JPS63211890A - Color display device - Google Patents
Color display deviceInfo
- Publication number
- JPS63211890A JPS63211890A JP62238331A JP23833187A JPS63211890A JP S63211890 A JPS63211890 A JP S63211890A JP 62238331 A JP62238331 A JP 62238331A JP 23833187 A JP23833187 A JP 23833187A JP S63211890 A JPS63211890 A JP S63211890A
- Authority
- JP
- Japan
- Prior art keywords
- light
- color
- prism
- cube prism
- right angle
- 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
- 239000010409 thin film Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 9
- 239000003086 colorant Substances 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 20
- 239000010408 film Substances 0.000 description 5
- 230000003595 spectral effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004826 Synthetic adhesive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、複数枚の像形成用のライトバルブを用いたカ
ラー表示装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a color display device using a plurality of light valves for forming images.
従来のカラー表示装置は、特開昭５８−１５０９３７に
開示されているように、反射型ライトバルブと、グイク
ロックミラーによって単色の画像を合成するものであっ
た。A conventional color display device, as disclosed in Japanese Unexamined Patent Publication No. 58-150937, synthesizes a monochromatic image using a reflective light valve and a quick clock mirror.
しかし、従来の技術では以下の問題点を有する第１に反
射型ライトバルブであり、ライトバルブ表面の反射がコ
ントラストの低下を招く。第２にライトバルブが陰極線
管（ＣＲＴ）の光によって制御されるため大がかりな装
置となる。第３にグイクロイックミラーは優れた偏光分
離性能を持たなくてはならなかった。However, the conventional technology has the following problems: First, it is a reflective light valve, and the reflection on the light valve surface causes a decrease in contrast. Second, since the light valve is controlled by light from a cathode ray tube (CRT), it is a large-scale device. Third, the guichroic mirror had to have excellent polarization separation performance.
そこで本発明はこのような問題点を解決するもので、そ
の目的とするところは、コントラストに優れ、光源光の
利用効率の高いコンパクトな投写型カラー表示装置を提
供するところにある。SUMMARY OF THE INVENTION The present invention is intended to solve these problems, and it is an object of the present invention to provide a compact projection type color display device with excellent contrast and high efficiency in the use of light source light.
本発明のカラー表示装置は、直角を狭む２辺の各々に色
光選択反射特性を有するＶＩ膜層が形成されてなる四個
の直角プリズムを有し、該直角ブリズムの各直角の頂点
から互いに一致接触してなり、該各々の直角プリズムの
該直角を狭む二辺のうちの一辺は、他の直角プリズムの
該直角を狭む二辺のうちの一辺と接触されてなるキュー
ブプリズムと、該キューブプリズムの四つの外側辺のう
ち三つの外側週番々に隣接して設けられら光透過型ライ
トバルブとを有してなることを特徴とする。The color display device of the present invention has four right-angle prisms each having a VI film layer having color light selective reflection characteristics formed on each of two sides narrowing the right angle, and mutually extending from each right-angle vertex of the right-angle prisms. a cube prism that is in coincident contact, and one side of the two sides narrowing the right angle of each right angle prism is in contact with one side of the two sides narrowing the right angle of another right angle prism; The cube prism is characterized by having light transmission type light valves provided adjacent to three outer sides of the four outer sides of the cube prism.
第１図は、本発明の実施例における投写型表示装置の原
理図を示したものである。FIG. 1 shows a principle diagram of a projection type display device according to an embodiment of the present invention.
光°源１から発散した光はコンデンサレンズ２によりコ
リメートされ、ライトバルブ３に光を照射し、投写レン
ズ４により拡大投写し、スクリーン５上に画像を結像す
る。Light diverging from a light source 1 is collimated by a condenser lens 2, illuminates a light valve 3, is enlarged and projected by a projection lens 4, and forms an image on a screen 5.
第２図は、本発明の光源についての詳細図であり、（ａ
）が照明系の構成図で、（ｂ）がリフレクタの分光特性
を示すグラフである。FIG. 2 is a detailed diagram of the light source of the present invention, (a
) is a configuration diagram of the illumination system, and (b) is a graph showing the spectral characteristics of the reflector.
