JP2843087B2 - 3D image display device - Google Patents
3D image display deviceInfo
- Publication number
- JP2843087B2 JP2843087B2 JP2018994A JP1899490A JP2843087B2 JP 2843087 B2 JP2843087 B2 JP 2843087B2 JP 2018994 A JP2018994 A JP 2018994A JP 1899490 A JP1899490 A JP 1899490A JP 2843087 B2 JP2843087 B2 JP 2843087B2
- Authority
- JP
- Japan
- Prior art keywords
- modulating means
- light
- image
- dimensional
- dimensional light
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
- G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/388—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume
- H04N13/395—Volumetric displays, i.e. systems where the image is built up from picture elements distributed through a volume with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/023—Display panel composed of stacked panels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は立体画像表示装置に係り、特に偏光眼鏡や
液晶シャッタ眼鏡などの不要な眼鏡なし立体画像表示装
置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic image display device, and more particularly to a stereoscopic image display device without unnecessary glasses such as polarized glasses and liquid crystal shutter glasses.
（発明の概要） この発明は眼鏡なし立体画像表示装置に関するもの
で、画素ごとに光の遮蔽または透過を制御できる複数枚
の２次元光変調手段を用意し、これら複数枚の２次元光
変調手段を奥行き方向に並置し、別に設けた制御装置で
これら２次元光変調手段を制御し、光の透過、遮蔽の制
御によって立体画像を表示している。(Summary of the Invention) The present invention relates to a three-dimensional image display device without glasses, in which a plurality of two-dimensional light modulating means capable of controlling light shielding or transmission for each pixel are prepared, and these plural two-dimensional light modulating means are provided. Are arranged side by side in the depth direction, and these two-dimensional light modulation means are controlled by a separately provided control device, and a stereoscopic image is displayed by controlling the transmission and blocking of light.
かくすることにより自然な運動視差をともなった視点
位置の制限が少ない眼鏡なし立体画像表示装置の提供を
可能としている。By doing so, it is possible to provide a stereoscopic image display device without glasses that has a small restriction on the viewpoint position with natural motion parallax.
（従来の技術） 従来の眼鏡なし立体画像表示装置には以下のようなも
のがあった。(Prior Art) Conventional stereoscopic image display devices without glasses include the following.
まず、通常のCRTなどのディスプレイ上にかまぼこ形
のレンチキュラーレンズか、または縦格子を張り付け、
ある目の位置において、ディスプレイ上の一部の領域し
か見えないような光学的位置関係を作る。このとき、左
と右の目が存在する空間的位置が違うので、それぞれデ
ィスプレイ上の異なった部分が見える。このとき、ディ
スプレイ上の左目によってみられている部分に左目用の
画像を、右目によってみられている部分に右目用の画像
を表示すれば、観察者は眼鏡なしで立体視ができる。こ
のことは、いろいろな目の位置に対応する画像をディス
プレイ上に多重しているともいえる。First, attach a lenticular lens or vertical lattice in the shape of a cylinder on a display such as a normal CRT,
At an eye position, an optical positional relationship is created such that only a partial area on the display is visible. At this time, since the left and right eyes are located at different spatial positions, different portions on the display can be seen. At this time, if the image for the left eye is displayed on the portion viewed by the left eye on the display, and the image for the right eye is displayed on the portion viewed by the right eye, the observer can perform stereoscopic viewing without glasses. This means that images corresponding to various eye positions are multiplexed on the display.
