JPH0396913A - Image display device - Google Patents
Image display deviceInfo
- Publication number
- JPH0396913A JPH0396913A JP1233917A JP23391789A JPH0396913A JP H0396913 A JPH0396913 A JP H0396913A JP 1233917 A JP1233917 A JP 1233917A JP 23391789 A JP23391789 A JP 23391789A JP H0396913 A JPH0396913 A JP H0396913A
- Authority
- JP
- Japan
- Prior art keywords
- light beam
- wavefront curvature
- luminous flux
- display device
- image display
- 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.)
- Granted
Links
- 210000001747 pupil Anatomy 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 239000013307 optical fiber Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 9
- 239000003086 colorant Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 210000001508 eye Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Processing Or Creating Images (AREA)
- Digital Computer Display Output (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野1
本発明は、広視野でかつ、自然な立体的視覚をも与え得
る画像表示装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to an image display device that has a wide field of view and can also provide natural stereoscopic vision.
[従来技術]
従米、高品質画像表示装置としては、通常、高精細CR
Tを利用し、コンピュータグラフィックス、CAD,各
種シミュレーション結果の表示に使用されている。画像
データ処理技術の進展により、表示画質は極めて良質で
あり、例えば、自動4【デザイン、都市景観チェック等
において実物が存在せずとも、設計データ等にもとづい
てコンピュータによって画像データを生威し、リアリス
ティックな表示が可能となっている。また、両眼視差を
与えることで立体表示を可能とする手段も各種提案され
ている。例えば、CRT上に左匝用、右服用の画像を交
互に表示し、それと同期して観察者の眼前の液晶シャノ
タを開閉し、両服視差を与えることができる。[Prior art] High-definition CR is usually used as a high-quality image display device.
It is used for computer graphics, CAD, and display of various simulation results. Thanks to advances in image data processing technology, the quality of displayed images has become extremely high. Realistic display is possible. Furthermore, various means have been proposed to enable stereoscopic display by providing binocular parallax. For example, it is possible to alternately display images for the left and right bags on a CRT, and open and close a liquid crystal screen in front of the observer's eyes in synchronization with the images to provide parallax for both clothes.
[発明が解決しようとする課題]
しかしながら、前述の技術では、多くの表示対象物にお
いて、実寸表示ができないという欠点がある。家具、自
動車等のデザイン、都市景観チェックなどにおいては、
表示の色,質感にあわせて表示寸法も本質的に重要とな
る。通常CRTの寸法は数10c+nであり、前記対象
物の実寸表示は不可能である。投影スクリーン等を用い
れば数τ0以内の対象物の実寸表示は可能となるが、装
置は大型牝し、極めて高価なものとなる。[Problems to be Solved by the Invention] However, the above-mentioned technique has a drawback in that it is not possible to display the actual size of many display objects. In designing furniture, automobiles, etc., checking urban landscapes, etc.,
Along with the color and texture of the display, display dimensions are also essentially important. Normally, the dimensions of a CRT are several 10c+n, making it impossible to display the actual size of the object. If a projection screen or the like is used, it is possible to display the actual size of the object within several τ0, but the device is large and extremely expensive.
一方、3次元立体表示に関しても問題がある。On the other hand, there are also problems with three-dimensional stereoscopic display.
両眼視差で決まるN象位置とビント調節で決まる対象位
置(= C R T管面)とが異なるため不自然感があ
り、また観察者の疲労も大きい。加えて自然な立体視差
に必要な広視野の点でも不十分であり、3次元立体表示
装置としての性能に限界があった。Since the N-elephant position determined by binocular parallax is different from the target position (= C R T tube surface) determined by binocular adjustment, there is an unnatural feeling, and the viewer is also greatly fatigued. In addition, the wide field of view required for natural stereoscopic parallax was insufficient, and there was a limit to the performance as a three-dimensional stereoscopic display device.
