JPH1124164A - Color liquid crystal projector - Google Patents
Color liquid crystal projectorInfo
- Publication number
- JPH1124164A JPH1124164A JP9178253A JP17825397A JPH1124164A JP H1124164 A JPH1124164 A JP H1124164A JP 9178253 A JP9178253 A JP 9178253A JP 17825397 A JP17825397 A JP 17825397A JP H1124164 A JPH1124164 A JP H1124164A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light
- image
- screen
- color
- 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.)
- Withdrawn
Links
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
- H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
- H04N9/3114—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133621—Illuminating devices providing coloured light
- G02F1/133622—Colour sequential illumination
Landscapes
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Mechanical Optical Scanning Systems (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、反射鏡式のカラ
ー液晶投影装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflecting mirror type color liquid crystal projector.
【0002】[0002]
【従来の技術】従来のカラー液晶投影装置としては、主
として、光の3原色分解方式のものか、カラー液晶板を
用いた方式のものが使用されている。2. Description of the Related Art As a conventional color liquid crystal projection apparatus, a three-primary-color separation system of light or a system using a color liquid crystal plate is mainly used.
【0003】[0003]
【発明が解決しようとする課題】しかし、3原色分解方
式のものは、単板液晶を3枚必要とし、単一光源からの
光は、3原色に分解されて各色に対応した液晶板を透過
し、合成されてスクリーン上にカラー画像を投影する。
このため、構成が複雑で、装置が大型になる。However, the three-primary-color separation type requires three single-plate liquid crystals, and light from a single light source is separated into three primary colors and transmitted through the liquid crystal plate corresponding to each color. Then, the image is synthesized and a color image is projected on a screen.
Therefore, the configuration is complicated and the device becomes large.
【0004】カラー液晶板を用いる方式のものは、単板
液晶でスクリーン上にカラー画像を投影できるが、光の
透過度が低く、僅か数%に過ぎない。このため、スクリ
ーン上に投影される液晶カラー画像の画像の照度が低
い。In a system using a color liquid crystal plate, a color image can be projected on a screen with a single plate liquid crystal, but the light transmittance is low, and it is only a few percent. Therefore, the illuminance of the liquid crystal color image projected on the screen is low.
【0005】この発明は、このような従来の問題点を解
決するためになされたもので、液晶カラー画像の投影画
像の照度が高く、かつ構成が簡単で小型のカラー液晶投
影装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and it is an object of the present invention to provide a small-sized color liquid crystal projector having a simple structure and high illuminance of a projected liquid crystal color image. With the goal.
【0006】[0006]
【課題を解決するための手段】この発明が提供するカラ
ー液晶投影装置は、光源と、光源からの光の3原色を順
次反射する少なくとも3枚の反射鏡と、各反射鏡に反射
されて透過する光の3原色のそれぞれに対応する、投影
しようとするカラー画像のうちの単色画像を順次表示す
る液晶板と、液晶板に表示された各単色画像をスクリー
ン上に投影する投影レンズとを備えたものである。A color liquid crystal projection apparatus provided by the present invention comprises a light source, at least three reflecting mirrors for sequentially reflecting the three primary colors of light from the light source, and a reflecting mirror for transmitting light. A liquid crystal plate for sequentially displaying monochromatic images of color images to be projected corresponding to each of the three primary colors of light to be projected, and a projection lens for projecting each monochromatic image displayed on the liquid crystal plate onto a screen. It is a thing.
【0007】上記反射鏡は、多層膜で形成することがで
きる。[0007] The reflecting mirror can be formed of a multilayer film.
【0008】[0008]
【作用】この発明によれば、目の残像時間内に、光の3
原色の各色の画像をスクリーン上で順次重ねて見ること
ができる。このため、スクリーン上の画像がカラー画像
にみえる。According to the present invention, the light of 3
Images of the primary colors can be sequentially superimposed on the screen. Therefore, the image on the screen looks like a color image.
【0009】このカラー画像は、投影しようとするカラ
ー画像のうちの3つの単色画像を、それぞれの色に対応
する反射光によってスクリーン上に投影したものである
ので、照度の高い鮮明なものとなる。[0009] This color image is obtained by projecting three monochromatic images of the color image to be projected onto the screen by reflected light corresponding to the respective colors, so that a clear image with high illuminance is obtained. .