上述のことを添付第６図、第７図を参照してやや詳細
に説明する。第６図はディスプレイ面DPSに縦格子VMSを
取付けたときの位置関係を示し、ディスプレイの真上の
位置からみた図である。ディスプレイ面上にa,b,c,dと
いう４つの画像Ｐを第７図のように多重表示するとす
る。このディスプレイDPSを第６図のように適当な縦格
子VMSでおおうと、領域P1,P2,PL,P3,PR,P4,P5の各領域
はそれぞれａだけ見える領域、ａとｂが見える領域、ｂ
だけが見える領域、ｂとｃが見える領域、ｃだけが見え
る領域、ｃとｄが見える領域、ｄだけが見える領域とな
り、観察位置によっては、a,b,c,dのどれか１つの画像
しか見えなくなる。例えば第６図の領域PLの位置に左目
が、領域PRの位置に右目が存在するときは、左目には画
像ｂが右目には画像ｃのみが見えることになる。従って
あらかじめ画像b,cにそれぞれ左目用、右目用の画像を
表示しておけば、眼鏡なしで立体視ができることいな
る。以上が従来の眼鏡なし立体画像表示の原理的な考え
方である。The above will be described in some detail with reference to FIGS. 6 and 7. FIG. 6 shows a positional relationship when the vertical lattice VMS is attached to the display surface DPS, as viewed from a position directly above the display. Assume that four images P, a, b, c, and d, are multiplexed and displayed on the display surface as shown in FIG. When this display DPS is covered with an appropriate vertical lattice VMS as shown in FIG. 6, each of the areas P 1 , P 2 , P L , P 3 , P R , P 4 , and P 5 is an area where only a can be seen. Area where a and b can be seen, b
An area where only one can see, an area where only b and c can be seen, an area where only c can be seen, an area where only c and d can be seen, and an area where only d can be seen. Depending on the observation position, any one of a, b, c, and d images I can only see it. For example the left eye at the position of the region P L of FIG. 6 is, when the right eye at the position of the region P R, the image b in the left eye so that only the image c is visible to the right eye. Therefore, if the images for the left eye and the right eye are respectively displayed on the images b and c in advance, stereoscopic vision can be performed without glasses. The above is the principle of the conventional stereoscopic image display without glasses.
（発明が解決しようとする課題） 従来の技術には次のような点で問題がある。(Problems to be Solved by the Invention) The conventional technology has problems in the following points.
第１に、いろいろな目の位置に対応する画像をディス
プレイ上に多重しているので、多重化した割合で解像度
が低下する。例えば、水平解像度が600本のディスプレ
イ上で左目用と右目用の２つの画像を多重化すると、片
目にはいる画像の水平解像度は300本になる。また、第
６図の例では画像を４つ多重化しているので、150本に
なる。このように多重化すればするぼど見える画像の解
像度が低下する。First, since images corresponding to various eye positions are multiplexed on the display, the resolution decreases at the multiplexing ratio. For example, when two images for the left eye and the right eye are multiplexed on a display having 600 horizontal resolutions, the horizontal resolution of the image in one eye is 300 lines. In the example of FIG. 6, four images are multiplexed, so that the number is 150. Such multiplexing lowers the resolution of the blurred image.
第２に、観察位置が限定されることである。第６図で
破線で示した点QLの位置に左目が、QRの位置に右目が存
在する場合、左目には画像a,bの２つが、右目には画像
c,dの２つが入り、極めて不自然な見えかたになる。Second, the observation position is limited. Sixth left to the position of a point Q L indicated by the broken line in figure, when there is the right eye at the position of the Q R, the image a is the left eye, two of b, the right-eye image
Both c and d are included, giving a very unnatural appearance.
以上は、ディスプレイ上に縦格子を張り付ける従来方
式の問題点であるが、レンチキュラーレンズを張りつけ
る従来方式でも全く同様の問題点がある。The above is the problem of the conventional method of attaching the vertical lattice on the display, but the conventional method of attaching the lenticular lens has the same problem.
このような問題点が生じる原因は、ディスプレイ面上
にいろいろな目の位置に対応する画像を多重しているこ
とにある。The cause of such a problem is that images corresponding to various eye positions are multiplexed on the display surface.
そこで本発明の目的は、上述の諸問題を解決し、自然
な運動視差をともなった視点位置の制限が少ない眼鏡な
し立体画像表示装置を提供せんとするものである。Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a stereoscopic image display device without glasses that has a natural motion parallax and has little restriction on the viewpoint position.