本発明は、上述した問題点を解決するためになされたも
のであり、表示対象物が実在した場合に観察者の瞳孔に
入射するのと同一の光束を合威し、観察者の眼球に照射
することで視覚を与えることを特徴とし、その目的とす
るところは、広視野でかつ自然な立体感を与える小型な
画像表示装置を提供することにある。The present invention was made in order to solve the above-mentioned problems, and it combines the same light flux that would enter the viewer's pupil if the display object actually existed, and irradiates the viewer's eyeballs. The purpose is to provide a compact image display device that provides a wide field of view and a natural three-dimensional effect.
F課題を解決するための手段コ
この目的を達戒するために本発明の画像表示装置は、強
度変調が可能な、ひとつ以上の光源と、該光源出力を威
形して得られた略平行な光束の波面曲率を変化する波面
曲率変調手段と、光束の伝3
播方向を変更する光束偏向手段と、前記構戒要素開を光
束が伝播することを可能とする光路要素と、所望の光ビ
ーム形状を得るためのひとつ以上のレンズとを兵備し、
入射角度、波面曲率、強度の各々が変調された略平行な
光束を、観察者の瞳孔に入射可能としている。Means for Solving Problem F To achieve this objective, the image display device of the present invention includes one or more light sources capable of intensity modulation, and a substantially parallel light source obtained by controlling the output of the light source. a wavefront curvature modulation means for changing the wavefront curvature of the light beam; a light beam deflection means for changing the propagation direction of the light beam; an optical path element that allows the light beam to propagate through the optical beam; equipped with one or more lenses for obtaining a beam shape,
A substantially parallel light beam whose incident angle, wavefront curvature, and intensity are each modulated is allowed to enter the viewer's pupil.
1作用]
上記の情威をイjする本発明の両像表示装置は、強度変
調された光源からの出力光を略平行な光束に戒形し、波
面曲率変調手段によって、前記光束の波面曲率を所望の
値に設定し、観察者の瞳孔に入射する。この時、観察者
は、光束入射方向延長線上で、波面曲率半径に等しい距
離に輝点があるかのような視覚を得る。光束偏向手段に
よって前記光束の瞳孔への入射角度を掃引すると同時に
光強度,波面曲率を変調すれば任意の自然な立体視覚を
観察者に与えることができる。1 Effect] The double-image display device of the present invention, which achieves the above-mentioned features, transforms intensity-modulated output light from a light source into a substantially parallel light beam, and modulates the wavefront curvature of the light beam by a wavefront curvature modulation means. is set to a desired value, and the beam enters the observer's pupil. At this time, the observer perceives as if there is a bright spot at a distance equal to the radius of wavefront curvature on the extension line of the direction of incidence of the light beam. By sweeping the angle of incidence of the light beam onto the pupil using the light beam deflection means and simultaneously modulating the light intensity and wavefront curvature, any natural stereoscopic vision can be provided to the viewer.
[実施例]
以下、本発明を共体化した一実施例を図面を参照して説
明する。[Example] Hereinafter, an example in which the present invention is integrated will be described with reference to the drawings.
一4
第1図は本実施例の画像表示装置の全体構成図、第2図
波面曲率変調手段の構戊図、第3図は光束偏向手段の構
戊図である。図面に従って構成および作用を説明する。14. FIG. 1 is an overall configuration diagram of the image display device of this embodiment, FIG. 2 is a configuration diagram of the wavefront curvature modulation means, and FIG. 3 is a configuration diagram of the light beam deflection means. The configuration and operation will be explained according to the drawings.
