JP2004015793A - Three-dimensional video display device - Google Patents

Three-dimensional video display device Download PDF

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Publication number
JP2004015793A
JP2004015793A JP2002206275A JP2002206275A JP2004015793A JP 2004015793 A JP2004015793 A JP 2004015793A JP 2002206275 A JP2002206275 A JP 2002206275A JP 2002206275 A JP2002206275 A JP 2002206275A JP 2004015793 A JP2004015793 A JP 2004015793A
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JP
Japan
Prior art keywords
display device
eye
eye image
illumination light
light source
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.)
Pending
Application number
JP2002206275A
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Japanese (ja)
Inventor
Jun Ishikawa
石川 洵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ISHIKAWA KOGAKU ZOKEI KENKYUSH
ISHIKAWA KOGAKU ZOKEI KENKYUSHO KK
Original Assignee
ISHIKAWA KOGAKU ZOKEI KENKYUSH
ISHIKAWA KOGAKU ZOKEI KENKYUSHO KK
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 ISHIKAWA KOGAKU ZOKEI KENKYUSH, ISHIKAWA KOGAKU ZOKEI KENKYUSHO KK filed Critical ISHIKAWA KOGAKU ZOKEI KENKYUSH
Priority to JP2002206275A priority Critical patent/JP2004015793A/en
Publication of JP2004015793A publication Critical patent/JP2004015793A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To observe three-dimensional (3D) video of a high picture quality without using dedicated spectacles and to provide an enough field of view. <P>SOLUTION: The 3D video display device uses a display device in which a recursive reflection screen is installed in contact with the back of a liquid crystal display element, a half mirror is installed while being obliquely inclined forwards in the time division scheme, and illumination lamps 2 separated for an interval of both eyes are provided above. The time divided 3D video is inputted in the display device. During image display time for the left eye, the left illumination is turned on and during image display time for the right eye, the right illumination is turned on. In the polarization scheme, another display device is installed under the oblique half mirror, one set is assigned for the image for the left eye and the other set is assigned for the image for the right eye. Two display devices are located in polarization directions mutually different in the view from the half mirror or a polarization filter is added to provide different polarization directions. The left illumination is set by mounting the polarization filter in a direction where the left display device is visible, and the right illumination is also set based upon the same idea. The illumination is continuously turned on, and the 3D video image is input to the left and right display devices for the left and right channels independently. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
