JPS63118717A - Projection type color display device - Google Patents
Projection type color display deviceInfo
- Publication number
- JPS63118717A JPS63118717A JP61265214A JP26521486A JPS63118717A JP S63118717 A JPS63118717 A JP S63118717A JP 61265214 A JP61265214 A JP 61265214A JP 26521486 A JP26521486 A JP 26521486A JP S63118717 A JPS63118717 A JP S63118717A
- Authority
- JP
- Japan
- Prior art keywords
- light
- beams
- blue
- image
- mirror
- 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
Links
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000003086 colorant Substances 0.000 abstract description 2
- 229910052736 halogen Inorganic materials 0.000 abstract description 2
- 150000002367 halogens Chemical class 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 16
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
- H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
Landscapes
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、画像形成のだめの液晶ライトバルブを複数枚
用い、投写して画像表示を行なう授与型力２−表示装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an imparting type force 2-display device that uses a plurality of liquid crystal light valves for image formation and displays an image by projecting it.
従来、複数枚の液晶ライトバルブを用いた投写型カラー
表示装置は、Ｓより′８６ダイジエストＰ３７５〜Ｐ３
７８に記載されるように、白色光を十字状に組み合わせ
たグイクロイックミラー系で、三原色の赤、緑、青の色
光に分離し、その色光を液晶ライトバルブにて画像変調
し、各色光なダイクロイックプリズムで合成し、投写レ
ンズで投写するものかありた。Conventionally, projection-type color display devices using multiple liquid crystal light valves were developed by '86 Digest P375 to P3 from S.
As described in 78, a gicchroic mirror system that combines white light in a cross shape separates it into the three primary colors of red, green, and blue, and then image-modulates the color light with a liquid crystal light valve to generate each color light. There was one that combined the images using a dichroic prism and projected them using a projection lens.
しかし、前述の従来技術では、完全な平行光線の投写光
源の実現が困難で、光源からの距離が大きくなるにつれ
減衰が大きくなる。前例では緑色光に比べ赤色光、青色
光の光源から液晶ライトバルブまでの距離が大きいため
、加えて反射ミラーにより、赤色光及び青色光の減衰が
大きく、緑色光をＮＤフィルター等により減衰させ、色
バランスをとらなくてはならず、結果的に暗い画像表示
となる。However, in the above-mentioned conventional technology, it is difficult to realize a perfectly parallel light projection light source, and the attenuation increases as the distance from the light source increases. In the previous example, the distance from the light source of red light and blue light to the liquid crystal light valve was larger than that of green light, so in addition, the red light and blue light were attenuated greatly by the reflecting mirror, and the green light was attenuated by an ND filter, etc. Color balance must be maintained, resulting in a dark image display.
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、白色光源光な色光に分離する
ダイクロイックミラーは、各々の色光な同一方向に出射
分離するように直列的に配置し、それぞれの色光は集光
レンズにより集光し、ライトパルプ面を照射し、変調さ
れた色光をキエーププリズムで画像合成し投写すること
により明るい画像を提供することを目的とする。Therefore, the present invention aims to solve these problems.
The purpose of this is that dichroic mirrors that separate white light source light into colored light are arranged in series so that each colored light is emitted and separated in the same direction, each colored light is focused by a condensing lens, and the The purpose is to provide a bright image by illuminating the pulp surface, synthesizing the modulated colored light using a Kiep prism, and projecting the image.
本発明の投写型カラー表示装置は、画像形成のためのラ
イトパルプと、色光を分離２合成するダイクロイックミ
ラーと、投写光学系と照射系からなる投写型カラー表示
装置において、白色光源光を色光に分離するダイクロイ
ックミラーは、各々の色光な同一方向に出射分離するよ
うに直列的に配置し、それぞれの色光は集光レンズによ
り集光し、ライトパルプ面を照射し、変調された色光を
キエーブプリズムで画像合成し投写したことを特徴とす
る。The projection type color display device of the present invention includes a light pulp for image formation, a dichroic mirror that separates and combines two colored lights, a projection optical system, and an irradiation system, in which white light source light is converted into colored light. The separating dichroic mirrors are arranged in series so that each color light is emitted and separated in the same direction, each color light is focused by a condensing lens, irradiated on the light pulp surface, and the modulated color light is chieved. It is characterized by combining and projecting images using a prism.