（課題を解決するための手段） この目的を達成するために本発明に係る立体画像表示
装置は、奥行き方向に並置され画素ごとに光の遮蔽また
は透過を制御できる複数枚の２次元光変調手段と、該奥
行き方向に並置された複数枚の２次元光変調手段を制御
する２次元光変調手段用制御装置とを具えてなる立体画
像表示装置において、前記２次元光変調手段用制御装置
は、前記奥行き方向に並置された複数枚の２次元変調手
段のうちの１枚の２次元光変調手段を主変調手段として
選択し、主変調手段では画像を表示させ、観察者を基準
にして主変調手段より遠い位置にある２次元光変調手段
では光を透過させ、観察者を基準にして主変調手段より
近い位置にある２次元光変調手段では別に生成した背景
信号に基づいて光を遮蔽させ、かつすべての２次元光変
調手段を時分割で主変調手段とするように構成させてい
ることを特徴とするものである。(Means for Solving the Problems) In order to achieve this object, a three-dimensional image display device according to the present invention is provided with a plurality of two-dimensional light modulating means which are juxtaposed in the depth direction and can control light shielding or transmission for each pixel. A three-dimensional image display device comprising: a two-dimensional light modulation means control device for controlling a plurality of two-dimensional light modulation means arranged side by side in the depth direction, wherein the two-dimensional light modulation means control device comprises: One of the two-dimensional light modulating means of the plurality of two-dimensional modulating means juxtaposed in the depth direction is selected as a main modulating means, an image is displayed on the main modulating means, and the main modulation is performed on the basis of an observer. The two-dimensional light modulating means located farther from the means transmits light, and the two-dimensional light modulating means located closer to the main modulating means with respect to the observer blocks light based on a separately generated background signal, And all It is characterized in that the two-dimensional light modulating means is configured to be a main modulating means by time division.
（作 用） さて、上述のような本発明に係る立体画像表示装置に
よれば、異なる視差に相当する複数の画像を、従来例の
平面配列と異なって奥行き方向に多重化しているので、
解像度の低下もなく、自然な運動視差をともなった、視
点位置の制限が少ない立体画像の表示が可能となる。(Operation) According to the three-dimensional image display device according to the present invention as described above, a plurality of images corresponding to different parallaxes are multiplexed in the depth direction differently from the conventional planar arrangement.
It is possible to display a stereoscopic image with a natural motion parallax without a decrease in the resolution and with a small restriction on the viewpoint position.
（実施例） 以下添付図面を参照し実施例により本発明を詳細に説
明するが、この実施例の説明にはいる前に本発明に係る
立体画像表示装置の原理的な事項の説明をする。(Example) Hereinafter, the present invention will be described in detail by way of examples with reference to the accompanying drawings. Before entering into the description of the examples, the principle matters of the stereoscopic image display device according to the present invention will be described.
本発明表示装置の基本構成を示す第１図を参照して説
明する。まず、画素ごとに乗面からの光の透過状態を制
御することができるような２次元光変調手段Qm（ｍ＝1,
2,……,n）を用意する。ここでいう透過状態とは、光の
波長特性を含んだ透過率であり、透過状態の制御とは透
過する光の強さや色を画素ごとに変えるという意味であ
る。この２次元光変調手段を、第１図のように奥行き方
向にｎ枚並べる。この表示装置を見る観察者にとって最
も手前側、すなわち第１図で最も前面側に位置する２次
元光変調手段をQ1とし、その後面側に位置する２次元光
変調手段をQ2とし、以下同様にしてQnまで番号をつけ
る。そこで、Q1〜Qnまでの各２次元光変調手段を次のよ
うに制御することで、立体画像が表示される。A description will be given with reference to FIG. 1 showing the basic configuration of the display device of the present invention. First, two-dimensional light modulation means can control the transmission state of light from Nomen for each pixel Q m (m = 1,
2, ……, n) are prepared. Here, the transmission state is a transmittance including wavelength characteristics of light, and the control of the transmission state means that the intensity and color of transmitted light are changed for each pixel. As shown in FIG. 1, n two-dimensional light modulators are arranged in the depth direction. The two-dimensional light modulating means located closest to the viewer, ie, the frontmost side in FIG. 1, is Q 1 and the two-dimensional light modulating means located on the rear side is Q 2. Similarly, number up to Q n . Therefore, a stereoscopic image is displayed by controlling each of the two-dimensional light modulating means Q 1 to Q n as follows.