専用眼鏡なしに3次元映像を観察できる表示装置に関するものである。
【0002】
【従来の技術】
従来、3次元映像を観察するには専用眼鏡を必要とし煩わしかった。また眼鏡なし方式の場合は、画質が劣化するレンチキュラーレンズ等を使用するか、あるいは視域の非常に狭いものしかなかった。
【0003】
【発明が解決しようとする課題】
専用眼鏡を使用せず高画質の3次元映像を観察できるようにし、かつその視域を余裕のあるものとすること。
【0004】
【課題を解決するための手段】
1.左右眼に時分割で映像を提示する場合
(イ)液晶表示素子などの透過形非発光表示素子の背面に隣接して回帰反射スクリーンを設ける。
(ロ)表示素子の手前に斜めにハーフミラーを設ける。
(ハ)ハーフミラーを通して表示素子を見られる位置に通常のヒトの両眼の間隔だけ離した仮想の、左眼観察視点位置、右眼観察視点位置を設定する。
(ニ)左眼画像用、右眼画像用の照明光源を、ハーフミラーに関して左眼および右眼観察視点位置と対称になる位置に設置する。
(ホ)照明光源をハーフミラーに反射させて液晶面を照明する。光源の点灯は、時分割で左眼用画像が表示されている時間は左眼画像用照明を点灯し、右眼用画像が表示されている時間は右眼画像用照明を点灯する。
(ヘ)観察点と照明光源の位置は相互に交換しても同じ機能が得られる。
2.左右眼に同時に映像を提示する場合
(イ)液晶表示素子などの透過形非発光表示素子の背面に隣接して回帰反射スクリーンを設けた表示デバイス2式を、間にハーフミラーを斜めに設け、ハーフミラーに関して2式の表示デバイスが対称の位置となるように配置する。このとき2式の表示デバイスは、ハーフミラーから見たときその偏光特性の方向が相互に異なった向きとなるようにする。無偏光の場合あるいは偏光特性が弱い場合には表示素子の前面または後面に偏光フィルターを追加する。
(ロ)ハーフミラーの透過および反射で2式の表示デバイスが見える位置に通常のヒトの両眼の間隔だけ離した仮想の、左眼観察視点位置、右眼観察視点位置を設定する。
(ハ)左眼画像用、右眼画像用の照明光源をハーフミラーに関して左眼および右眼観察視点位置と対称になる位置に設置する。
(ニ)左眼画像用照明と右眼画像用照明の各々に偏光フィルターを設ける。偏光フィルターの取り付け方向は左眼画像用照明の偏光フィルターは、照明を点灯したとき左眼画像用表示デバイスが可視となる偏光方向に、右眼画像用照明の偏光フィルターは右眼画像用表示デバイスが可視となる偏光方向にそれぞれ設定する。
(ホ)左眼画像用および右眼画像用の表示デバイスに表示する映像は、観察視点位置から見たときに上下左右が正像となるように向きを合わせる。
(ヘ)以下のように構成された装置の左眼画像用表示デバイスに左眼用映像を、右眼画像用表示デバイスに右眼用映像をそれぞれ同時に入力し、左眼画像用照明、右眼画像用照明を連続点灯し、左眼視点位置、右目視点位置にそれぞれ左右眼を合わせて3次元映像を観察する。
(ト)なお、観察視点位置と照明光源の位置は相互に交換しても同じ機能が得られる。
3.複数人観察に対応する場合
左眼画像用照明光源、右眼画像用照明光源の対をヒトの頭部の寸法以上離して複数組設ける。
4.観察者の移動に対応する場合
(イ)左眼画像用照明光源、右眼画像用照明光源の対を自動ステージ等により移動する。
(ロ)任意のパターンに発光可能な面状発光ユニットを照明光源として用い、その発光位置を変えることによって上記(イ)と同じ効果を持たせる。
【0005】
【発明の実施形態】
本発明の実施形態を例をあげて説明する。なお本発明の実施形態は以下の例に限定されない。
<実施形態1>
図1のように液晶表示素子1の背面に、バックライトの代わりに回帰反射スクリーン2を密着設置して表示デバイス3とする。図2のように表示素子の手前に観察視点側に斜めに傾けたハーフミラー4を設ける。ハーフミラー4を通して表示デバイス3を見られる位置に、ヒトの左眼右眼の間隔65mm程度離した仮想の左眼観察視点位置7Lおよび右眼観察視点位置7Rを設定する。左眼画像用照明光源5、右眼画像用照明光源6をハーフミラー4に関して観察視点位置7Lおよび7Rと対称になる位置に設置する。照明の点灯タイミングは、時分割による左眼用画像、右眼用画像の表示と同期させ、左眼用画像表示時間には左眼画像用照明光源5を、右眼用画像表示時間には右眼画像用照明光源6を点灯する。以上のように構成された装置に時分割方式の3次元映像を入力し、表示デバイス3に映像表示すると共に照明ドライバー8にて左右照明を画像に同期して点灯する。作動としては、図3のように左眼画像用照明光源5から出た照明光9はハーフミラー4にて反射し、表示デバイス3を照明し、表示素子1を透過した後、回帰反射スクリーン2に反射し回帰して、一部がハーフミラー4を透過して左眼観察視点位置7Lに至る。右眼画像用照明光源6から出た照明光10も同様にして右眼観察視点位置7Rに至る。いま、左眼観察視点位置7Lに左眼を、右眼観察視点位置7Rに右眼をそれぞれ合わせて表示デバイス3を見ると、映像の時分割タイミングに合わせて左眼には左眼用画像が、右眼には右眼用画像が交互に見えるため、専用眼鏡なしで3次元映像を観察できる。
<実施形態2>
