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KR980003683A - 투사형 액정 표시 장치 - Google Patents

투사형 액정 표시 장치 Download PDF

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Publication number
KR980003683A
KR980003683A KR1019970022893A KR19970022893A KR980003683A KR 980003683 A KR980003683 A KR 980003683A KR 1019970022893 A KR1019970022893 A KR 1019970022893A KR 19970022893 A KR19970022893 A KR 19970022893A KR 980003683 A KR980003683 A KR 980003683A
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KR
South Korea
Prior art keywords
liquid crystal
crystal display
display device
lens array
light source
Prior art date
Application number
KR1019970022893A
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English (en)
Other versions
KR100266423B1 (ko
Inventor
다카시 가쿠다
마사하루 데구치
후토시 야마사키
다케스케 마루야마
나오히로 고누마
유타카 마츠다
Original Assignee
가나이 츠토무
히다치세사쿠쇼 가부시키가이샤
Priority date (The priority date 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 date listed.)
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Application filed by 가나이 츠토무, 히다치세사쿠쇼 가부시키가이샤 filed Critical 가나이 츠토무
Publication of KR980003683A publication Critical patent/KR980003683A/ko
Application granted granted Critical
Publication of KR100266423B1 publication Critical patent/KR100266423B1/ko

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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]
    • 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
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/095—Refractive optical elements
    • G02B27/0955—Lenses
    • G02B27/0961—Lens arrays
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/0977—Reflective elements
    • G02B27/0983—Reflective elements being curved
    • 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
    • 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
    • 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

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Mathematical Physics (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

액정표시소자를 사용하는 투사형 액정표시장치에 관한 것이며 특히 소형이며 밝기 등의 화질 성능이 양호한 투사형 액정표시장치에 관한 것으로서, 액정표시소자의 사이즈가 작아지면 조명수단에 의해 조명되는)면적이 작아지기 때문에 광원에서 방출된 모든 광속량에 대한 액정표시소자상에 투사되는 광속량의 비가 낮아지는 등의 문제점을 해결하기 위해서, 광원, 광원에서 방출된 광을 조사면에 조사시키는 조명수단, 광을 변조하는액정표시소자 및 액정표시소자에서 출사한 광을 투사하기 위한 투사수단을 포함하며, 조명수단은 적어도 한개의 타원형 미러 및 한개의 구면형 미러를 포함하고, 또 조명수단은 광원측에서 여러개의 렌즈가 광학축에 수직으로 배열된 제1렌즈어레이 및 제2렌즈어레이와 제2렌즈어레이에 의해 방출된 광을 액정표시소자에 고효율로조사하기 위한 집광렌즈를 포함하는 구성으로 하였다.
이런한 구성에 의해서, 광원에서 출사되는 광의 이용효율을 증가시킬 수 있고 따라서 소형이고 양호한 화질성능을 갖는 밝은 토사형 액정표시장치를 제공할 수가 있다.

Description

투사형 액정 표시장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 의한 투사형 액정 표시장치의 광학계의 구성을 도시한 도면.

Claims (8)

  1. 광원, 상기 광원에서 방출된 광을 조사면에 조사시키는 조명수단, 광을 변조하는 액정표시소자 및 상기 액정표시소자에서 출사한 광을 투사하기 위한 투사수단을 포함하며, 상기 조명수단은 적어도 한개의 타원형 미러 및 한개의 구면형 미러를 포함하고, 또 상기 조명수단은 광원측에서 여러개의 렌즈가 광학축에 수직으로배열된 제1렌즈어레이 및 제2렌즈어레이와 상기 제2렌즈어레이에 의해 방출된 광을 상기 액정표시소자에 고효율로 조사하기 위한 집광렌즈를 포함하는 것을 특징으로 하는 투사형 액정표시장치.
  2. 제1항에 있어서, 상기 조명수단의 광원측에 배치된 상기 제1렌즈어레이를 구성하는 상기 렌즈는 직사각형이고, 상기 렌즈중 적어도 하나의 렌즈는 직사각형 형상의 중심에 존재하지 않는 광학축을 갖는 것을 특징으로 하는 투사형 액정표시장치.
  3. 제1항에 있어서, 상기 조명수단의 상기 액정표시소자측에 배치된 상기 제2렌즈어레이를 구성하는 상기렌즈의 적어도 하나의 사각형상이고, 상기 렌즈중 적어도 하나의 렌즈는 직사각형 형상의 중심에 존재하지 않는 광학축을 갖는 것을 특징으로 하는 투사형 액정표시장치.
  4. 제1항에 있어서, 상기 제2렌즈어레이를 구성하는 상기 렌즈중에 적어도 하나는 사변형상이고 적어도 하나는 오각형상인 것을 특징으로 하는 투사형 액정표시장치.
  5. 제1항에 있어서, 상기 집광렌즈는 광학축 근방의 중심부가 평면에 가까운 비구면형상을 갖는 것을 특징으로 하는 투사형 액정표시장치.
  6. 제1항에 있어서, 상기 구면형 미러의 반사면은 알루미늄중착 등에 의해 이루어진 반사막인 것을 특징으로하는 투사형 액정표시장치.
  7. 제1항에 있어서, 상기 제2렌즈어레이는 상기 제1렌즈어에리를 형성하는 각 렌즈에 대응하는 동일수의 렌즈를 갖는 것을 특징으로 하는 투사형 액정표시장치.
  8. 제1항에 있어서, 상기 조명수단은 케이스 전체를 교환하는 것에 의해 교환가능한 것을 특징으로 하는 투사형 액정표시장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970022893A 1996-06-04 1997-06-03 투사형 액정 표시장치 KR100266423B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8141621A JPH09325313A (ja) 1996-06-04 1996-06-04 投射型液晶表示装置
JP96-141621 1996-06-04