すなわち、まず、各２次元光変調手段Q1〜Qnを次のう
な基準で、主変調手段、副変調手段、無変調手段、及び
主変調手段の一種である最後面主変調手段の４種類に分
類する。時分割で変化する値ｍ（ｍ＝1,2,……,n）に対
して、２次元光変調手段Qmは時分割で順次に主変調手段
又は最後面主変調手段となる。ここでｍ＜ｎのときの２
次元光変調手段Qmは主変調手段とし、またｍ＝ｎのとき
の２次元光変調手段Qmは最後面主変調手段とする。また
Qm以外の２次元光変調手段について、ｋ＜ｍなる２次元
光変調手段Qkは副変調手段、残りのｋ＜ｍなる２次元光
変調手段Qkは無変調手段とする。最後面主変調手段Q
m（ｍ＝ｎ）は、画像信号Smをそのまま表示する。すな
わち、画像の明るい部分は光を多く透過し、暗い部分は
少なく透過するように動作する。主変調手段Qm（ｍ＜
ｎ）は、画像信号Sm中のある画像が被写体である場合に
は、その画素について最後面主変調手段と同様に表示
し、その他の場合は、透過せず遮蔽するように動作す
る。副変調手段Qk（ｋ＜ｍ）は、画像信号Sk中のある画
素が被写体である場合に、その画素について光を透過せ
ず遮蔽し、その他の場合は、透過するように動作する。
また無変調手段Qk（ｋ＞ｍ）は、無条件で光を透過す
る。以上のようにして、ある与えられたｍ（主変調手段
または最後面主変調手段となる２次元光変調手段の番
号）に対する各２次元光変調手段Qkの動作が決まる。そ
こで、画像のフィールド単位でｍの値を１からｎまで時
分割で変化させると、立体画像が表示されることにな
る。That is, first, each of the two-dimensional light modulating means Q 1 to Q n is classified into four types of main modulating means, sub-modulating means, non-modulating means, and rear-surface main modulating means which is a kind of main modulating means, based on the following criteria. Classify into. Time varying division value m (m = 1,2, ......, n) with respect to, sequentially as the main modulation means or end face main modulating means 2-dimensional light modulation means Q m in time division. Here, when m <n, 2
Dimension light modulating means Q m is the main modulation means and two-dimensional light modulating means Q m in the case of m = n is the last face main modulating means. Also
For two-dimensional light modulation means other than Q m, k <m becomes 2-dimensional light modulation means Q k sub modulation means, the remaining k <m becomes 2-dimensional light modulation means Q k and unmodulated means. Last plane main modulation means Q
m (m = n) displays the image signal Sm as it is. That is, an operation is performed such that a bright portion of an image transmits more light and a dark portion transmits less light. Main modulation means Q m (m <
n), if an image with the image signal S m is subject displays similarly to the rearmost main modulating means for that pixel, otherwise, operate to shield not transmitted. The sub-modulation means Q k (k <m) operates such that when a certain pixel in the image signal S k is a subject, the pixel is blocked from transmitting light, and otherwise is transmitted.
The non-modulation means Q k (k> m) transmits light unconditionally. As described above, the operation of each of the two-dimensional light modulating means Q k for a given m (primary modulation means or number of the two-dimensional light modulation means and final surface main modulating means) is determined. Therefore, when the value of m is changed from 1 to n in a time-division manner on a field basis of the image, a stereoscopic image is displayed.
第１図で２次元光変調手段用制御装置CDは上述の制御
をすべて含むもので、その入力には後の実施例の説明で
明らかにされる２次元画像信号Sm（ｍ＝1,2,……，）
ｎ、及び背景信号Rm（ｍ＝1,2,……,n−１）が入力され
て各２次元光変調手段を制御する信号として使用され
る。また、第１図に示されている光源Lsは本発明構成の
必須用件では必ずしもなく、存在する場合は２次元的に
一様な照度の発光板でもよい。In FIG. 1, the control device CD for two-dimensional light modulation means includes all the above-mentioned controls, and its input is a two-dimensional image signal S m (m = 1, 2 , ……,)
n and a background signal R m (m = 1, 2,..., n−1) are input and used as signals for controlling each two-dimensional light modulation unit. The light source L s shown in Figure 1 is not necessarily an essential requirements of the present invention configuration, when present may be a light emitting plate of two-dimensionally uniform illuminance.