実施形態1と同様に図1のように回帰反射スクリーン2を組み合わせた表示デバイスを2式用い、図4のように1式を左眼画像用表示デバイス11、もう1式を右眼画像用表示デバイス12とし、両者の間にハーフミラー4を斜めに設け、ハーフミラー4に関して2式の表示デバイス11、12が対称の位置となるように配置する。このとき2式の表示デバイス11、12はハーフミラー4から見たとき、その偏光特性の方向が相互に異なった向きとなるように配置する。無偏光の場合や、偏光特性が弱い場合、あるいは配置上偏光特性が同じ向きになる場合には、必要に応じて、表示デバイス11、12の一方または両方の表示素子の前面または後面に偏光フィルター14を追加する。ハーフミラー4の透過および反射で表示デバイス11、12が見られる位置に、ヒトの左眼右眼の間隔65mm程度離した、仮想の、左眼観察視点位置7Lおよび右眼観察視点位置7Rを設定する。左眼画像用照明光源5と右眼画像用照明光源6を、ハーフミラー4に関して左眼観察視点位置7Lおよび右眼観察視点位置7Rとそれぞれ対称になる位置に設置する。左眼画像用照明光源5と右眼画像用照明光源6の各々には偏光フィルター13を設ける。偏光フィルター13の取り付け方向は、左眼画像用照明光源5では照明を点灯したとき左眼画像用表示デバイス11が可視となる偏光方向に、右眼画像用照明光源6では点灯したとき右眼画像用表示デバイス12が可視となる方向にそれぞれ設定する。以上のように構成された装置の左眼画像用表示デバイス11に左眼用映像を、右眼画像用表示デバイス12に右眼用映像を、左右映像同期させて入力する。また、照明光源5、6は連続点灯する。作動としては、図5のように左眼画像用照明光源5からでた照明光9は偏光フィルター13にて偏光を与えられ、ハーフミラー4にて反射し、偏光方向が合わせてある左眼画像用表示デバイス11を照明し、その表示素子1を透過した後、回帰反射スクリーン2にて反射し回帰して、一部がハーフミラー4を透過し、左眼観察視点位置7Lに至る。なお、ハーフミラー4を透過し右目画像を表示デバイス12に向かった光は偏光特性によりブロックされ回帰反射スクリーンに届かない。右眼画像用照明光源6から出た照明光10も同様にしてハーフミラー4を透過、表示デバイス12で回帰反射し、ハーフミラー4で反射し、右眼観察視点位置7Rに至る。ハーフミラー反射で表示デバイス11に届いた光はこの場合も偏光特性でブロックされ回帰反射しない。いま、左眼観察視点位置7Lに左眼を、右眼観察視点位置7Rに右眼をそれぞれ合わせて観察すると、左眼には左眼用画像が、右眼には右眼用画像がそれぞれ見えるので、専用眼鏡なしに3次元映像を観察できる。なお、観察視点から見たとき、左眼用画像、右眼用画像とも上下左右正像となるよう、あらかじめ表示デバイスあるいは入力信号の設定を行なっておくことが必要である。
<実施形態3>
実施形態1および2の装置において、表示デバイスの両面を大型にし、左眼画像用照明光源5と右眼画像用照明光源6のペアを実施形態1ではそのまま、実施形態2の場合には偏光フィルター13を加えて、少なくともヒトの頭部寸法以上の間隔を持って複数組設置した装置。こうすることによって、1台の装置で同時に照明光源ペア数に相当する人数が3次元映像を見ることができる。
<実施形態4>
実施形態1から3の装置において、照明光源5、6の発光パターンを相互に重なり合わない範囲で長方形、楕円形その他任意の形状で余裕を持った大きさとすることにより視域を拡大したもの。
<実施形態5>
実施形態1から4の装置において、一組あるいは複数組の照明光源5、6のペアの位置を自動あるいは手動にて移動可能とした装置。応用例として、図7のように観察者15の頭部位置を計測装置16にて計測し、その結果により、自動ステージ18を制御し、取り付けられた照明光源5、6を自動的に最適位置に移動すると、観察者15が頭部を移動しても常に最適の画像を見ることができる。
<実施形態6>
実施形態1から4の装置において、照明光源5、6のペアの代わりに、白色発光ダイオードのマトリクス配置などにより製作した、任意のパターンに発光可能な面状発光ユニット20を用い、実施の形態2に用いるときは偏光フィルターを組み合わせて構成された装置。図8の例のようなパターンにて面状発光ユニット20を発光させると、発光パターンに応じた観察視点範囲パターン7L、7Rが得られる。また、発光位置を変えることにより、ステージなどの機械的移動なしに視点位置のアジャストができ、複数パターンの発光を行なうことにより、複数人で観察することもできる。この方法により実施形態4の実現も容易になる。
<実施形態7>
実施形態1から6の装置において、照明光源と観察視点の位置を相互に交換したもの。交換前のものと同等の機能が得られる。
【0006】
【発明の効果】
本発明により、専用眼鏡を使用せず、高画質の3次元映像を容易に観察することが可能になる。また、従来の方式では困難だった視域の拡大や複数人の観察も容易にできるようになる。
【図面の簡単な説明】
【図1】本発明の表示デバイスの構成要素を表す見取図
【図2】実施形態1の構成を説明する見取図
【図3】実施形態1の光路を説明する見取図
【図4】実施形態2の構成を説明する見取図
【図5】実施形態2の光路を説明する見取図
【図6】実施形態3の構成を説明する見取図
【図7】実施形態5の構成を説明する見取図
【図8】実施形態6の構成を説明する見取図
【符号の説明】
1.液晶表示素子
2.回帰反射スクリーン
3.表示デバイス
4.ハーフミラー
5.左眼画像用照明光源
6.右眼画像用照明光源
7L.左眼観察視点位置
7R.右眼観察視点位置
8.照明ドライバー
9.左眼画像用照明光源から出た照明光
10.右眼画像用照明光源から出た照明光
11.左眼画像用表示デバイス
12.右眼画像用表示デバイス
13.照明光源に設ける偏光フィルター
14.表示素子に必要に応じて追加する偏光フィルター
15.観察者
16.計測装置
17.制御装置
18.自動ステージ
19.発光パターンドライバー
20.面状発光ユニット
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device capable of observing a three-dimensional image without special glasses.
