KR960020449A - Image display device with gradation variable transmission filter - Google Patents

Image display device with gradation variable transmission filter Download PDF

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Publication number
KR960020449A
KR960020449A KR1019940029770A KR19940029770A KR960020449A KR 960020449 A KR960020449 A KR 960020449A KR 1019940029770 A KR1019940029770 A KR 1019940029770A KR 19940029770 A KR19940029770 A KR 19940029770A KR 960020449 A KR960020449 A KR 960020449A
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South Korea
Prior art keywords
light
image
transmission filter
control valve
image display
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KR1019940029770A
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Korean (ko)
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KR0145632B1 (en
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임대영
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배순훈
대우전자 주식회사
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Priority to KR1019940029770A priority Critical patent/KR0145632B1/en
Publication of KR960020449A publication Critical patent/KR960020449A/en
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    • 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
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's

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

Abstract

본 발명은 계조가변형 투과필터를 갖춘 화상표시장치에 관한 것으로, 광원(10)에서 입사되는 광을 일정한 패턴으로 투과시키는 소오스 스톱부재(11)와, 그 소오스 스톱부재(11)를 투과한 광으로부터 컬러화상의 표시를 위한 컬러신호광을 분리함과 더불어 화상의 컬러신호에 대응하는 컬러화상을 결상하는 광분리/광로조절장치 (14,--,18)를 포함하는 광조절밸브(13) 및 투사 스톱부재(19)를 갖추어 상기 입사광의 투과량을 조절하여 얻어지는 광량을 기초로 투사렌즈(20)에 의해 화상의 표시를 수행하는 화상표시시스템에서, 상기 광조절밸브(13)의 전단 또는 후단에 배치되어 전기적인 구동신호레벨에 기초하여 상기 광조절밸브(13)에 입사되는 광 또는 그 광조절밸브(13)에서 광량조절된 광의 투과율을 가변시켜 화상의 계조를 조절하는 투과필터(21)와, 그 투과필터(21)에 인가되는 전기적인 구동신호레벨을 출력하는 제어수단(40)을 포함하여 구성되어 높은 정도의 화상의 계조를 구현하도록 된 것이다.The present invention relates to an image display device having a gradation variable transmission filter, comprising: a source stop member (11) for transmitting light incident from a light source (10) in a predetermined pattern; A light control valve 13 and projection including an optical separation / light path control device 14,-, 18 for separating color signal light for displaying a color image and for forming a color image corresponding to the color signal of the image In an image display system having a stop member 19 to display an image by the projection lens 20 on the basis of the amount of light obtained by adjusting the transmission amount of the incident light, disposed at the front or rear end of the light control valve 13. And a transmission filter 21 for adjusting the gradation of the image by varying the transmittance of the light incident on the light control valve 13 or the light amount adjusted by the light control valve 13 based on the electric drive signal level. Its permeation It comprises a control means 40 for outputting an electric drive signal level applied to the filter 21 is to implement a high degree of image gradation.

Description

계조가변형 투과필터를 갖춘 화상표시장치Image display device with gradation variable transmission filter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 일실시예에 따른 계조가변형 투과필터를 갖춘 화상표시장치의 개략적인 구성을 설명하는 도면,1 is a view for explaining a schematic configuration of an image display device having a gradation variable transmission filter according to an embodiment of the present invention;

제2도는 본 발명에 따른 계조가변형 투과필터의 구동방식을 설명하는 모식도,2 is a schematic diagram illustrating a driving method of a gradation variable transmission filter according to the present invention;

제3도(a)와 (b)와는 본 발명에 따른 계조가변형 투과필터를 갖춘 화상표시장치의 구동방식을 설명하는 타이밍차트이다.3 (a) and 3 (b) are timing charts for explaining a driving method of an image display device equipped with a gradation variable transmission filter according to the present invention.

Claims (5)