第２図に例示した実施例は、２次元光変調手段とし
て、液晶型光変調板を用い、これを奥行き方向に３枚並
べたものである。この液晶型光変調板とは、それに入力
される画像が明るいほど光を透過し、暗いほど光を遮蔽
するようなもので、市販の液晶プロジェクタで用いられ
ているものを用いることができる。In the embodiment illustrated in FIG. 2, a liquid crystal type light modulating plate is used as two-dimensional light modulating means, and three light modulating plates are arranged in the depth direction. The liquid crystal type light modulation plate transmits light as the image input thereto becomes brighter and shields the light as the image becomes darker. A liquid crystal projector used in a commercially available liquid crystal projector can be used.
ここでは理解を容易にするため、液晶型光変調板の枚
数を３とするが、３以外の複数枚の液晶型光変調板を用
いた場合でも同様の説明できる。また以下では、最も前
面側の液晶型光変調板C1に赤色の文字Ｒを、その後側に
ある液晶型光変調板C2に緑色の文字Ｇを、最も後面側に
ある液晶型光変調板C3に青色の文字Ｂを表示した例を述
べる。Here, in order to facilitate understanding, the number of liquid crystal light modulation plates is set to three, but the same description can be applied to the case where a plurality of liquid crystal light modulation plates other than three are used. In the following, most liquid crystal light modulation panel C 1 on the front side of the red character R, then the green text G on the liquid crystal light modulation panel C 2 on the side, the liquid crystal optical modulation plate in the most rear side It describes an example of displaying the blue characters B to C 3.
そこで、本実施例の構成例である第２図を参照しなが
ら説明すると、液晶型光変調板を３枚、液晶型光変調板
の法線方向、すなわち奥行き方向に３枚並べ、最前面
側、すなわち観察者に最も近い液晶型光変調板から順に
C1,C2,C3と番号をつける。また、C3のさらに後面には光
源をおく。Therefore, referring to FIG. 2 which is a configuration example of the present embodiment, three liquid crystal type light modulating plates are arranged in the normal direction of the liquid crystal type light modulating plate, that is, three in the depth direction. That is, in order from the liquid crystal light modulation plate closest to the observer
Put the C 1, C 2, C 3 and number. Also, placing the light source further rear of C 3.
一方、異なる奥行き量にあたる３枚の２次元画像S1,S
2,S3と、各画像中に被写体が存在するかしないかを２値
画像の形で明示する背景信号R1,R2を用意し（画像信号S
3に対する背景信号R3は必要ない）これらを多重化装置M
PDに入力する。ここで、２次元画像S1とS2中の被写体で
ない部分は、黒信号となっているものとする。また背景
信号Rm（ｍ＝1,2）は、画像Sm中の被写体である部分で
は黒信号となり、被写体でない部分では白信号となる。
この、２次元画像信号S1〜S3と背景信号R1〜R2の実施例
を第３図（ａ）〜（ｅ）にそれぞれ示す。On the other hand, three two-dimensional images S 1 , S
2 , S 3 and background signals R 1 , R 2 that indicate in a binary image whether or not a subject exists in each image (image signal S
No background signal R 3 for 3 is needed)
Input to PD. Here, portions not subject in the two-dimensional image S 1 and S 2 is assumed to be a black signal. The background signal R m (m = 1, 2) becomes a black signal in a portion of the image S m which is a subject, and becomes a white signal in a portion which is not a subject.
Examples of the two-dimensional image signals S 1 to S 3 and the background signals R 1 to R 2 are shown in FIGS.
そこで多重化装置MPDは、垂直同期信号を１から３ま
での３値でカウントしたカウント値ｍを外部制御信号と
して、次のような多重化処理を行い、画像Dkを出力す
る。Therefore, the multiplexing device MPD performs the following multiplexing process using the count value m obtained by counting the vertical synchronization signal in three values from 1 to 3 as an external control signal, and outputs an image Dk .