[0002]
[Prior art]
Conventionally, observation of a three-dimensional image required special glasses and was cumbersome. In the case of the system without glasses, a lenticular lens or the like whose image quality is deteriorated is used, or only a lens having a very narrow viewing area is used.
[0003]
[Problems to be solved by the invention]
To be able to observe high-quality three-dimensional images without using special glasses, and to have a sufficient viewing area.
[0004]
[Means for Solving the Problems]
1. When presenting an image to the left and right eyes in a time-sharing manner (a) A retroreflective screen is provided adjacent to the back of a transmissive non-light emitting display element such as a liquid crystal display element.
(B) A half mirror is provided diagonally before the display element.
(C) A virtual left-eye observation viewpoint position and a right-eye observation viewpoint position are set at positions where the display element can be seen through the half mirror and separated by the distance between the normal human eyes.
(D) The illumination light sources for the left-eye image and the right-eye image are installed at positions that are symmetric with respect to the left-eye and right-eye observation viewpoint positions with respect to the half mirror.
(E) The liquid crystal surface is illuminated by reflecting the illumination light source to the half mirror. As for lighting of the light source, the left-eye image illumination is turned on while the left-eye image is displayed in a time-sharing manner, and the right-eye image illumination is turned on while the right-eye image is displayed.
(F) The same function can be obtained even if the observation point and the position of the illumination light source are interchanged.
2. When presenting an image simultaneously to the left and right eyes (a) Two display devices each having a retroreflective screen adjacent to the back of a transmissive non-light-emitting display device such as a liquid crystal display device, and a half mirror provided diagonally between them The two display devices are arranged so as to be symmetrical with respect to the half mirror. At this time, the two types of display devices are configured so that the directions of the polarization characteristics thereof are different from each other when viewed from the half mirror. In the case of non-polarization or weak polarization characteristics, a polarizing filter is added to the front or back surface of the display element.
(B) A virtual left-eye observation viewpoint position and a right-eye observation viewpoint position are set at positions where the two types of display devices can be seen by transmission and reflection of the half mirror, and separated by the distance between normal human eyes.
(C) The illumination light sources for the left-eye image and the right-eye image are installed at positions symmetrical to the left-eye and right-eye observation viewpoint positions with respect to the half mirror.
(D) A polarizing filter is provided for each of the left-eye image illumination and the right-eye image illumination. The polarizing filter for the left-eye image illumination is installed in the polarization direction in which the left-eye image display device becomes visible when the illumination is turned on, and the right-eye image illumination polarization filter is used for the right-eye image display device. Are respectively set in the polarization directions in which is visible.
(E) The images displayed on the left-eye image display device and the right-eye image display device are oriented so that the upper, lower, left, and right images are normal when viewed from the observation viewpoint position.
(F) The left-eye image and the right-eye image are simultaneously input to the left-eye image display device and the right-eye image display device of the apparatus configured as described below, and the left-eye image illumination and the right-eye image are input. The image lighting is continuously turned on, and the left and right eyes are respectively adjusted to the left eye viewpoint position and the right eye viewpoint position to observe a three-dimensional image.
(G) The same function can be obtained even if the observation viewpoint position and the illumination light source position are interchanged.
3. When a plurality of persons are to be observed, a plurality of pairs of a left-eye image illumination light source and a right-eye image illumination light source are provided at a distance of at least the size of a human head.