ランプ１０は、ハロゲンランプもしくはメタルハライド
ランプ、キセノンランプ等の高演色性ランプで、楕円ミ
ラー１１は、点発光部１２を第１焦点Ｆ１に重なるよう
に合せ、第２焦点Ｆ２に集光させ、コンデンサレンズ１
３による光束１４はコリメートされる。楕円ミラー１１
は、コールドミラーで作られ、グラフ（ｂ）に示す如く
、赤外光線を透過させるために、照明系の前面には、熱
が伝わりにくく構成しである。The lamp 10 is a high color rendering lamp such as a halogen lamp, a metal halide lamp, or a xenon lamp, and the elliptical mirror 11 aligns the point light emitting part 12 so as to overlap the first focal point F1, focuses the light on the second focal point F2, and focuses the light onto the second focal point F2. lens 1
The light beam 14 due to 3 is collimated. Elliptical mirror 11
is made of a cold mirror, and as shown in graph (b), it is configured to transmit infrared rays so that heat is not easily transmitted to the front of the illumination system.
ＭＳ３図は、本発明の実施例における、キューブプリズ
ムの構成図で、（ａ）が、直角プリズムの斜視図、（ｂ
）がキューブプリズムの組立方法を表わした図である。MS3 diagrams are configuration diagrams of a cube prism in an embodiment of the present invention, (a) is a perspective view of a right angle prism, (b)
) is a diagram showing a method of assembling a cube prism.
直角プリズム２０は、直角を狭０２辺にそれぞれグイク
ロイックミラーの赤反射、青反射の層を、蒸着、もしく
はスパッタで作成し、４個のプリズムを（ｂ）のように
組み合せ、それぞれのプリズムの接着には、パルサム及
び合成接着剤の屈折率がｎ＝１．５２〜１．５４程度の
接着剤により、光学的接着を行ない、キューブプリズム
を組立てる。The right-angle prism 20 is made by vapor-depositing or sputtering red-reflecting and blue-reflecting layers of a guichroic mirror on the narrow right-angled sides, and combining four prisms as shown in (b). For adhesion, optical adhesion is performed using an adhesive such as PALSAM and a synthetic adhesive having a refractive index of about 1.52 to 1.54, and a cube prism is assembled.
第４図は、本発明の実施例におけるキューブプリズムの
色分離を示す図で、（ａ）に概念図と、（ｂ）に分光特
性を示す。FIG. 4 is a diagram showing color separation of a cube prism in an embodiment of the present invention, with (a) showing a conceptual diagram and (b) showing spectral characteristics.
キューブプリズム３０に白色光３１をプリズム面にほぼ
垂直に入射させると、それぞれの選択反射膜により、赤
、青、緑の３原色に色分離が行われる。分光特性は、（
ｂ）に示す如く、それぞれの色のフィルタ特性は、急峻
な特性が得られ、色光分離の特性は極めて良い。又、入
射面は、ＭｇＦ２ 、Ｚｒ ０２等の多層反射防止膜を
コーティングすることにより更に光の有効活用が可能と
なる第５図は、本発明による投写をカラー表示装置の全
体の構成図を表わしたもので、（ａ）は正面図で、（ｂ
）は平面図、（Ｃ）は側面図である。When white light 31 is incident on the cube prism 30 almost perpendicularly to the prism surface, color separation into three primary colors of red, blue, and green is performed by each selective reflection film. The spectral characteristics are (
As shown in b), the filter characteristics of each color have steep characteristics, and the color light separation characteristics are extremely good. Moreover, by coating the incident surface with a multilayer anti-reflection film such as MgF2, Zr02, etc., it is possible to make more effective use of light. FIG. 5 shows an overall configuration diagram of a projection color display device according to the present invention. (a) is a front view, (b)
) is a plan view, and (C) is a side view.
光源４０かも出射した白色光は、コンデンサレンズ４１
によりコリメートされ、第１のキューブプリズム４２に
入射し、赤、青、緑の３色に色分解される。分解された
色光はミラー４３により、方向を曲げられ、透過形ライ
トバルブ４４に入射する。ライトバルブ４４は、投写レ
ンズ４６により結像する位置に配置されている。The white light emitted from the light source 40 is passed through the condenser lens 41.
The light is collimated by the light beam, enters the first cube prism 42, and is separated into three colors: red, blue, and green. The direction of the separated color light is bent by a mirror 43 and enters a transmission type light valve 44 . The light valve 44 is arranged at a position where the projection lens 46 forms an image.
ライトバルブ４４は、３枚それぞれ、赤、青、緑、の画
像に対応した光の透過性を示し、加法混色により、それ
ぞれの表示画像がスクリーンで合成される様に、第２の
キューブプリズム４５で色光合成され、投写レンズ４６
によりスクリーンに投影される。The three light valves 44 each exhibit light transmittance corresponding to red, blue, and green images, and the second cube prism 45 is arranged so that the respective displayed images are synthesized on the screen by additive color mixing. The color light is synthesized by the projection lens 46.
is projected onto the screen.