例えば、D2は、白信号（ｍ＝１）→S2（ｍ＝２）→R2
（ｍ＝３）→白信号（ｍ＝１）という３フイールドごと
の繰り返しとなる。 For example, D 2 is a white signal (m = 1) → S 2 (m = 2) → R 2
(M = 3) → a white signal (m = 1) is repeated every three fields.
最後に、多重化装置MPDの出力画像Dkをそれぞれ各液
晶型光変調板Ckに入力する。Finally, the output image Dk of the multiplexing device MPD is input to each liquid crystal type light modulation plate Ck .
これを第４図を参照し具体的に説明する。 This will be specifically described with reference to FIG.
第４図で最も左側の縦の列は、ｍ（主変調手段または
最後面主変調手段となる液晶型光変調板の番号）＝１の
場合である。この場合C1は主変調手段であるので、文字
Ｒに対応する画素は赤い光だけを透過しその後の画素で
は光を遮蔽する。C2とC3は無変調手段にあたるので、無
条件で光を透過する。したがって、C1〜C3を奥行き方向
に並置したとき、前面側からは赤色の文字Ｒが見える。The leftmost vertical column in FIG. 4 shows the case where m (the number of the liquid crystal light modulation plate serving as the main modulation means or the last surface main modulation means) = 1. In this case C 1 is the main modulation means, pixels corresponding to the character R shields light in subsequent pixels transmits only red light. Since C 2 and C 3 hits unmodulated means, transmits light unconditionally. Therefore, when C 1 to C 3 are juxtaposed in the depth direction, a red character R can be seen from the front side.
次に、中央の縦の列はｍ＝２の場合である。この場合
C1は副変調手段にあたるので、文字Ｒに対応する画素は
光を遮蔽しその他は光を透過する。またC2は主変調手段
にあたるので、文字Ｇに対応する画素は緑色の光だけを
透過しその他の画素では光を遮蔽する。C3は無変調手段
にあたるので光を透過する。したがって、C1〜C3を奥行
き方向に並置したとき、前面側からは緑色の文字Ｇの手
前に黒い文字Ｒが覆いかぶさったように見える。Next, the vertical column at the center is the case where m = 2. in this case
Since C 1 is equivalent to the sub-modulation unit, the pixels corresponding to the character R shields light others transmits light. Since C 2 hits the main modulation means, the pixels corresponding to the character G blocks light in transmitted other pixels only green light. C 3 transmits light so strikes the unmodulated means. Thus, when juxtaposed C 1 -C 3 in the depth direction appears to have overhanging black letter R in front of the green character G from the front side.
また、最も右側の縦の列はｍ＝３の場合である。この
場合C1は副変調手段にあたるので、文字Ｒに対応する画
素は光を遮蔽しその他は光を透過する。同様にC2も副変
調手段にあたるので、文字Ｇに対応する画素は光を遮蔽
しその他は光を透過する。またC3は最後面主変調手段に
あたるので、画像S3をそのまま表示する。したがって、
C1〜C3の奥行き方向に並置したとき、前面側からは青色
の文字Ｂの手前に黒い文字Ｒと文字Ｇが覆いかぶさった
ように見える。The rightmost vertical column shows the case where m = 3. In this case C 1 falls on auxiliary modulation means, the pixels corresponding to the character R shields light others transmits light. Since Similarly C 2 also corresponds to the sub-modulation unit, the pixels corresponding to the character G to block the light other transmits light. The C 3 since hits the end surface main modulating means, as it displays an image S 3. Therefore,
When juxtaposed in the depth direction of C 1 to C 3 , the black character R and the character G appear to cover over the blue character B from the front side.
次に、ｍの値を画像のフィールド単位で１から３まで
時分割で変化させると、目の残像による積分効果によっ
て３つの画像が重なって見え、実際に目に見える画像は
第４図のｍを時分割で変化させたときのようになる。Next, when the value of m is changed in a time-division manner from 1 to 3 for each field of the image, the three images appear to be superimposed due to the integration effect due to the afterimage of the eye, and the image actually seen is m in FIG. Is changed by time division.