4. In the case of responding to the movement of the observer (a) The pair of the left-eye image illumination light source and the right-eye image illumination light source is moved by an automatic stage or the like.
(B) A planar light emitting unit capable of emitting light in an arbitrary pattern is used as an illumination light source, and the light emitting position is changed to provide the same effect as (a).
[0005]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with an example. Note that embodiments of the present invention are not limited to the following examples.
<First embodiment>
As shown in FIG. 1, a retroreflective screen 2 is closely mounted on the back surface of the liquid crystal display element 1 instead of a backlight to form a display device 3. As shown in FIG. 2, a half mirror 4 is provided in front of the display element so as to be obliquely inclined toward the observation viewpoint. At a position where the display device 3 can be viewed through the half mirror 4, a virtual left-eye observation viewpoint position 7L and a right-eye observation viewpoint position 7R separated by a distance of about 65 mm between the human left and right eyes are set. The left-eye image illumination light source 5 and the right-eye image illumination light source 6 are installed at positions symmetrical to the observation viewpoint positions 7L and 7R with respect to the half mirror 4. The lighting timing of the illumination is synchronized with the display of the image for the left eye and the image for the right eye by time division. The illumination light source 5 for the left eye image is displayed for the image display time for the left eye, and the right light source is displayed for the image display time for the right eye. The illumination light source 6 for the eye image is turned on. A time-division three-dimensional image is input to the apparatus configured as described above, and the image is displayed on the display device 3 and the illumination driver 8 turns on the left and right illumination in synchronization with the image. In operation, the illumination light 9 emitted from the left-eye image illumination light source 5 is reflected by the half mirror 4, illuminates the display device 3 and transmits through the display element 1 as shown in FIG. And a part of the light passes through the half mirror 4 to reach the left eye observation viewpoint position 7L. The illumination light 10 emitted from the right-eye image illumination light source 6 also reaches the right-eye observation viewpoint position 7R. Now, when viewing the display device 3 with the left eye at the left-eye observation viewpoint position 7L and the right eye at the right-eye observation viewpoint position 7R, an image for the left eye is displayed on the left eye in time-division timing of the video. Since the right-eye images alternately appear to the right eye, a three-dimensional image can be observed without special glasses.
<Embodiment 2>
As in the first embodiment, two display devices each having a retroreflective screen 2 combined as shown in FIG. 1 are used. One display is a display device 11 for a left eye image and another is a display device for a right eye image as shown in FIG. The device 12 is provided, and the half mirror 4 is provided obliquely between them, and the two types of display devices 11 and 12 are arranged so as to be symmetrical with respect to the half mirror 4. At this time, the two display devices 11 and 12 are arranged so that the directions of the polarization characteristics thereof are different from each other when viewed from the half mirror 4. In the case of non-polarization, weak polarization characteristics, or the same polarization characteristics due to the arrangement, if necessary, a polarizing filter may be provided on the front surface or the rear surface of one or both of the display devices 11 and 12. 14 is added. A virtual left-eye observation viewpoint position 7L and a right-eye observation viewpoint position 7R are set at positions where the display devices 11 and 12 can be seen by transmission and reflection of the half mirror 4 and separated by about 65 mm between human left and right eyes. I do. The left-eye image illumination light source 5 and the right-eye image illumination light source 6 are installed at positions respectively symmetrical with respect to the half mirror 4 with the left-eye observation viewpoint position 7L and the right-eye observation viewpoint position 7R. Each of the left-eye image illumination light source 5 and the right-eye image illumination light source 6 is provided with a polarizing filter 13. The attachment direction of the polarizing filter 13 is a polarization direction in which the left-eye image display device 11 is visible when the illumination is turned on in the left-eye image illumination light source 5 and the right-eye image is turned on when the right-eye image illumination light source 6 is turned on. Is set in a direction in which the display device 12 becomes visible. The left-eye image and the right-eye image are input to the left-eye image display device 11 and the right-eye image display device 12 of the apparatus configured as described above in synchronization with the left and right images. The illumination light sources 5 and 6 are continuously turned on. In operation, the illumination light 9 emitted from the left-eye image illumination light source 5 is polarized by a polarization filter 13 as shown in FIG. 5, is reflected by a half mirror 4, and has the same polarization direction. After illuminating the display device for use 11 and transmitting through the display element 1, the light is reflected by the regression reflection screen 2 and regressed, and a part of the light passes through the half mirror 4 to reach the left eye observation viewpoint position 7L. The light that has passed through the half mirror 4 and directed the right-eye image to the display device 12 is blocked by the polarization characteristics and does not reach the retroreflective screen. Similarly, the illumination light 10 emitted from the illumination light source 6 for the right eye image passes through the half mirror 4, is reflected by the display device 12 recursively, is reflected by the half mirror 4, and reaches the right eye observation viewpoint position 7R. Light that has reached the display device 11 by half-mirror reflection is also blocked by polarization characteristics and does not return-reflect. Now, when the left eye is observed at the left eye observation viewpoint position 7L and the right eye is observed at the right eye observation viewpoint position 7R, an image for the left eye is seen by the left eye, and an image for the right eye is seen by the right eye. Therefore, three-dimensional images can be observed without special glasses. In addition, when viewed from the observation viewpoint, it is necessary to set the display device or the input signal in advance so that both the left-eye image and the right-eye image become upper, lower, left, and right images.
