KR980007620A - Lighting equipment for liquid crystal projects - Google Patents

Lighting equipment for liquid crystal projects Download PDF

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Publication number
KR980007620A
KR980007620A KR1019960025213A KR19960025213A KR980007620A KR 980007620 A KR980007620 A KR 980007620A KR 1019960025213 A KR1019960025213 A KR 1019960025213A KR 19960025213 A KR19960025213 A KR 19960025213A KR 980007620 A KR980007620 A KR 980007620A
Authority
KR
South Korea
Prior art keywords
light
opening
reflecting means
reflecting
liquid crystal
Prior art date
Application number
KR1019960025213A
Other languages
Korean (ko)
Other versions
KR100188957B1 (en
Inventor
최순철
Original Assignee
김광호
삼성전자주식회사
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.)
Filing date
Publication date
Application filed by 김광호, 삼성전자주식회사 filed Critical 김광호
Priority to KR1019960025213A priority Critical patent/KR100188957B1/en
Publication of KR980007620A publication Critical patent/KR980007620A/en
Application granted granted Critical
Publication of KR100188957B1 publication Critical patent/KR100188957B1/en

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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]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3155—Modulator illumination systems for controlling the light source
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/28—Reflectors in projection beam

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Crystal (AREA)
  • Projection Apparatus (AREA)

Abstract

본 발명은 액정프로젝트의 조명장치에 관한 것으로서, 광원 및 광원이 위치되는 제1초점과 광원에서 방사된 광을 반사시켜 제2초점에 수렴시키는 타원형 반사경 및 타원형 반사기의 제2초점위치에 배치되어 타원형반사경에서 반사된 광을 선택적으로 투과시키는 개구부를 갖는 광제어판, 개구부외로 광제어판에 입사되는 광을 반사시키도록 개구부주위에 부착된 제1반사수단, 제1반사수단에서 반사된 광을 되반사시켜 개구부를 통해 투과시키는 제2반사수단을 구비함으로써, 타원형반사경으로부터 반사되어 광제어판의 개구부를 직접통과하지 못하는 무효광을 제1반사수단 및 제2반사수단에 의해 개구부내로 재집속하기 때문에 광이용효율이 증대된다.The present invention relates to a lighting device for a liquid crystal project, which comprises a first focal point in which a light source and a light source are located, an elliptical reflector for reflecting light emitted from the light source and converging on a second focal point, A light control plate having an opening for selectively transmitting light reflected from the reflector, a first reflecting means attached around the opening to reflect the light incident on the light control plate outside the opening, And the second reflecting means for transmitting the light through the opening. Therefore, since the ineffective light reflected by the elliptical reflecting mirror and unable to directly pass through the opening of the optical control plate is re-focused into the opening by the first reflecting means and the second reflecting means, Is increased.

Description

액정프로젝트의 조명장치Lighting equipment for liquid crystal projects

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 액정프로젝트의 종래 조명장치의 광학적 구성을 개략적으로 도시한 것이다.Figure 1 schematically shows the optical configuration of a conventional illumination device of a liquid crystal project.

제2도는 본 발명에 따른 액정프로젝트의 조명장치의 광학적 구성을 개략적으로 도시한 것이다.FIG. 2 schematically shows an optical configuration of a lighting apparatus of a liquid crystal project according to the present invention.

Claims (3)

광원 및 상기 광원이 위치되는 제1초점과 상기 광원에서 방사된 광을 반사시켜 제2초점에 수렴시키는 타원형 반사경 및 상기 2초점위치에 배치되어 상기 타원형반사경에서 반사된 광을 선택적으로 투과시키는 개구부를 갖는 광제어판을 구비한 액정프로젝트의 조명장치에 있어서, 상기 개구부외로 상기 광제어판에 입사되는 광을 반사시키도록 상기 개구부주위에 부착된 제1반사수단; 및 상기 제1반사수단에서 반사된 광을 집속하고, 집속된 광을 반사시켜 상기 개구부를 통해 투과시키는 제2반사수단;을 구비한 것을 특징으로 하는 액정프로젝트의 조명장치.An elliptical reflector for reflecting a light emitted from the light source and converging at a second focus, and an aperture for selectively transmitting light reflected from the elliptical reflector, A first reflecting means attached around the opening to reflect light incident on the light control plate outside the opening; And second reflecting means for focusing the light reflected by the first reflecting means and transmitting the reflected light through the opening. 제1항에 있어서, 상기 제1반사수단은 상기 개구부주위에 마련된 평면거울인 것을 특징으로 하는 액정프로젝트의 조명장치.The lighting apparatus of a liquid crystal projector according to claim 1, wherein the first reflecting means is a flat mirror provided around the opening. 제1항에 있어서, 상기 제2반사수단은 구면오목거울 또는 타원오목거울로 된 것을 특징으로 하는 액정프로젝트의 조명장치.The illumination device according to claim 1, wherein the second reflecting means is a spherical concave mirror or an elliptical concave mirror.
KR1019960025213A 1996-06-28 1996-06-28 Lighting device for lcd projector KR100188957B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960025213A KR100188957B1 (en) 1996-06-28 1996-06-28 Lighting device for lcd projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960025213A KR100188957B1 (en) 1996-06-28 1996-06-28 Lighting device for lcd projector

Publications (2)

Publication Number Publication Date
KR980007620A true KR980007620A (en) 1998-03-30
KR100188957B1 KR100188957B1 (en) 1999-06-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960025213A KR100188957B1 (en) 1996-06-28 1996-06-28 Lighting device for lcd projector

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KR (1) KR100188957B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100890736B1 (en) 2008-02-22 2009-03-26 (주)이즈미디어 Image sensor detection lighting device and image sensor detection machine

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Publication number Publication date
KR100188957B1 (en) 1999-06-01

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