ところで、以上の説明は、前面側の単一の視点位置か
ら見える画像についてである。ここで、視点位置がこの
表示装置に向かって左側にある場合は、各液晶型光変調
板と視点位置の幾何学的な位置関係により、第５図
（ａ）のように見える。同様に、視点位置が右側にある
ときは、第５図（ｂ）ように見える。この第５図（ａ）
（ｂ）を、両眼視するときの左右の目に見える画像と考
えれば、図より明らかに両眼視差が生じている。また、
第５図が、視点位置を移動させたときに起こる見えかた
の変化を示していると考えれば、明らかに運動視差が生
じている。このようにして、眼鏡なしで運動視差をとも
なった立体画像の表示ができる。The above description relates to an image viewed from a single viewpoint position on the front side. Here, when the viewpoint position is on the left side of the display device, it looks like FIG. 5 (a) due to the geometric positional relationship between each liquid crystal type light modulator and the viewpoint position. Similarly, when the viewpoint position is on the right side, it looks like FIG. 5 (b). This FIG. 5 (a)
Assuming that (b) is an image that can be seen by the left and right eyes when viewed with binocular vision, binocular parallax is apparent from the figure. Also,
Considering that FIG. 5 shows a change in appearance that occurs when the viewpoint position is moved, a motion parallax clearly occurs. In this way, a stereoscopic image with motion parallax can be displayed without glasses.
（発明の効果） 従来の方式である。ディスプレイ上にレンチキュラー
レンズや縦格子を張り付ける方法では、目に見える解像
度がディスプレイの解像度に比べて（1/視点数）にな
り、解像度が大きく低下する。また、ある視点位置で不
自然な見えかたになるため、観察位置が限定されるとい
う問題があった。(Effect of the Invention) This is a conventional method. In the method of attaching a lenticular lens or a vertical lattice on the display, the visible resolution becomes (1 / the number of viewpoints) compared to the resolution of the display, and the resolution is greatly reduced. In addition, there is a problem that an observation position is limited because an unnatural appearance is seen at a certain viewpoint position.
ところが本発明の装置では、視差に相当する複数の画
像を奥行き方向に多重化しているので、解像度の低下は
おこらない。また、従来の装置で問題となっていたある
視点位置において不自然な見えかたになるという現象
は、本発明の装置では原理的に生じない。However, in the apparatus of the present invention, since a plurality of images corresponding to parallax are multiplexed in the depth direction, the resolution does not decrease. In addition, the phenomenon of an unnatural appearance at a certain viewpoint position, which has been a problem in the conventional apparatus, does not occur in principle in the apparatus of the present invention.
このように本発明を用いることで、解像度が低下な
く、自然な運動視差をともなった、視点位置の制限が少
ない眼鏡なし立体画像が実現できる。By using the present invention in this manner, a stereoscopic image without glasses with reduced resolution and with less restriction on the viewpoint position can be realized with natural motion parallax.