データ処理および制御部10では、仮想空間における3
次元表示対象物の位置形状情報と照明条件、視点位置情
報から表示画像データを計算し、R光源11、G光源1
2、B光源に対する強度変調信号および波面曲率変調手
段への制御信号、光束偏向手段への同期信号等を発生す
る。該各種計算のアルゴリズムはコンピュータグラフィ
ックス分野で常用されているものであり、ここでは説明
を省略する。R,G,B各光源11,12,1.3から
の出射光は、コリメートレンズ14a〜14cによって
略平行光束に戒形された後、波長選択性ミラー15,1
6.17によって合波され、7ォーカスレンズ14dに
よって光ファイバ18に入射される。該光7アイバ18
の他端よりの出射光は、コリメートレンズ14eによっ
て略平行な光束に変換され、波面曲率変調手段1つに入
射される。該波面曲甲変調手段19では、前記データ処
理および制御部10からの制御信号に従って、前記入射
光束の波面曲率(H平行度)に変調を加える。前記波面
曲率変調手段19は、保持兵50に取り付けられた圧電
板51、電極52a,52b(反射膜53と積N)から
なる。電極52a,bに制御信号電圧を印加すると適当
に分極された圧電板51は凸面状に変形する。その結呆
、反射膜53における反射の前後で光束の波面曲率が変
化する。In the data processing and control unit 10, three
Display image data is calculated from the position and shape information of the dimensional display target, illumination conditions, and viewpoint position information, and R light source 11 and G light source 1
2. Generates an intensity modulation signal for the B light source, a control signal for the wavefront curvature modulation means, a synchronization signal for the beam deflection means, etc. The algorithms for the various calculations are commonly used in the computer graphics field, and will not be described here. The light emitted from each of the R, G, and B light sources 11, 12, and 1.3 is shaped into a substantially parallel light beam by collimating lenses 14a to 14c, and then to wavelength selective mirrors 15, 1.
6.17, and enters the optical fiber 18 through the 7 focus lens 14d. The light 7 Aiba 18
The light emitted from the other end is converted into a substantially parallel light beam by the collimating lens 14e, and is incident on one wavefront curvature modulation means. The wavefront curvature modulation means 19 modulates the wavefront curvature (H parallelism) of the incident light beam in accordance with the control signal from the data processing and control section 10. The wavefront curvature modulating means 19 includes a piezoelectric plate 51 attached to the retainer 50 and electrodes 52a and 52b (multiplied by the reflective film 53 and N). When a control signal voltage is applied to the electrodes 52a and 52b, the appropriately polarized piezoelectric plate 51 is deformed into a convex shape. As a result, the wavefront curvature of the light beam changes before and after reflection at the reflective film 53.
前記波面曲率変調手段からの出射光束は光束偏向手段2
0へ入射される。光束偏向手段20においては、3mの
レンズ101a−cとーボリゴンミラ−102によって
観察者の瞳孔へ入射角を変化させつつ光束を照射する。The light beam emitted from the wavefront curvature modulation means is transmitted to the light beam deflection means 2.
0. In the light beam deflecting means 20, a light beam is irradiated onto the viewer's pupil by changing the angle of incidence using lenses 101a to 101c of 3 m and a polygonal mirror 102.
光束偏向手段は、もう一組設置し(図示省略)2次元的
に掃引する。Another set of light beam deflecting means (not shown) is installed to sweep the light beam two-dimensionally.
以上の光学系を2系列設兵備し、観察者の両眼に光束を
供給する。Two lines of the above optical system are installed to supply light beams to both eyes of the observer.
なお、上記実施例の各構1&要素については、各種の変
形が可能である。光源を1次元あるいは2次元配列状に
すれば、それに対応して光束偏向手段は1次元化あるい
は省略が可能である。波面曲率変調手段としては、低速
が許容されれば可動レンズを使用できる。また、より高
速化が必要な場合は、屈折率分布型の導波路を電気光学
効果のある材料で形威し、その屈折率分布形状を電ス的
手段で変調するという形式も採用できる。一方、光束偏
向手段としては、音響光学効果偏向器の利用も可能であ
る。Note that various modifications can be made to each structure 1 & element of the above embodiment. If the light sources are arranged in a one-dimensional or two-dimensional array, the light beam deflecting means can be made one-dimensional or omitted. As the wavefront curvature modulation means, a movable lens can be used if low speed is allowed. Furthermore, if higher speed is required, it is also possible to adopt a method in which a refractive index distribution type waveguide is made of a material with an electro-optic effect, and the shape of the refractive index distribution is modulated by electrical means. On the other hand, as the light beam deflecting means, an acousto-optic effect deflector can also be used.