以下、本発明の一実施例を図面に沿って説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本発明の投写型カラー表示−置の平面図であ
る。ハロゲンランプ等の投写光源１から出射された白色
光は、入射光に対し、４５度に傾斜した色分離用のダイ
クロイックミラーに入射し、青色外！ ミラー２．緑色
外ｍミラー３．赤色分離ミラー４によりそれぞれの色光
に分離される。FIG. 1 is a plan view of a projection type color display device of the present invention. White light emitted from a projection light source 1, such as a halogen lamp, enters a dichroic mirror for color separation that is tilted at an angle of 45 degrees with respect to the incident light, and the color is not blue! Mirror 2. Green outside m mirror 3. The red color separation mirror 4 separates the light into respective color lights.
青色分離ミラー２は、青色光（おおむね５００１ｍ以下
の波長の光）を反射し、その他の光を透過する。反射し
た青色光は、青色集光レンズ５により、青色ライトパル
プ６の有効画面エリアに集光照射される。The blue separation mirror 2 reflects blue light (light with a wavelength of approximately 5001 m or less) and transmits other light. The reflected blue light is condensed and irradiated onto the effective screen area of the blue light pulp 6 by the blue condensing lens 5.
青色分離ミラー２を透過した光は、緑色分離ミラー３に
入射し、緑色光（おおむね５００ ｒ＆ｍ〜６００ ｎ
ｒｎの間の光）を反射し、その他の光である赤色光（お
おむね（５Ｑ Ｑ ｎｕ以上の波長の光）を透過する０
反射した緑色光は、緑色集光レンズ７により、緑色ライ
トパルプ８の有効画面に集光照射する。The light transmitted through the blue separation mirror 2 enters the green separation mirror 3, where it is converted into green light (approximately 500 r&m to 600 n
0 which reflects red light (light between rn and
The reflected green light is condensed and irradiated onto the effective screen of the green light pulp 8 by the green condensing lens 7.
緑色分離ミラー３を透過した赤色光は、赤色分離ミラー
４（反射ミラーでも良い、）で反射され赤色集光レンズ
９により赤色ライトパルプ１０の有効画面に集光照射す
る。The red light transmitted through the green separation mirror 3 is reflected by the red separation mirror 4 (which may also be a reflective mirror), and is condensed and irradiated onto the effective screen of the red light pulp 10 by the red condenser lens 9.
ミラー１１は、赤色光と、青色光をライトバルブに照射
する光を９０度折り曲げる。The mirror 11 bends the red light and the blue light irradiating the light valve by 90 degrees.
赤、緑、青のライトバルブは、各色に対応した画像の電
気信号により、光の透過墓をコントロールするライトバ
ルブで、各色光はキエーププリズム１２で画像合成され
る。このキエーププリズム１２は、直角プリズムの直角
を挾む面にダイクロイック層を蒸着により膜形成したも
のを４個はり合せたものである。つまり、Ｘ状に、赤色
光の合成が可能となり、投写レンズ１３により、スクリ
ーン１４に画像を拡大投写する。The red, green, and blue light valves are light valves that control the transmission of light by electric signals of images corresponding to each color, and the light of each color is synthesized into an image by the Kiep prism 12. This Kiepp prism 12 is made by gluing together four dichroic layers formed by vapor deposition on the faces of right angle prisms. In other words, red light can be combined in an X-shape, and an image is enlarged and projected onto the screen 14 by the projection lens 13.
第２図は、本発明の他の実施例を示す平面図である。FIG. 2 is a plan view showing another embodiment of the invention.
第１図の投写型カラー表示装置と同様な構成であるが、
集光レンズがそれぞれ２枚構成のコンデンサレンズで構
成され、青色光集光レンズ３０゜緑色光集光レンズ３１
．赤色光集光レンズ３２でライトバルブに光を集光する
。It has the same configuration as the projection type color display device shown in Fig. 1, but
Each condenser lens is composed of two condenser lenses, including a blue light condenser lens 30° and a green light condenser lens 31.
．． A red light condensing lens 32 condenses the light onto the light valve.