<Embodiment 3>
In the apparatuses of the first and second embodiments, both sides of the display device are enlarged, and a pair of the left-eye image illumination light source 5 and the right-eye image illumination light source 6 is used in the first embodiment as it is, and in the second embodiment, a polarizing filter is used. 13. A device in which a plurality of sets are added with at least the interval of at least the size of the human head. By doing so, one person can simultaneously view three-dimensional images by the number of pairs of illumination light sources.
<Embodiment 4>
In the device according to the first to third embodiments, the viewing area is enlarged by making the light emitting patterns of the illumination light sources 5 and 6 rectangular or elliptical or any other shape having a sufficient size as long as they do not overlap each other.
<Embodiment 5>
An apparatus according to any one of Embodiments 1 to 4, wherein the position of one or a plurality of pairs of the illumination light sources 5, 6 can be automatically or manually moved. As an application example, the head position of the observer 15 is measured by the measuring device 16 as shown in FIG. 7, and based on the result, the automatic stage 18 is controlled, and the attached illumination light sources 5 and 6 are automatically adjusted to the optimal positions. , The optimal image can always be seen even if the observer 15 moves his / her head.
<Embodiment 6>
Embodiment 2 In the devices of Embodiments 1 to 4, instead of the pair of illumination light sources 5 and 6, a planar light emitting unit 20 that can emit light in an arbitrary pattern manufactured by a matrix arrangement of white light emitting diodes or the like is used. When used for a device, a device configured by combining a polarizing filter. When the planar light-emitting unit 20 emits light in a pattern as in the example of FIG. 8, the observation viewpoint range patterns 7L and 7R corresponding to the light-emitting pattern are obtained. In addition, by changing the light emitting position, the viewpoint position can be adjusted without mechanical movement of the stage or the like. By emitting light in a plurality of patterns, it is possible to observe by a plurality of persons. This method also facilitates implementation of the fourth embodiment.
<Embodiment 7>
In the apparatus according to the first to sixth embodiments, the positions of the illumination light source and the observation viewpoint are interchanged. A function equivalent to that before replacement is obtained.
[0006]
【The invention's effect】
According to the present invention, it is possible to easily observe a high-quality three-dimensional video without using special glasses. In addition, it becomes possible to easily enlarge a viewing area and observe a plurality of persons, which are difficult in the conventional method.