【0010】なお、フィルターを用いても、上記と同様
の効果を得ることができるが、フィルターを構成する材
質の光透過度が影響して、反射鏡を使用するよりも、光
束強度の損失が大となる。Although the same effect as described above can be obtained by using a filter, the light transmittance of the material constituting the filter affects the loss of the luminous flux intensity compared with the use of a reflecting mirror. It will be great.
【0011】また、1枚の液晶板と少なくとも3枚の反
射鏡でスクリーン上にカラー画像を投影できるので、装
置が簡単かつ小型になる。In addition, since a color image can be projected on a screen by one liquid crystal plate and at least three reflecting mirrors, the apparatus is simple and small.
【0012】反射鏡を多層膜で形成した場合には、液晶
板に害を与える紫外線と赤外線は反射されない。このた
め、液晶板は紫外線と赤外線から保護される。When the reflecting mirror is formed of a multilayer film, ultraviolet rays and infrared rays that harm the liquid crystal plate are not reflected. Therefore, the liquid crystal plate is protected from ultraviolet rays and infrared rays.
【0013】[0013]
【発明の実施の形態】以下、この発明の実施の形態を実
施例によって説明する。Embodiments of the present invention will be described below with reference to embodiments.
【0014】図1は実施例のカラー液晶投影装置の構成
を示す。FIG. 1 shows the configuration of a color liquid crystal projection apparatus according to an embodiment.
【0015】図において、1は光源、2は光源1からの
光を液晶板4に向けて反射する回転反射鏡である。回転
反射鏡2は、光の3原色のうち、R(Red)のみを反
射するR反射鏡と、G(Green)のみを反射するG
反射鏡と、B(Blue)のみを反射するB反射鏡とで
構成された正六角柱の鏡である。各面を形成する鏡面
は、R,G,Bの各反射鏡となっていて、この順序で左
廻りに6個配置されている。この回転反射鏡2は、中心
軸を通る回転軸3を中心して矢印方向へ(右)回転す
る。Mはその駆動モータである。In FIG. 1, reference numeral 1 denotes a light source, and reference numeral 2 denotes a rotary reflecting mirror for reflecting light from the light source 1 toward the liquid crystal plate 4. The rotary reflecting mirror 2 includes an R reflecting mirror that reflects only R (Red) and a G that reflects only G (Green) among the three primary colors of light.
The mirror is a regular hexagonal prism composed of a reflecting mirror and a B reflecting mirror that reflects only B (Blue). The mirrors forming each surface are R, G, and B reflecting mirrors, and six mirrors are arranged counterclockwise in this order. The rotary reflecting mirror 2 rotates (right) in a direction indicated by an arrow about a rotation axis 3 passing through a central axis. M is the drive motor.
【0016】4は液晶板で、回転反射鏡2のR,G,B
の各鏡面によって反射される指定波長の光が透過する。
5は光源1に焦点を合わせて配置したフレネルレンズ
で、回転反射鏡2からの反射光を液晶板4に垂直に入射
させ、垂直に透過させるためのものである。Reference numeral 4 denotes a liquid crystal plate, and R, G, B of the rotary reflecting mirror 2
The light of the designated wavelength reflected by each mirror surface is transmitted.
Reference numeral 5 denotes a Fresnel lens arranged so as to be focused on the light source 1, for causing reflected light from the rotary reflecting mirror 2 to be vertically incident on the liquid crystal plate 4 and transmitted vertically.
【0017】6は投影レンズ7の入射瞳に焦点を合わせ
たフレネルレンズで、液晶板4を透過したR,G,Bの
各反射色は、ここで集光されて投影レンズ7に入射され
る。Reference numeral 6 denotes a Fresnel lens focused on the entrance pupil of the projection lens 7, and the R, G, and B reflection colors transmitted through the liquid crystal plate 4 are condensed here and incident on the projection lens 7. .
