とする立体表示装置。 A point light source,
Retroreflective reflection arranged such that both the point light source side extension line of the straight line connecting the observer's right eye and the point light source and the point light source side extension line of the straight line connecting the observer's left eye and the point light source intersect. stereoscopic display device, characterized in that it comprises a screen made of wood sheets. 前記点光源がLED光源であることを特徴とする請求項１に記載の立体表示装置。   The stereoscopic display device according to claim 1, wherein the point light source is an LED light source. 前記点光源が複数配置されていることを特徴とする請求項１又は２に記載の立体表示装置。 Stereoscopic display device according to claim 1 or 2, characterized in that the point light source is disposed multiple. 前記複数の点光源が格子状に配置され、各点光源について、その点滅を制御する制御回路チップが設けられていることを特徴とする請求項３に記載の立体表示装置。   The stereoscopic display device according to claim 3, wherein the plurality of point light sources are arranged in a grid pattern, and a control circuit chip that controls blinking of each point light source is provided. 観察者の視認方向に再帰性反射材シートから成るスクリーンを配置し、該観察者と該スクリーンの間に点光源を、該スクリーンの方に向けて光を照射するように配置するとともに、前記観察者の右目と前記点光源を結ぶ直線の前記点光源側延長線及び前記観察者の左目と前記点光源を結ぶ直線の前記点光源側延長線の双方が前記スクリーンに交差するようにすることを特徴とする立体表示方法。 A screen made of a retroreflective material sheet is arranged in the viewing direction of the observer, a point light source is arranged between the observer and the screen so as to irradiate light toward the screen, and the observation The point light source side extension line of the straight line connecting the right eye of the viewer and the point light source and the point light source side extension line of the straight line connecting the left eye of the viewer and the point light source cross the screen. A featured stereoscopic display method. 前記点光源を移動又は点滅させることを特徴とする請求項５に記載の立体表示方法。   The stereoscopic display method according to claim 5, wherein the point light source is moved or blinked. 前記点光源を複数用いることを特徴とする請求項５又は６に記載の立体表示方法。The three-dimensional display method according to claim 5 or 6, wherein a plurality of the point light sources are used.
JP2013060160A 2013-03-22 2013-03-22 3D display device using retroreflective sheet Active JP6232609B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2013060160A JP6232609B2 (en) 2013-03-22 2013-03-22 3D display device using retroreflective sheet
PCT/JP2013/075855 WO2014147871A1 (en) 2013-03-22 2013-09-25 3d display device using retroreflective sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013060160A JP6232609B2 (en) 2013-03-22 2013-03-22 3D display device using retroreflective sheet

Publications (2)

Publication Number Publication Date
JP2014186123A JP2014186123A (en) 2014-10-02
JP6232609B2 true JP6232609B2 (en) 2017-11-22

Family

ID=51579586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013060160A Active JP6232609B2 (en) 2013-03-22 2013-03-22 3D display device using retroreflective sheet

Country Status (2)

Country Link
JP (1) JP6232609B2 (en)
WO (1) WO2014147871A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3900446B2 (en) * 1998-06-19 2007-04-04 株式会社東京大学Ｔｌｏ Image display method and apparatus
JP4625945B2 (en) * 2004-06-28 2011-02-02 国立大学法人 東京大学 Image display device
JP5532815B2 (en) * 2009-10-19 2014-06-25 セイコーエプソン株式会社 Lighting device, projector and electronic device
US20130215347A1 (en) * 2010-11-04 2013-08-22 Sharp Kabushiki Kaisha Display system, mobile terminal, and electronic equipment
JP5728748B2 (en) * 2011-05-25 2015-06-03 国立研究開発法人情報通信研究機構 Reflector array optical device and display device using the same

Also Published As

Publication number Publication date
JP2014186123A (en) 2014-10-02
WO2014147871A1 (en) 2014-09-25

Similar Documents

Publication Publication Date Title
US10739613B2 (en) Retroreflector display system for generating floating image effects
CN101750747B (en) Three-dimensional stereoscopic imaging method, system and imaging device
US8749621B2 (en) Volumetric projection device
CN103616770B (en) Based on the panorama three-dimensional display apparatus of multi-projector and transmission-type scattering screen
WO2015043098A1 (en) Multi-viewing angle naked-eye three-dimensional display system and display method therefor
CN107783305B (en) Time division multiplexing 3D display and application thereof
JP2009128565A (en) Display device, display method and head-up display
CN208092354U (en) Display device
US11747542B2 (en) Display method
CN103616769B (en) Panorama three-dimensional display apparatus based on single scialyscope and transmission-type scattering screen
WO2020237923A1 (en) Display panel, display method, and display system
JP6786822B2 (en) Display device and game machine
JP2008527918A5 (en)
JP2011164631A (en) Display, display method, and head-up display
JP6232609B2 (en) 3D display device using retroreflective sheet
US20200041792A1 (en) Head mounted display and multiple depth imaging apparatus
US20230308629A1 (en) Information Processing Device, Information Processing System, And Member
KR20160080229A (en) Stereoscopic image display device
US9857592B2 (en) Display device
CN209879155U (en) Stereoscopic projection device based on double gratings
CN110161796B (en) Stereoscopic projection device based on double-lens array
CN109283693B (en) Light field stereoscopic display device based on light-emitting diode packaging unit
CN203337993U (en) Raster-type 3D projection system
CN201637936U (en) Three-dimensional imaging system and imaging device
TWI595270B (en) Backlight module and stereo display device using the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20160317

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170228

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170405

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20170912

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20170928

R150 Certificate of patent or registration of utility model

Ref document number: 6232609

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250