[Brief description of the drawings]
FIG. 1 is a sketch showing constituent elements of a display device of the present invention. FIG. 2 is a sketch explaining a configuration of Embodiment 1. FIG. 3 is a sketch explaining an optical path of Embodiment 1. FIG. FIG. 5 is a sketch explaining the optical path of the second embodiment. FIG. 6 is a sketch explaining the configuration of the third embodiment. FIG. 7 is a sketch explaining the configuration of the fifth embodiment. FIG. 8 is a sixth embodiment. Schematic diagram explaining the configuration of [Description of symbols]
1. 1. Liquid crystal display element 2. retroreflective screen Display device4. Half mirror5. 5. Light source for left eye image Right eye image illumination light source 7L. Left eye observation viewpoint position 7R. 7. Right eye observation viewpoint position Lighting driver 9. 9. Illumination light emitted from the left eye image illumination light source 10. Illumination light emitted from the illumination light source for the right eye image Display device for left eye image 12. Display device for right eye image 13. 13. Polarization filter provided for illumination light source 14. A polarizing filter added to the display element as needed. Observer 16. Measuring device 17. Control device 18. Automatic stage 19. Light emitting pattern driver 20. Surface light emitting unit

Claims (6)

液晶表示素子1の背面に隣接して回帰反射スクリーン2を設けたものを表示デバイス3とし、その正面に斜めにハーフミラー4を設け、ハーフミラーを通して表示デバイス3を見ることができる位置に、通常のヒトの両眼間隔に合わせた仮想の、左眼観察視点位置7Lおよび右眼観察視点位置7Rを設定し、両視点位置のハーフミラー4に関して対称の位置に左眼画像用照明光源5および右眼画像用照明光源6を設け、表示デバイス3に時分割方式3次元映像信号を入力すると共に、左眼用画像が表示デバイス3に表示されている時間には、左眼画像用照明光源5を点灯しハーフミラー4に反射させ表示デバイス3を照明し、右眼用画像が表示されている時間には、右眼画像用照明光源6を点灯し同様に照明し、左眼視点位置に左眼を、右眼視点位置に右眼を合わせて3次元映像を観察する3次元映像表示装置。The display device 3 is provided with a retroreflective screen 2 adjacent to the back surface of the liquid crystal display element 1, and a half mirror 4 is provided diagonally in front of the display device 3. The left eye observation viewpoint position 7L and the right eye observation viewpoint position 7R are set in accordance with the human's binocular distance, and the left eye image illumination light source 5 and the right eye observation right and left positions are symmetrical with respect to the half mirror 4 at both viewpoint positions. An illumination light source for eye image 6 is provided, a time-division three-dimensional video signal is input to the display device 3, and the illumination light source for left eye image 5 is turned on when the image for left eye is displayed on the display device 3. When the display device 3 is illuminated and reflected by the half mirror 4 to illuminate the display device 3 and the right-eye image is displayed, the right-eye image illumination light source 6 is illuminated and similarly illuminated. The right eye Observe three-dimensional image display device a 3D image by combining the right-eye point position. 液晶表示素子1の背面に隣接して回帰反射スクリーン2を設けた表示デバイス2式を用い、うち1式を左眼画像用表示デバイス11、もう1式を右眼画像用表示デバイス12とし、両者の間にハーフミラー4を斜めに設け、ハーフミラー4に関して2式の表示デバイス11、12の位置が対称でかつ、ハーフミラー4から見たとき、その偏光特性の方向が相互に異なった向きとなるように配置し、偏光特性の差異が不充分なときは、必要に応じて偏光フィルター14を追加し、ハーフミラー4を見て透過および反射にて表示デバイス11、12が見える位置に、通常のヒト両眼間隔に合わせた、仮想の左眼観察視点位置7Lおよび右眼観察視点位置7Rを設定し、両視点位置のハーフミラー4に関して対称の位置に左眼画像用照明光源5および右眼画像用照明光源6を設け、各々に偏光フィルター13を設け、光源を点灯したとき左眼画像用照明光源5においては左眼画像用表示デバイス11が、右眼画像用照明光源6においては右眼画像用表示デバイス12がそれぞれ可視となる方向に偏光フィルター13の向きを設定し、左眼画像用表示デバイス11には左眼用映像信号を、右眼画像用表示デバイス12には右眼用映像信号を、それぞれ視点位置から見て上下左右正像となるように入力し、光源5、6を点灯した状態で、左眼を左眼観察視点位置7L、右眼を右眼観察視点位置7Rにそれぞれ合わせて3次元映像を観察する3次元映像表示装置。Two types of display devices having a retroreflective screen 2 provided adjacent to the back of the liquid crystal display element 1 are used. One type is a display device 11 for a left-eye image and the other type is a display device 12 for a right-eye image. The two types of display devices 11 and 12 are symmetrical with respect to the half mirror 4, and when viewed from the half mirror 4, the directions of the polarization characteristics thereof are different from each other. When the difference in polarization characteristics is insufficient, a polarization filter 14 is added as necessary, and the display devices 11 and 12 can be viewed at a position where the display devices 11 and 12 can be seen through transmission and reflection while viewing the half mirror 4. The virtual left-eye observation viewpoint position 7L and the right-eye observation viewpoint position 7R are set in accordance with the human binocular distance, and the left-eye image illumination light source 5 and the left-eye image illumination light source 5 