KR970075982A - 투사형 액정표시장치 - Google Patents

투사형 액정표시장치 Download PDF

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Publication number
KR970075982A
KR970075982A KR1019970019471A KR19970019471A KR970075982A KR 970075982 A KR970075982 A KR 970075982A KR 1019970019471 A KR1019970019471 A KR 1019970019471A KR 19970019471 A KR19970019471 A KR 19970019471A KR 970075982 A KR970075982 A KR 970075982A
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KR
South Korea
Prior art keywords
liquid crystal
crystal display
axis
light
image light
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KR1019970019471A
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English (en)
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KR100503209B1 (ko
Inventor
히로히사 이시노
Original Assignee
이데이 노브유끼
소니 가부시끼가이샤
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Publication of KR970075982A publication Critical patent/KR970075982A/ko
Priority to KR1020050028616A priority Critical patent/KR100524423B1/ko
Application granted granted Critical
Publication of KR100503209B1 publication Critical patent/KR100503209B1/ko

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/102—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
    • G02B27/1046—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources for use with transmissive spatial light modulators
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/102—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
    • G02B27/1026—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources for use with reflective spatial light modulators
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/145—Beam splitting or combining systems operating by reflection only having sequential partially reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/149—Beam splitting or combining systems operating by reflection only using crossed beamsplitting surfaces, e.g. cross-dichroic cubes or X-cubes
    • 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
    • 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]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3167—Modulator illumination systems for polarizing the light beam
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells

Abstract

본 발명은 투과채널의 새는 빛이 다른 채널을 조명하는 것을 방지한다.
광원(1)의 빛에서 다이크로익미러(2, 5)로 3원색(청색(B), 녹색(G), 적색(R))의 조명광(11B, 11G, 11R)이 분리되고, 각각 3원색의 광변조용 액정표시패널(4B, 4G, 4R)에 입사된다. 액정표시패널(4B, 4R)의 출사측에는 각각 수직편광판(8B, 8R)이 배치되고, 액정표시패널(4G)의 출사측에는 수평편광판(8G)이 배치된다. 액정표시패널(4B, 4R, 4G)로부터의 출사광은 다이크로익프리즘(9)에 입사된다. 그리고 액정표시패널(4R)로부터의 적색영상광은, 적색반사막(9a, 9b)에 의해 반사되고, 액정표시패널(4B)로부터의 청색영상광은, 청색반사막(9c, 9d)에 의해 반사되고, 또한 액정표시패널(4G)로부터의 녹색영상광은, 적색반사막(9a, 9b)과 청색반사막(9c, 9d)을 어느 것이나 투과하고, 이들의 영상광이 투사렌즈(10)에 입사하고, 투사된다.

Description

투사형 액정표시장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명이 적용되는 투사형 액정표시장치의 일예의 구성도이다.

Claims (5)

  1. 적어도 3장의 투과형 액정표시패널과 4분할의 다이크로익프리즘을 가지며, 상기 3장의 액정표시패널을 각각 3원색의 영상신호로 구동하는 동시에, 상기 3장의 액정표시패널을 각각 3원색의 원색광으로 조명함으로써, 각각 휘도 변조된 3채널의 투과영상광을 얻고, 이들의 투과영상광을 상기 다이크로익프리즘을 사용하여 합성하고 이 합성영상광을 투사렌즈를 거쳐서 투사하는 투사형 액정표시장치에 있어서, 상기 투과영상광의 1개의 채널은 상기 다이크로익프리즘을 투과하고, 다른 두개의 채널은 상기 다이크로익프리즘에서 반사되어서, 상기 투과영상광의 합성이 행하여지는 동시에, 상기 디이크로익프리즘이 투과되는 1개의 채널의 투과영상광의 편광축을 제1축으로 하고, 상기 다이크로익프리즘에서 반사되는 다른 2개의 채널의 투과영상광의 편광축을 제2축으로 하고, 이들 제1 및 제2편광축이 서로 직교하여 구성되어 있는 것을 특징으로 하는 투사형 액정표시장치.
  2. 제1항에 있어서, 상기 제1축은 수평축이며, 상기 제2축은 수직축인 것을 특징으로 하는 투사형 액정표시장치.
  3. 제1항에 있어서, 상기 제1축은 수평축에 대하여 시계방향으로 θ도의 축이며, 상기 제2축은 수평축에 대하여 반시계방향으로 90-θ도인 것을 특징으로 하는 투사형 액정표시장치.
  4. 제1항에 있어서, 상기 제1축과 제2축을 교환한 것을 특징으로 하는 투사형 액정표시장치.
  5. 제1항에 있어서, 상기 액정표시패널의 출사측에 각각 편광축 회전소자를 설치하고, 이들의 편광축 회전소자에 의해, 상기 다이크로익프리즘을 투과하는 1개의 채널의 투과영상광의 편광축과, 상기 다이크로익프리즘에서 반사되는 다른 2개의 채널의 투과영상광의 편광축과를 서로 직교시키는 것을 특징으로 하는 투사형 액정표시장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970019471A 1996-05-24 1997-05-20 투사형 액정표시장치 KR100503209B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020050028616A KR100524423B1 (ko) 1996-05-24 2005-04-06 투사형 액정표시장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP96-130127 1996-05-24
JP13012796A JP3371190B2 (ja) 1996-05-24 1996-05-24 投射型液晶表示装置