Publications (2)

Publication Number Publication Date
KR980003683A true KR980003683A (ko) 1998-03-30
KR100266423B1 KR100266423B1 (ko) 2000-09-15

Family

ID=15296308

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019970022893A KR100266423B1 (ko) 1996-06-04 1997-06-03 투사형 액정 표시장치

Country Status (7)

Country Link
US (2) US6307601B1 (ko)
EP (1) EP0812115B1 (ko)
JP (1) JPH09325313A (ko)
KR (1) KR100266423B1 (ko)
CN (1) CN1085006C (ko)
DE (1) DE69724698T2 (ko)
TW (1) TW382875B (ko)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186629B1 (en) * 1997-12-22 2001-02-13 Sony Corporation Optical device and display apparatus
FR2773223B1 (fr) * 1997-12-29 2001-12-07 Thomson Multimedia Sa Systeme de projection ou visualisation d'images
GB2340619A (en) * 1998-08-11 2000-02-23 Sharp Kk Liquid crystal projector with non-uniform lenslet arrays
JP2000206613A (ja) * 1999-01-11 2000-07-28 Sony Corp 投射型表示装置
JP4521896B2 (ja) * 1999-06-08 2010-08-11 キヤノン株式会社 照明装置、投影露光装置及びデバイス製造方法
US6527393B1 (en) * 1999-07-28 2003-03-04 Seiko Epson Corporation Illumination optical system and projector using same
TW522434B (en) * 2000-06-16 2003-03-01 Matsushita Electric Ind Co Ltd Lamp unit and image projection apparatus
KR100381265B1 (ko) * 2000-12-23 2003-05-01 엘지전자 주식회사 액정 프로젝터의 조명계
EP1417537B1 (en) * 2001-04-25 2008-06-11 Wavien, Inc. Light recovery for projection displays
US6836576B2 (en) 2002-02-08 2004-12-28 Wavien, Inc. Polarization recovery system using light pipes
US6609023B1 (en) * 2002-09-20 2003-08-19 Angel Medical Systems, Inc. System for the detection of cardiac events
US6877882B1 (en) 2003-03-12 2005-04-12 Delta Electronics, Inc. Illumination system for a projection system
JP4972883B2 (ja) * 2005-06-17 2012-07-11 株式会社日立製作所 光学ユニットおよび投射型映像表示装置
US7621646B2 (en) * 2006-07-05 2009-11-24 Hewlett-Packard Development Company Curved band-pass filter
JP4961193B2 (ja) * 2006-11-13 2012-06-27 株式会社日立製作所 投射型表示装置およびそれを用いたマルチ画面表示装置
US8674933B2 (en) * 2007-11-19 2014-03-18 Texas Instruments Incorporated Integrated system with computing and imaging capabilities
CN102736386B (zh) * 2012-05-21 2014-08-13 巴可伟视(北京)电子有限公司 一种用于数字投影机的光源系统
US9646131B2 (en) 2014-06-27 2017-05-09 Oracle International Corporation Intelligent image processing for enterprise applications
US11215916B2 (en) * 2020-05-28 2022-01-04 DigiEngin Inc. Compact size multi-channel light engine projection apparatus

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8901077A (nl) 1989-04-28 1990-11-16 Koninkl Philips Electronics Nv Optische belichtingsstelsel en projectie-apparaat voorzien van een dergelijk stelsel.
JP2674913B2 (ja) 1991-11-18 1997-11-12 松下電器産業株式会社 照明装置
JP2643713B2 (ja) * 1992-03-13 1997-08-20 株式会社日立製作所 液晶投写形ディスプレイ
JPH05268556A (ja) 1992-03-17 1993-10-15 Fujitsu General Ltd 投写用光源装置
JP2973750B2 (ja) 1992-03-31 1999-11-08 松下電器産業株式会社 照明光学装置とそれを用いた投写型表示装置
US5689315A (en) * 1992-07-15 1997-11-18 Matsushita Electric Industrial Co., Ltd. Light valve apparatus which is employed in a projection display system and in a view-finder system
US5541746A (en) * 1992-08-19 1996-07-30 Sanyo Electric Co., Ltd. Light source device for use in liquid crystal projectors
JP3207022B2 (ja) * 1992-11-24 2001-09-10 株式会社日立製作所 投射型表示装置用光源、照明装置および液晶投射型表示装置
US5626416A (en) * 1994-11-29 1997-05-06 Romano; Richard J. Lamp module apparatus
JP3976812B2 (ja) 1995-03-09 2007-09-19 セイコーエプソン株式会社 偏光照明装置および投写型表示装置
US5662401A (en) 1995-12-13 1997-09-02 Philips Electronics North America Corporation Integrating lens array and image forming method for improved optical efficiency

Also Published As

Publication number Publication date
US6351295B2 (en) 2002-02-26
EP0812115A2 (en) 1997-12-10
TW382875B (en) 2000-02-21
DE69724698D1 (de) 2003-10-16
EP0812115B1 (en) 2003-09-10
US20010000056A1 (en) 2001-03-22
JPH09325313A (ja) 1997-12-16
DE69724698T2 (de) 2004-07-08
CN1178432A (zh) 1998-04-08
EP0812115A3 (en) 1998-08-05
US6307601B1 (en) 2001-10-23
CN1085006C (zh) 2002-05-15
KR100266423B1 (ko) 2000-09-15

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