and A right-eye image illumination light source 6 is provided, a polarizing filter 13 is provided for each, and when the light sources are turned on, a left-eye image display device 11 is provided in the left-eye image illumination light source 5 and a right-eye image illumination device 6 is provided in the right-eye image illumination light source 6 The direction of the polarizing filter 13 is set so that the right-eye image display device 12 becomes visible, and the left-eye image signal is supplied to the left-eye image display device 11, and the right-eye image signal is supplied to the right-eye image display device 12. Video signals are input so that they become normal images in the up, down, left, and right directions when viewed from the viewpoint positions. With the light sources 5 and 6 turned on, the left eye is the left eye observation viewpoint position 7L, and the right eye is the right eye observation viewpoint position. A three-dimensional image display device for observing a three-dimensional image according to each of the 7Rs. 請求項1および2の装置において、左眼画像用照明光源5と右眼画像用照明光源6のペアを複数組設置し、複数人の観察を可能にした3次元映像表示装置。3. A three-dimensional video display apparatus according to claim 1, wherein a plurality of pairs of a left-eye image illumination light source 5 and a right-eye image illumination light source 6 are installed to allow a plurality of persons to observe. 請求項1から3の装置において、照明光源の発光部形状を長方形、楕円形、もしくは任意の形状で、任意の大きさとし視域の拡大を図った3次元映像表示装置。4. A three-dimensional video display device according to claim 1, wherein the shape of the light emitting portion of the illumination light source is rectangular, elliptical, or arbitrary, and has an arbitrary size to enlarge the viewing area. 請求項1から4の装置において一組あるいは複数組の照明光源5、6のペアの位置を自動もしくは手動の方法で移動し、観察者の視点位置の変化に対応可能とした3次元映像表示装置。5. A three-dimensional video display device according to claim 1, wherein the position of one or a plurality of pairs of illumination light sources (5, 6) is moved by an automatic or manual method so as to be able to respond to a change in the viewpoint position of an observer. . 請求項1から4の装置において、照明光源として任意のパターンに発光可能な面状発光ユニット20を、請求項1の装置に用いるときはそのまま、請求項2の装置に用いるときは偏光フィルターを組み合わせて、照明光源5、6の代わりに用い、面状発光ユニット20の発光位置、発光パターンを変更することにより、請求項3の複数人対応と同等の効果を実現し、請求項4の任意の発光部形状を実現し、また、請求項5における照明光源の移動と同様の効果を機械的移動なしに実現する3次元映像表示装置。In the apparatus according to any one of claims 1 to 4, the planar light emitting unit 20 capable of emitting light in an arbitrary pattern as an illumination light source is used as it is when used in the apparatus according to claim 1, and combined with a polarizing filter when used in the apparatus according to claim 2. By using the light sources instead of the illumination light sources 5 and 6 and changing the light emitting position and the light emitting pattern of the planar light emitting unit 20, an effect equivalent to that of the third embodiment can be realized. A three-dimensional image display device that realizes a light emitting portion shape and realizes the same effect as the movement of the illumination light source according to claim 5 without mechanical movement.
JP2002206275A 2002-06-11 2002-06-11 Three-dimensional video display device Pending JP2004015793A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100694502B1 (en) * 2005-09-29 2007-03-13 (주)세븐데이타 Solid vedio displayer
WO2008029985A1 (en) * 2006-09-08 2008-03-13 Seven Data Co., Ltd. Stereographic imaging device using two lcd panel having same polarizing angle
WO2008029984A1 (en) * 2006-09-08 2008-03-13 Seven Data Co., Ltd Stereographic imaging device without image mirror and the manufacturing method thereof
KR100816078B1 (en) 2006-06-19 2008-03-24 광운대학교 산학협력단 Apparatus and method for virtual showcase
JP2009163032A (en) * 2008-01-08 2009-07-23 Nanao Corp Stereoscopic image display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100694502B1 (en) * 2005-09-29 2007-03-13 (주)세븐데이타 Solid vedio displayer
KR100816078B1 (en) 2006-06-19 2008-03-24 광운대학교 산학협력단 Apparatus and method for virtual showcase
US8115803B2 (en) 2006-06-19 2012-02-14 Kwangwoon University Research Institute For Industry Cooperation Apparatus and method for projecting spatial image
WO2008029985A1 (en) * 2006-09-08 2008-03-13 Seven Data Co., Ltd. Stereographic imaging device using two lcd panel having same polarizing angle
WO2008029984A1 (en) * 2006-09-08 2008-03-13 Seven Data Co., Ltd Stereographic imaging device without image mirror and the manufacturing method thereof
JP2009163032A (en) * 2008-01-08 2009-07-23 Nanao Corp Stereoscopic image display device

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