[発明の効果1
以上詳述したことから明らかなように、本発明によれば
、強度変調可能な光源から観察者までの光路中に、波面
曲率変調手段19と光束偏向手段20とを設けた構戒と
なっているために、表示物体が実在した場合と同一強度
、入射方向、波面曲率をもった光束を観察者の瞳孔に照
射することができ、従って、広視野で極めて自然な位体
的視覚を観察者に与えることができる。[Effects of the Invention 1] As is clear from the detailed description above, according to the present invention, the wavefront curvature modulation means 19 and the light beam deflection means 20 are provided in the optical path from the intensity modulated light source to the observer. Because of this, the viewer's pupil can be irradiated with a beam of light that has the same intensity, incident direction, and wavefront curvature as if the displayed object were actually there. It can give the observer a visual impression.
第1図から第3図までは本発明を具体化した実施例を示
すもので、第1図は装置全体構成図であ−7−
り、第2図は波面曲率変調手段の構威図であり、第3図
は光束偏向手段の構戒図である。
10・・・データ処理および制御部、11・・・R光源
、12・・・G光源、13・・・B光源、14・・・レ
ンズ、15〜17・・・波長選択性ミラー 18・・・
光ファイバ、19・・・波面曲率変調手段、20・・・
光束偏向手段。
−8ーFigures 1 to 3 show embodiments embodying the present invention; Figure 1 is a diagram of the overall configuration of the device, and Figure 2 is a diagram of the configuration of the wavefront curvature modulation means. 3 is a composition diagram of the light beam deflecting means. DESCRIPTION OF SYMBOLS 10... Data processing and control part, 11... R light source, 12... G light source, 13... B light source, 14... Lens, 15-17... Wavelength selective mirror 18...・
Optical fiber, 19... Wavefront curvature modulation means, 20...
Light beam deflection means. -8-
Claims (1)
力を成形して得られた略平行な光束の波面曲率を変調す
る波面曲率変調手段と、 光束の伝播方向を変更する光束偏向手段と、前記構成要
素間を光束が伝播することを可能とする光路要素と、 所望の光ビーム形状を得るためのひとつ以上のレンズと を具備し、 入射角度、波面曲率、強度の各々が変調された略平行な
光束を、観察者の瞳孔に入射可能としたことを特徴とす
る画像表示装置。 2、光束偏向手段は2次元的に偏向可能であることを特
徴とする第1項記載の画像表示装置。 3、光源が一次元配列状であり、光束偏向手段は前記光
源配列方向に略直交して、1次元に偏向可能なことを特
徴とする第1項記載の画像表示装置。 4、光源は2次元配列状であり、光束偏向手段を省略し
たことを特徴とする第1項記載の画像表示装置。 5、波面曲率変調手段と光束偏向手段とを一体とし、光
源との間を光ファイバによって接続したことを特徴とす
る第1項または第2項記載の画像表示装置。 6、波面曲率変調手段は、圧電材料を利用した可変焦点
ミラーであることを特徴とした第1項乃至第5項のいず
れかに記載の画像表示装置。[Claims] 1. One or more light sources capable of intensity modulation, wavefront curvature modulation means for modulating the wavefront curvature of a substantially parallel light beam obtained by shaping the output of the light source, and the propagation direction of the light beam. an optical path element that allows the light beam to propagate between the components; and one or more lenses for obtaining a desired light beam shape, the angle of incidence, the wavefront curvature, An image display device characterized in that substantially parallel light beams whose respective intensities are modulated can enter the pupil of an observer. 2. The image display device according to item 1, wherein the light beam deflecting means is two-dimensionally deflectable. 3. The image display device according to item 1, wherein the light sources are arranged in a one-dimensional array, and the light beam deflecting means is capable of deflecting the light beam in one dimension substantially perpendicular to the direction in which the light sources are arranged. 4. The image display device according to item 1, wherein the light sources are arranged in a two-dimensional array, and the light beam deflecting means is omitted. 5. The image display device according to item 1 or 2, characterized in that the wavefront curvature modulation means and the light beam deflection means are integrated and connected to the light source by an optical fiber. 6. The image display device according to any one of items 1 to 5, wherein the wavefront curvature modulation means is a variable focus mirror using a piezoelectric material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1233917A JP2874208B2 (en) | 1989-09-08 | 1989-09-08 | Image display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1233917A JP2874208B2 (en) | 1989-09-08 | 1989-09-08 | Image display device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0396913A true JPH0396913A (en) | 1991-04-22 |