ライトバルブ４４の駆動方式は、日経エルクトロニクス
ＮＯ３５１（１９８４）Ｐ２１１に記載したものに準じ
ている。The driving method of the light valve 44 is based on that described in Nikkei Elktronics No. 351 (1984) P211.
ＭＳ６図は、本発明による投写型カラー表示装置の他の
実施例の全体の構成図を示したもので（ａ）は正面図、
（ｂ）は平面図、（Ｃ）は側面図である。Figure MS6 shows an overall configuration diagram of another embodiment of the projection type color display device according to the present invention, in which (a) is a front view;
(b) is a plan view, and (C) is a side view.
光源５０から出射した白色光は、コンデンサレンズ５１
によりコリメートされ、第１のキューブプリズム５２に
入射し、赤、青、緑の３色に色分離される。分解された
色光はミラー５３により、方向を曲げられ、透過形ライ
トバルブ５４に入射する。ライトバルブは投写レンズ５
６により結像する位置に配置されている。The white light emitted from the light source 50 passes through the condenser lens 51
The light is collimated by the light beam, enters the first cube prism 52, and is separated into three colors: red, blue, and green. The direction of the separated color light is bent by a mirror 53 and enters a transmission type light valve 54. The light bulb is the projection lens 5
6 is placed at a position where an image is formed.
第２のキューブプリズム５５は、色合成プリズムでライ
トバルブの透過を合成する。The second cube prism 55 is a color synthesis prism that synthesizes the transmission of the light valve.
上述のように、キューブプリズムは、４個の直角プリズ
ムのグイクロイック膜を保護するように重ねて作成して
あり、入射面は、反射防止膜をコーティングしであるた
め、コリメートした光を効率良く色分離、色合成するこ
とができ、投写レンズに対しても、空気層より屈折率が
高いプリズムをライトバルブとの間に置くことにより、
実質のバックフォーカスを縮めることができる。As mentioned above, the cube prism is made by stacking the gicroic films of four right-angled prisms to protect them, and the incident surface is coated with an anti-reflection film, so the collimated light is efficiently colored. By placing a prism with a higher refractive index than the air layer between the projection lens and the light bulb, it is possible to separate and combine colors.
The actual back focus can be reduced.
上述の如く本発明は。 The present invention as described above.
直角を狭む２辺の各々に色光選択反射特性を有する薄膜
層が形成されてなる四個の直角プリズムを有し、該直角
プリズムの各直角の頂点が互いに一致接触してなり、該
各々の直角プリズムの該直角を狭む二辺のうちの一辺は
、他の直角プリズムの該直角を狭む二辺のうちの一辺と
接触されてなるキューブプリズムの四つの外側辺のうち
三つの外側週番々に隣接して設けられた光透過型ライト
バルブとを有してなるようにしたから、各ライトバルブ
を任意に開閉することによって自由な色の組み合せの色
合成、又は色分離を実現することができる。It has four rectangular prisms in which a thin film layer having color light selective reflection characteristics is formed on each of the two sides narrowing the right angle, and the apexes of each right angle of the rectangular prisms are in coincidence contact with each other, and each One side of the two sides narrowing the right angle of the right angle prism is in contact with one side of the two sides narrowing the right angle of another right angle prism. Since the light transmitting type light valves are provided adjacent to each other, it is possible to realize color synthesis or color separation of free color combinations by arbitrarily opening and closing each light valve. Can be done.