【0018】8は投影しようとするカラー画像である。
9は、光の3原色分解を利用してカラー画像8をR,
G,Bの各(単色)画像に時分割して順次液晶板4に表
示するとともに、各画像と回転反射鏡2による反射色と
の時間同期をとる制御手段である。Reference numeral 8 denotes a color image to be projected.
Reference numeral 9 designates a color image 8 as R,
This is control means for time-dividing each of the G and B (single color) images and sequentially displaying the images on the liquid crystal plate 4 and time synchronizing each image with the color reflected by the rotary reflecting mirror 2.
【0019】7は、投影レンズで、液晶板4に時分割表
示されるR,G,Bの各画像を、時間同期をとった回転
反射鏡2からの反射光によって、スクリーン10上に投
影する。Reference numeral 7 denotes a projection lens, which projects each of R, G, and B images time-divisionally displayed on the liquid crystal plate 4 onto the screen 10 by reflected light from the rotating reflecting mirror 2 synchronized with time. .
【0020】実施例のカラー液晶投影装置は、上述のよ
うな構成となっているので、液晶板4に順次表示される
カラー画像8のR,G,Bの各画像は、これと時間同期
をとった回転反射鏡2の反射光によってスクリーン10
上に順次投影される。順次投影される画像は、目の残像
時間内に、スクリーン10上に次々と重ねてあらわれる
ので、スクリーン上では、カラー画像となる。Since the color liquid crystal projection device of the embodiment has the above-described configuration, the R, G, and B images of the color image 8 sequentially displayed on the liquid crystal plate 4 are time-synchronized therewith. The screen 10 is generated by the reflected light of the rotating reflecting mirror 2 taken.
Projected on top. The sequentially projected images appear one after another on the screen 10 within the afterimage time of the eyes, and thus become a color image on the screen.
【0021】このカラー画像は、投影しようとするカラ
ー画像8のうちのR,G,Bの各画像を、それぞれの色
に対応する反射光によってスクリーン上に投影したもの
であるので、照度の高い鮮明なものとなる。This color image is obtained by projecting each of the R, G, and B images of the color image 8 to be projected onto the screen by the reflected light corresponding to each color. It will be clear.
【0022】また、1枚の液晶板4と回転反射鏡2でス
クリーン10上にカラー画像を投影できるので、装置が
簡単かつ小型になる。Further, since a color image can be projected on the screen 10 by one liquid crystal plate 4 and the rotary reflecting mirror 2, the apparatus is simple and small.
【0023】なお、上記反射鏡2の各鏡面は多層膜で形
成することができる。このようにすると、液晶板4に害
を与える紫外線と赤外線は反射されないので、液晶板4
を保護することができる。Each mirror surface of the reflecting mirror 2 can be formed by a multilayer film. In this case, since the ultraviolet rays and infrared rays that harm the liquid crystal plate 4 are not reflected, the liquid crystal plate 4 is not reflected.
Can be protected.
【0024】[0024]
【発明の効果】以上説明したように、この発明によれ
ば、上述のような構成としたので、次の効果を奏する。As described above, according to the present invention, since the above-described configuration is adopted, the following effects are obtained.
【0025】(1)液晶カラー画像のスクリーン上の投
影画像の照度を高くすることができる。(1) The illuminance of the projected image of the liquid crystal color image on the screen can be increased.
【0026】(2)装置が簡単で小型になる。(2) The apparatus is simple and compact.
【図1】 実施例のカラー液晶投影装置の構成図FIG. 1 is a configuration diagram of a color liquid crystal projection device according to an embodiment.
1 光源 2 回転反射鏡 3 回転軸 4 液晶板 5,6 フレネルレンズ 7 投影レンズ 10 スクリーン DESCRIPTION OF SYMBOLS 1 Light source 2 Rotating reflecting mirror 3 Rotation axis 4 Liquid crystal plate 5, 6 Fresnel lens 7 Projection lens 10 Screen
Claims (2)
射する少なくとも3枚の反射鏡と、各反射鏡に反射され
て透過する光の3原色のそれぞれに対応する、投影しよ
うとするカラー画像のうちの単色画像を順次表示する液
晶板と、液晶板に表示された各単色画像をスクリーン上
に投影する投影レンズとを備えたカラー液晶投影装置。1. A light source, at least three reflecting mirrors for sequentially reflecting three primary colors of light from the light source, and projections corresponding to each of the three primary colors of light reflected and transmitted by each reflecting mirror. A color liquid crystal projection device comprising: a liquid crystal plate for sequentially displaying monochromatic images of a color image; and a projection lens for projecting each monochromatic image displayed on the liquid crystal plate onto a screen.