JP2874208B2 JP2874208B2 (en) | 1999-03-24 |
Family
ID=16962623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1233917A Expired - Lifetime JP2874208B2 (en) | 1989-09-08 | 1989-09-08 | Image display device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2874208B2 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08169100A (en) * | 1994-08-24 | 1996-07-02 | Schablonentechnik Kufstein Ag | Device for forming stencil for printing |
JPH1197779A (en) * | 1997-09-22 | 1999-04-09 | Sony Corp | Modulation amplifier for multiple color light and projection display using the same |
JPH11505627A (en) * | 1995-05-09 | 1999-05-21 | ユニバーシティ オブ ワシントン | Virtual retinal display with fiber optic point light source |
WO2004049037A1 (en) * | 2002-11-27 | 2004-06-10 | Brother Kogyo Kabushiki Kaisha | Image display |
JP2004347687A (en) * | 2003-05-20 | 2004-12-09 | Canon Inc | Scanning type picture display device, and optical system for scanning type picture display device |
WO2005043218A1 (en) * | 2003-10-30 | 2005-05-12 | Brother Kogyo Kabushiki Kaisha | Image display device |
JP2005157329A (en) * | 2003-10-30 | 2005-06-16 | Brother Ind Ltd | Image display device |
WO2005096073A1 (en) * | 2004-04-02 | 2005-10-13 | Kazunari Era | Projection display and projection display system |
JP2007086145A (en) * | 2005-09-20 | 2007-04-05 | Sony Corp | Three-dimensional display |
JP2007178943A (en) * | 2005-12-28 | 2007-07-12 | Brother Ind Ltd | Image display device |
JP2008509438A (en) * | 2004-08-06 | 2008-03-27 | ユニヴァーシティ オブ ワシントン | Optical display device scanned with variable fixed viewing distance |
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JP4513225B2 (en) | 2001-03-30 | 2010-07-28 | ブラザー工業株式会社 | Optical scanning device and image forming apparatus provided with optical scanning device |
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US7497574B2 (en) | 2002-02-20 | 2009-03-03 | Brother Kogyo Kabushiki Kaisha | Retinal image display device |
US6967781B2 (en) | 2002-11-29 | 2005-11-22 | Brother Kogyo Kabushiki Kaisha | Image display apparatus for displaying image in variable direction relative to viewer |
JP2005084569A (en) * | 2003-09-11 | 2005-03-31 | Brother Ind Ltd | Picture display device |
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-
1989
- 1989-09-08 JP JP1233917A patent/JP2874208B2/en not_active Expired - Lifetime
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08169100A (en) * | 1994-08-24 | 1996-07-02 | Schablonentechnik Kufstein Ag | Device for forming stencil for printing |
JPH11505627A (en) * | 1995-05-09 | 1999-05-21 | ユニバーシティ オブ ワシントン | Virtual retinal display with fiber optic point light source |
JPH1197779A (en) * | 1997-09-22 | 1999-04-09 | Sony Corp | Modulation amplifier for multiple color light and projection display using the same |
WO2004049037A1 (en) * | 2002-11-27 | 2004-06-10 | Brother Kogyo Kabushiki Kaisha | Image display |
JP2004347687A (en) * | 2003-05-20 | 2004-12-09 | Canon Inc | Scanning type picture display device, and optical system for scanning type picture display device |
WO2005043218A1 (en) * | 2003-10-30 | 2005-05-12 | Brother Kogyo Kabushiki Kaisha | Image display device |
JP2005157329A (en) * | 2003-10-30 | 2005-06-16 | Brother Ind Ltd | Image display device |
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