１１’ｓ１図は、本発明による投写型表示装置の原理図
を示す。
第２図は、本発明の光源についての詳細図で、（ａ）は
照明系の構成図を、（ｂ）はりフレフタの分光特性図を
示す。
第３図は、本発明のキューブプリズムの構成図で、（ａ
）は直角プリズムの斜視図を（ｂ）はキューブプリズム
の組立方法図を示す。
第４図は、本発明のキューブプリズムの色分離を示し、
（ａ）はキューブプリズムの色分離の概念図を（ｂ）は
キューブプリズムの色分離の分光特性図を示す。
第５図は、本発明の投写型カラー表示装置の全体の構成
図で（ａ）は正面図を（ｂ）は平面図を（Ｃ）は側面図
を示す。
ｗ４６図は、本発明の投写型カラー表示装置の他の実旅
例の構成図で、＜ａ）は正面図を（ｂ）は平面図を（ｃ
）は側面図を示す。
１・・・・・・光源
２０・・・・コンデンサレンズ
３・・・・・・ライトバルブ
４・・・・・・投写レンズ
５・・・・・・スクリーン
４２・・・・・・第１のキューブプリズム４３・・・・
・・ミラー
４５・・・・・・第２のキューブプリズム以上
出願人 セイコーエプソン株式会社
第２図ＣＩＤ）
第２図ＣＩＤ）
第３図（（Ｌ”）
第５図FIG. 11's1 shows a principle diagram of a projection type display device according to the present invention. FIG. 2 is a detailed diagram of the light source of the present invention, in which (a) shows a configuration diagram of the illumination system, and (b) shows a spectral characteristic diagram of the beam flapper. FIG. 3 is a block diagram of the cube prism of the present invention, (a
) shows a perspective view of a right-angle prism, and (b) shows a diagram of how to assemble a cube prism. FIG. 4 shows the color separation of the cube prism of the present invention,
(a) shows a conceptual diagram of color separation of a cube prism, and (b) shows a spectral characteristic diagram of color separation of a cube prism. FIG. 5 is an overall configuration diagram of the projection type color display device of the present invention, in which (a) shows a front view, (b) shows a plan view, and (C) shows a side view. Figure w46 is a configuration diagram of another actual example of the projection type color display device of the present invention, in which <a) is a front view, (b) is a plan view, and (c)
) shows a side view. 1... Light source 20... Condenser lens 3... Light bulb 4... Projection lens 5... Screen 42... First Cube prism 43...
...Mirror 45... Second cube prism or above Applicant Seiko Epson Co., Ltd. Figure 2 CID) Figure 2 CID) Figure 3 ((L”) Figure 5
Claims (1)
が形成されてなる四個の直角プリズムを有し、該直角プ
リズムの各直角の頂点が互いに一致接触してなり、該各
々の直角プリズムの該直角を狭む二辺のうちの一辺は、
他の直角プリズムの該直角を狭む二辺のうちの一辺と接
触されてなるキューブプリズムと、該キューブプリズム
の四つの外側辺のうち三つの外側辺各々に隣接して設け
られた光透過型ライトバルブとを有してなることを特徴
とするカラー表示装置。It has four rectangular prisms in which a thin film layer having color light selective reflection property is formed on each of the two sides narrowing the right angle, and the apexes of each right angle of the rectangular prisms are in coincident contact with each other, and each One of the two sides narrowing the right angle of the right angle prism is
A cube prism that is in contact with one side of the two sides narrowing the right angle of another right-angle prism, and a light-transmitting type provided adjacent to each of three of the four outside sides of the cube prism. A color display device comprising a light bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62238331A JPS63211890A (en) | 1987-09-22 | 1987-09-22 | Color display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62238331A JPS63211890A (en) | 1987-09-22 | 1987-09-22 | Color display device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60141388A Division JPH0634508B2 (en) | 1985-06-27 | 1985-06-27 | Projection color display |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7064507A Division JP2737688B2 (en) | 1995-03-23 | 1995-03-23 | Color display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63211890A true JPS63211890A (en) | 1988-09-02 |
| JPH0465594B2 JPH0465594B2 (en) | 1992-10-20 |
Family
ID=17028620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62238331A Granted JPS63211890A (en) | 1987-09-22 | 1987-09-22 | Color display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63211890A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575488A (en) * | 1980-06-12 | 1982-01-12 | Matsushita Electric Ind Co Ltd | Television picture projector |
| JPS5814818A (en) * | 1981-07-20 | 1983-01-27 | Nec Corp | 2 color schilieren projection device |
| JPS5897983A (en) * | 1981-12-07 | 1983-06-10 | Sony Corp | Projection type display |
| JPS58150937A (en) * | 1981-12-28 | 1983-09-07 | ヒューズ・エアクラフト・カンパニー | Image projector |
-
1987
- 1987-09-22 JP JP62238331A patent/JPS63211890A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS575488A (en) * | 1980-06-12 | 1982-01-12 | Matsushita Electric Ind Co Ltd | Television picture projector |
| JPS5814818A (en) * | 1981-07-20 | 1983-01-27 | Nec Corp | 2 color schilieren projection device |
| JPS5897983A (en) * | 1981-12-07 | 1983-06-10 | Sony Corp | Projection type display |
| JPS58150937A (en) * | 1981-12-28 | 1983-09-07 | ヒューズ・エアクラフト・カンパニー | Image projector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0465594B2 (en) | 1992-10-20 |
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