第１図は本発明表示装置の基本構成を示す図、 第２図は実施例の構成を示す図、 第３図は、本発明の実施例において、画像信号と背景信
号の１例を示す図、 第４図は、本発明を用いたときに、いかにして立体画像
が表示されるかについて説明するための図、 第５図は、本発明の実施例において、表示される立体画
像を示す図、 第６図は、従来の立体視説明のための図、 第７図は、従来の画像配置例を示す図である。 Q1〜Qn……２次元光変調手段 S1〜Sn……画像信号、R1〜Rn-1……背景信号 Ls……光源 CD……２次元光変調手段用制御装置 C1〜C3……液晶型光変調板 D1〜D3……出力画像、MPD……多重化装置 COUT……３値カウンタ、DPS……ディスプレイ面 VMS……縦格子面、Ｐ……画像FIG. 1 is a diagram showing a basic configuration of a display device of the present invention, FIG. 2 is a diagram showing a configuration of an embodiment, and FIG. 3 is a diagram showing an example of an image signal and a background signal in the embodiment of the present invention. FIG. 4 is a diagram for explaining how a stereoscopic image is displayed when the present invention is used. FIG. 5 shows a stereoscopic image displayed in the embodiment of the present invention. FIG. 6 is a diagram for explaining conventional stereoscopic vision, and FIG. 7 is a diagram showing a conventional image arrangement example. Q 1 ~Q n ...... 2-dimensional light modulation means S 1 ~S n ...... image signals, R 1 ~R n-1 ...... background signal L s ...... source CD ...... 2-dimensional light modulation means control unit C 1 ~C 3 ...... liquid crystal light modulation panel D 1 ~D 3 ...... output image, MPD ...... multiplexer COUT ...... 3 value counter, DPS ...... display surface VMS ...... vertical lattice plane, P ...... image
Claims (1)
または透過を制御できる複数枚の２次元光変調手段と、
該奥行き方向に並置された複数枚の２次元光変調手段を
制御する２次元光変調手段用制御装置とを具えてなる立
体画像表示装置において、前記２次元光変調手段用制御
装置は、 前記奥行き方向に並置された複数枚の２次元変調手段の
うちの１枚の２次元光変調手段を主変調手段として選択
し、 主変調手段では画像を表示させ、 観察者を基準にして主変調手段より遠い位置にある２次
元光変調手段では光を透過させ、 観察者を基準にして主変調手段より近い位置にある２次
元光変調手段では別に生成した背景信号に基づいて光を
遮蔽させ、かつ すべての２次元光変調手段を時分割で主変調手段とする
ように 構成されていることを特徴とする立体画像表示装置。A plurality of two-dimensional light modulating means arranged in the depth direction and capable of controlling light shielding or transmission for each pixel;
A stereoscopic image display device comprising: a control device for a two-dimensional light modulating means for controlling a plurality of two-dimensional light modulating means juxtaposed in the depth direction; One of the two-dimensional light modulating means arranged in the direction is selected as one of the two-dimensional light modulating means as the main modulating means, and the main modulating means displays an image. The two-dimensional light modulating means at a distant position transmits light, and the two-dimensional light modulating means at a position closer to the observer than the main modulating means blocks light based on a separately generated background signal, and A three-dimensional image display device characterized in that the two-dimensional light modulation means is configured to be a main modulation means in a time-division manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018994A JP2843087B2 (en) | 1990-01-31 | 1990-01-31 | 3D image display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018994A JP2843087B2 (en) | 1990-01-31 | 1990-01-31 | 3D image display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03226095A JPH03226095A (en) | 1991-10-07 |
| JP2843087B2 true JP2843087B2 (en) | 1999-01-06 |
Family
ID=11987120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018994A Expired - Lifetime JP2843087B2 (en) | 1990-01-31 | 1990-01-31 | 3D image display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2843087B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE500028C2 (en) * | 1992-12-09 | 1994-03-21 | Celsiustech Electronics Ab | Device for presentation of a three-dimensional image |
| JP2003507774A (en) * | 1999-08-19 | 2003-02-25 | ディープ ヴィデオ イメイジング リミテッド | Multi-layer screen data display |
| AU769103B2 (en) * | 1999-08-19 | 2004-01-15 | Pure Depth Limited | Display method for multiple layered screens |
| JP3478192B2 (en) | 1999-08-20 | 2003-12-15 | 日本電気株式会社 | Screen superimposed display type information input / output device |
| US7619585B2 (en) | 2001-11-09 | 2009-11-17 | Puredepth Limited | Depth fused display |
| NZ525956A (en) | 2003-05-16 | 2005-10-28 | Deep Video Imaging Ltd | Display control system for use with multi-layer displays |
| NZ526028A (en) | 2003-05-21 | 2006-02-24 | Pure Depth Ltd | Backlighting system for display screen utilised to control the distribution of power to at least one light source |
| NZ542843A (en) * | 2005-10-05 | 2008-08-29 | Pure Depth Ltd | Method of manipulating visibility of images on a volumetric display |
| JP5004624B2 (en) * | 2007-03-20 | 2012-08-22 | 三洋電機株式会社 | Liquid crystal display |
-
1990
- 1990-01-31 JP JP2018994A patent/JP2843087B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03226095A (en) | 1991-10-07 |
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