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KR1020050028616A Division KR100524423B1 (ko) 1996-05-24 2005-04-06 투사형 액정표시장치

Publications (2)

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KR970075982A true KR970075982A (ko) 1997-12-10
KR100503209B1 KR100503209B1 (ko) 2005-10-27

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KR1019970019471A KR100503209B1 (ko) 1996-05-24 1997-05-20 투사형 액정표시장치
KR1020050028616A KR100524423B1 (ko) 1996-05-24 2005-04-06 투사형 액정표시장치

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US (1) US5909259A (ko)
EP (2) EP0813091B1 (ko)
JP (1) JP3371190B2 (ko)
KR (2) KR100503209B1 (ko)
CN (1) CN1109914C (ko)
DE (2) DE69734850T2 (ko)
ID (1) ID16954A (ko)
MY (2) MY126391A (ko)

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JP4288774B2 (ja) 1999-07-23 2009-07-01 セイコーエプソン株式会社 投写型表示装置
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CN100476505C (zh) * 2003-07-18 2009-04-08 晶荧光学科技有限公司 一种三维/二维可切换的彩色投影显示装置及其方法
CN101414060A (zh) * 2003-12-19 2009-04-22 株式会社日立制作所 投影光学装置和使用该装置的图像显示装置
JP4335664B2 (ja) * 2003-12-26 2009-09-30 株式会社日立製作所 投射型映像表示装置、背面投射型映像表示装置、光学ユニット及びスクリーンユニット
CN102495475B (zh) * 2006-04-07 2015-02-25 日本电气株式会社 图像显示装置
CN101261430B (zh) * 2007-03-06 2010-11-03 中强光电股份有限公司 照明系统
JP4909141B2 (ja) 2007-03-16 2012-04-04 三洋電機株式会社 投写型表示装置
DE102007027143B3 (de) * 2007-06-13 2009-01-08 Bruker Daltonik Gmbh Verbesserte Kalibrierkurven für Flugzeitmassenspektrometer
CN100592138C (zh) * 2007-07-13 2010-02-24 鸿富锦精密工业（深圳）有限公司 液晶投影仪的光学系统
CN108957921B (zh) * 2017-05-17 2021-05-04 深圳光峰科技股份有限公司 激发光强度控制系统及投影系统
CN109164667A (zh) * 2018-09-03 2019-01-08 深圳小淼科技有限公司 一种投影仪
JP6958530B2 (ja) * 2018-10-10 2021-11-02 セイコーエプソン株式会社 光学モジュールおよび頭部装着型表示装置
CN113741130A (zh) * 2020-05-29 2021-12-03 苏州佳世达光电有限公司 激光投影机

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Also Published As

Publication number Publication date
KR100503209B1 (ko) 2005-10-27
JPH09318922A (ja) 1997-12-12
US5909259A (en) 1999-06-01
KR100524423B1 (ko) 2005-10-26
CN1109914C (zh) 2003-05-28
DE69728214T2 (de) 2004-12-30
DE69734850D1 (de) 2006-01-12
JP3371190B2 (ja) 2003-01-27
MY134727A (en) 2007-12-31
EP0813091A3 (en) 2000-02-23
MY126391A (en) 2006-09-29
EP0813091B1 (en) 2004-03-24
EP1357415A1 (en) 2003-10-29
EP0813091A2 (en) 1997-12-17
CN1170144A (zh) 1998-01-14
ID16954A (id) 1997-11-27
DE69728214D1 (de) 2004-04-29
DE69734850T2 (de) 2006-08-17
EP1357415B1 (en) 2005-12-07

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