求項1記載のカラー液晶投影装置。2. The color liquid crystal projection device according to claim 1, wherein said reflecting mirror is formed of a multilayer film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9178253A JPH1124164A (en) | 1997-07-03 | 1997-07-03 | Color liquid crystal projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9178253A JPH1124164A (en) | 1997-07-03 | 1997-07-03 | Color liquid crystal projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH1124164A true JPH1124164A (en) | 1999-01-29 |
Family
ID=16045271
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9178253A Withdrawn JPH1124164A (en) | 1997-07-03 | 1997-07-03 | Color liquid crystal projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH1124164A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001049042A1 (en) * | 1999-12-24 | 2001-07-05 | Koninklijke Philips Electronics N.V. | Color projection system |
WO2001077737A1 (en) * | 2000-04-05 | 2001-10-18 | Matsushita Electric Industrial Co., Ltd. | Color image display apparatus |
US6508554B2 (en) | 2000-06-12 | 2003-01-21 | Matsushita Electric Industrial Co., Ltd. | Projection-type image display apparatus |
US6511184B2 (en) | 2000-04-05 | 2003-01-28 | Matsushita Electric Industrial Co., Ltd. | Color image display apparatus |
US6568811B2 (en) | 2000-06-12 | 2003-05-27 | Matsushita Electric Industrial Co., Ltd. | Color image display device and projection-type image display apparatus |
WO2003046640A1 (en) * | 2001-11-27 | 2003-06-05 | Matsushita Electric Industrial Co., Ltd. | Single-panel projection type image display apparatus |
CN100395634C (en) * | 2004-08-07 | 2008-06-18 | 鸿富锦精密工业(深圳)有限公司 | Backlight module |
CN102998883A (en) * | 2011-09-08 | 2013-03-27 | 孔子龙 | Partitioned projector |
CN106406004A (en) * | 2016-12-12 | 2017-02-15 | 广景视睿科技(深圳)有限公司 | Curved-surface wavelength conversion system |
-
1997
- 1997-07-03 JP JP9178253A patent/JPH1124164A/en not_active Withdrawn
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001049042A1 (en) * | 1999-12-24 | 2001-07-05 | Koninklijke Philips Electronics N.V. | Color projection system |
WO2001077737A1 (en) * | 2000-04-05 | 2001-10-18 | Matsushita Electric Industrial Co., Ltd. | Color image display apparatus |
US6511184B2 (en) | 2000-04-05 | 2003-01-28 | Matsushita Electric Industrial Co., Ltd. | Color image display apparatus |
US6508554B2 (en) | 2000-06-12 | 2003-01-21 | Matsushita Electric Industrial Co., Ltd. | Projection-type image display apparatus |
US6568811B2 (en) | 2000-06-12 | 2003-05-27 | Matsushita Electric Industrial Co., Ltd. | Color image display device and projection-type image display apparatus |
WO2003046640A1 (en) * | 2001-11-27 | 2003-06-05 | Matsushita Electric Industrial Co., Ltd. | Single-panel projection type image display apparatus |
CN100395634C (en) * | 2004-08-07 | 2008-06-18 | 鸿富锦精密工业(深圳)有限公司 | Backlight module |
CN102998883A (en) * | 2011-09-08 | 2013-03-27 | 孔子龙 | Partitioned projector |
CN106406004A (en) * | 2016-12-12 | 2017-02-15 | 广景视睿科技(深圳)有限公司 | Curved-surface wavelength conversion system |
CN106406004B (en) * | 2016-12-12 | 2018-02-09 | 广景视睿科技(深圳)有限公司 | A kind of curved surface Wavelength conversion system |
US10481389B2 (en) | 2016-12-12 | 2019-11-19 | Iview Displays (Shenzhen) Company Ltd. | Curved-surface apparatus for wavelength converting |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20040907 |