광원(10)에서 입사되는 광을 일정한 패턴으로 투과시키는 소오스 스톱부재 (11)와, 그 소오스 스톱부재(11)를 투과한 광으로부터 컬러화상의 표시를 위한 컬러신호광을 분리함과 더불어 화상의 컬러신호에 대응하는 컬러화상을 결상하는 광분리/광로조절장치(14, --,18)를 포함하는 광조절밸브(13) 및 투사 스톱부재(19)를 갖추어 상기 입사광의 투과량을 조절하여 얻어지는 광량을 기초로 투사렌즈(20)에 의해 화상의 표시를 수행하는 화상표시시스템에 있어서, 상기 광조절밸브(13)의 전단과 상기 소오스 스톱부재(11)의 후단에 배치되어 전기적인 구동신호레벨에 기초하여 상기 광조절밸브(13)에 입사되는 광의 투과율을 가변시켜 화상의 제조를 조절하는 투과필터(21)와, 그 투과필터(21)에 인가되는 전기적인 구동신호레벨을 출력하는 제어수단(40)을 포함하는 구성된 것을 특징으로 하는 계조가변형 투과필터를 갖춘 화상표시장치.The source stop member 11 which transmits the light incident from the light source 10 in a predetermined pattern, and the color signal light for displaying a color image are separated from the light transmitted through the source stop member 11, and the color of the image is separated. The light amount obtained by adjusting the transmission amount of the incident light by having a light control valve 13 and a projection stop member 19 including an optical separation / optical path adjusting device 14,-, 18 for forming a color image corresponding to a signal In the image display system for displaying an image by the projection lens 20 on the basis of the above, it is arranged at the front end of the light control valve 13 and the rear end of the source stop member 11 to the electric drive signal level. A transmission filter 21 for controlling the manufacture of an image by varying the transmittance of light incident on the light control valve 13 on the basis thereof, and control means for outputting an electric drive signal level applied to the transmission filter 21 ( Which contains 40) An image display device having a gray scale variable transmission filter, characterized in that a generated. 제1항에 있어서, 상기 투과필터(21)는 전기적인 신호레벨에 따라 입사광에 대한 투광율이 단계적으로 가변되도록 작용하는 LCD소자패널로 구성된 것을 특징으로 하는 계조가변형 투과필터를 갖춘 화상표시장치.The image display apparatus according to claim 1, wherein the transmission filter (21) comprises an LCD element panel which acts so that a light transmittance of incident light varies in stages according to an electrical signal level. 제1항에 있어서, 상기 제어수단(40)은 상기 투과필터(21)에 대해 화상신호의 1필드기간을 N등분하여 그 N등분된 각 구간사이에는 신호리프레쉬기간이 설정되 는 형태로 시분할 구동하는 것을 특징으로 하는 계조가변형 투과필터를 갖춘 화상표시장치.The time division driving method according to claim 1, wherein the control means (40) divides one field period of the image signal with respect to the transmission filter (21) by N equals, and sets the signal refresh period between the equally divided sections. An image display device having a gradation variable transmission filter, characterized in that. 광원(10)에서 임사되는 광을 일정한 패턴으로 투과시키는 소오스 스톱부재(11)와, 그 소오스 스톱부재(11)를 투과한 광으로부터 컬러화상의 표시를 위한 컬러신호광을 분리함과 더불어 화상의 컬러신호에 대응하는 컬러화상을 결상하는 광분리/광로조절장치(14,--,18)를 포함하는 광조절밸브(13) 및 투사 스톱부재(19)를 갖추어 상기 입사광의 투과량을 조절하여 얻어지는 광량을 기초로 투사렌즈(20)에 의해 화상의 표시를 수행하는 화상표시시스템에 있어서, 상기 광조절밸브(13)의 후단과 투사렌즈(20)의 전단 사이에 설치되어 전기적인 구동신호레벨에 기초하여 상기 광조절밸브(13)에서 제공되는 광의 투과율을 가변시켜 화상의 계조를 조절하는 투과필터(21)와, 그 투과필터(21)에 인가되는 전기적인 구동신호레벨을 출력하는 제어수단(40)을 포함하여 구성된 것을 특징으로 하는 계조가변형 투과필터를 갖춘 화상표시장치.The source stop member 11 which transmits the light emitted from the light source 10 in a predetermined pattern, and the color signal light for displaying a color image are separated from the light transmitted through the source stop member 11, and the color of the image is separated. The light amount obtained by adjusting the transmission amount of the incident light by having a light control valve 13 and a projection stop member 19 including an optical separation / optical path adjusting device 14,-, 18 for forming a color image corresponding to a signal In the image display system for displaying an image by the projection lens 20 on the basis of the above, it is provided between the rear end of the light control valve 13 and the front end of the projection lens 20 based on the electric drive signal level. The transmission filter 21 for adjusting the gray level of the image by varying the transmittance of the light provided from the light control valve 13 and the control means 40 for outputting an electric drive signal level applied to the transmission filter 21. ), Including An image display device having a gradation variable transmission filter. 제4항에 있어서, 상기 투과필터(21)는 상기 제어수단(40)에서 제공되는 화상신호의 1필드기간을 N등분하여 그 N등분된 각 구간사이에 신호리프레쉬기간이 설정되는 형태로 규정된 시분할 구동타이밍에 의해 투과율이 단계적으로 가변되도록 작용하는 LCD패널로 구성된 것을 특징으로 하는 계조가변형 투과펄터를 갖춘 화상표시장치.5. The transmission filter (21) according to claim 4, characterized in that the transmission filter (21) divides one field period of the image signal provided from the control means (40) into N equals, and sets a signal refresh period between the respective equally divided sections. An image display device having a gradation variable transmission pulse, characterized in that the LCD panel is configured to act so that the transmittance is gradually changed by time division driving timing. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940029770A 1994-11-14 1994-11-14 Projector having gradation adjustable light transmission filter KR0145632B1 (en)

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KR1019940029770A KR0145632B1 (en) 1994-11-14 1994-11-14 Projector having gradation adjustable light transmission filter

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KR1019940029770A KR0145632B1 (en) 1994-11-14 1994-11-14 Projector having gradation adjustable light transmission filter

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KR960020449A true KR960020449A (en) 1996-06-17
KR0145632B1 KR0145632B1 (en) 1998-09-15

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