前述の実施例同様に、投写光源１から出射した白色光は
、入射光に対し、４５度に傾斜した色分離用のダイクロ
イックミラーに入射し、青色分離ミラー２．緑色分離ミ
ラー３．赤色分離ミラー４によりそれぞれの色光に分離
される。Similar to the embodiment described above, the white light emitted from the projection light source 1 enters the color separation dichroic mirror tilted at 45 degrees with respect to the incident light, and then passes through the blue separation mirror 2. Green separation mirror 3. The red color separation mirror 4 separates the light into respective color lights.
青色分離ミラー２は、青色光を反射し、その他の光を透
過する。反射した青色光は、青色光集光レンズ３０で、
青色ライトパルプ乙の有効画面エリアに集光され照射す
る。同様に、緑色、赤色の色光をライトバルブに集光照
射し、電気信号により、色光の透過世をコントロールす
るそれぞれのライトバルブの画像をキエーブプリズム１
２により′合成する。The blue separation mirror 2 reflects blue light and transmits other light. The reflected blue light is collected by a blue light condensing lens 30.
The blue light is focused on the effective screen area of Pulp B and irradiates it. Similarly, green and red color light is condensed and irradiated onto the light valve, and the image of each light valve, which controls the transmission of the color light using electrical signals, is displayed on the Chieve prism 1.
Synthesize by 2.
以上述べたように、本発明によれば、直列的に配列した
ダイクロイックミラーにより白色光を色分離することに
より効率の高い色分離が可能であり、更に、集光レンズ
を、各色分離後に設けることにより、光路の長さの違い
による各色光のバラツキを押さえることも可能であり、
表示画像を明るくすることができる。As described above, according to the present invention, highly efficient color separation is possible by color-separating white light using dichroic mirrors arranged in series, and furthermore, a condenser lens is provided after each color separation. This makes it possible to suppress variations in light of each color due to differences in optical path length.
Display images can be brightened.
第１図は、本発明の投写型カラー表示装置の一実施例を
示す平面図である。
第２図は、本発明の他の実施例を示す平面図である。
１・・・・・・・・・投写光源
２・・・・・・・・・青色分離ミラー
５・・・・・・・・・緑色分ａミラー
４・・・・・・・・・赤色分離ミラー
５・・・・・・・・・青色集・光レンズ６・・・・・・
・・・青色ライトパルプ１２・・・・・・キューブプリ
ズム
１３・・・・・・投写レンズ
１４・・・・・・スクリーン
以 上FIG. 1 is a plan view showing an embodiment of a projection type color display device of the present invention. FIG. 2 is a plan view showing another embodiment of the invention. 1...Projection light source 2...Blue separation mirror 5...Green color a mirror 4...Red Separation mirror 5... Blue collection/light lens 6...
... Blue light pulp 12 ... Cube prism 13 ... Projection lens 14 ... Screen and above
Claims (1)
成するダイクロイックミラーと、投写光学系と、照明系
からなる投写型カラー表示装置において、白色光源光を
色光に分離するダイクロイックミラーは、各々の色光を
同一方向に出射分離するように直列的に配置し、それぞ
れの色光は、集光レンズにより集光し、ライトバルブ面
を照射し、変調された色光をキューブプリズムで画像合
成し投写したことを特徴とする投写型カラー表示装置。1) In a projection color display device consisting of a light valve for image formation, a dichroic mirror that separates and combines colored light, a projection optical system, and an illumination system, each dichroic mirror that separates white light source light into colored light The colored lights were arranged in series so that they were emitted and separated in the same direction, and each colored light was focused by a condensing lens, irradiated the light valve surface, and the modulated colored light was synthesized and projected as an image by a cube prism. A projection type color display device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61265214A JPS63118717A (en) | 1986-11-07 | 1986-11-07 | Projection type color display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61265214A JPS63118717A (en) | 1986-11-07 | 1986-11-07 | Projection type color display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63118717A true JPS63118717A (en) | 1988-05-23 |
Family
ID=17414111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61265214A Pending JPS63118717A (en) | 1986-11-07 | 1986-11-07 | Projection type color display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63118717A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05257116A (en) * | 1992-11-05 | 1993-10-08 | Casio Comput Co Ltd | Image projector |
-
1986
- 1986-11-07 JP JP61265214A patent/JPS63118717A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05257116A (en) * | 1992-11-05 | 1993-10-08 | Casio Comput Co Ltd | Image projector |
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