KR960020456A - Automatic Light Control of Projection Image Display - Google Patents

Automatic Light Control of Projection Image Display Download PDF

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Publication number
KR960020456A
KR960020456A KR1019940029776A KR19940029776A KR960020456A KR 960020456 A KR960020456 A KR 960020456A KR 1019940029776 A KR1019940029776 A KR 1019940029776A KR 19940029776 A KR19940029776 A KR 19940029776A KR 960020456 A KR960020456 A KR 960020456A
Authority
KR
South Korea
Prior art keywords
light
image display
projection image
optical sensor
projection
Prior art date
Application number
KR1019940029776A
Other languages
Korean (ko)
Other versions
KR0137591B1 (en
Inventor
양진세
남성우
Original Assignee
배순훈
대우전자 주식회사
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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Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940029776A priority Critical patent/KR0137591B1/en
Publication of KR960020456A publication Critical patent/KR960020456A/en
Application granted granted Critical
Publication of KR0137591B1 publication Critical patent/KR0137591B1/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
    • 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]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut

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

Abstract

본 발명은 투사형화상표시장치의 자동광량조절장치에 관한 것으로, 특히 스톱(Stop)원판에 스트립(Strip)형 광센서를 설치하고 프로젝터의 외부에도 광센서를 설치한 투사형화상표시장치의 자동광량조절장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic light intensity control apparatus of a projection image display apparatus. In particular, an automatic light intensity control of a projection image display apparatus in which a strip optical sensor is installed on a stop disk and an optical sensor is also installed outside the projector. Relates to a device.

본 발명의 목적은 투사되는 광량이 외부광의 광량에 따라 자동적으로 조절되는 투사형화상표시장치의 자동광량조절장치를 제공하는 것이다.It is an object of the present invention to provide an automatic light amount control apparatus of a projection image display device in which the amount of light to be projected is automatically adjusted according to the amount of external light.

본 발명의 투사형화상표시장치의 자동광량조절조절장치는 투사형화상표시장치의 광학계내에 있는 스톱(stop)의 전면 소정부위에 스트립(strip)형 광센서(16)를 설치하고, 투사형화상표시장치의 외부에도 광센서(20)를 설치하며, 상기 두 광센서(16), (20)에 의해 측정된 광량을 비교하여 투사광의 세기를 조절하는 마이콤을 소정부위에 설치하여 구성하는 것이다.The automatic light intensity control device of the projection image display device of the present invention is provided with a strip type optical sensor 16 on a predetermined front surface of a stop in the optical system of the projection image display device, The optical sensor 20 is installed outside, and the microcomputer for controlling the intensity of the projection light by comparing the amounts of light measured by the two optical sensors 16 and 20 is installed at a predetermined portion.

Description

투사형화상표시장치의 자동광량조절장치Automatic Light Control of Projection Image Display

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

제1도는 본 발명에 의한 투사형화상표시장치의 광학계를 보여주는 개략도,1 is a schematic diagram showing an optical system of a projection image display device according to the present invention;

제2도는 본 발명에 의한 스톱(stop) 및 스트립(strip)형 광센서를 도시한 개략도,2 is a schematic view showing a stop and strip type optical sensor according to the present invention;

제3도는 본 발명에 의한 투사형화상표시장치의 자동광량조절장치의 작동을 나타내는 개략도.3 is a schematic view showing the operation of the automatic light intensity control apparatus of the projection image display apparatus according to the present invention.

Claims (1)

고휘도의 백색광을 방사하는 광원(18)과, 상기 방사된 백색광을 소정각도로 꺾어 반사시키는 반사거울(20)과, 상기 반사광을 소정각도로 입사시켜 단위화소별로 광로를 조절하여 반사하는 광로조절기(27)과, 상기 광로가 조절된 색광이 결상되며 구멍을 통해 조절된 정도에 비례하는 색광을 통과시키는 스톱(14)과, 상기 광로조절기(27)에서 반사된 광을 손실없이 상기 스톱(14)에 결상시키는 필드렌즈(22)와, 상기 구멍을 통해 통과된 색광을 화면(10)으로 투사하는 투사렌즈(12)를 구비하는 투사형화상표시장치(50)에 있어서, 상기 스톱(12)의 전면 소정부위에 설치된 스트립 (strip)형 광센서(16)와, 상기 투사형화상표시장치(50)의 오부 측면 또는 후면에 설치된 외부광센서(40)를 구비하고, 상기 스트립(strip)형 광센서(16) 및 외부광센서(20)에 의해 출력된 소정의 전기적신호를 디지탈신호로 변환시켜 마이콤(34)에 입력시키는 투사광감지부(30) 및 외부광감지부(32)와, 상기 마이콤(34)에서 비교된 신호를 입력받아 광원(18)의 세기를 조절하는 전기적신호를 발생시키는 투사광조절부(36)를 더 구비하여서 된 것을 특징으로하는 투사형화상표시장치의 자동광량조절장치.A light source 18 emitting high brightness white light, a reflection mirror 20 that reflects the emitted white light at a predetermined angle, and an optical path adjuster that reflects the reflected light by adjusting the light paths for each unit pixel by reflecting the reflected light at a predetermined angle ( 27), a stop 14 for passing the color light in which the optical path is adjusted, and a color light proportional to the degree adjusted through the hole; and the stop 14 without losing the light reflected from the optical path controller 27. A projection image display device (50) having a field lens (22) for forming an image and a projection lens (12) for projecting color light passed through the hole onto a screen (10), wherein the front surface of the stop (12) is provided. A strip type optical sensor 16 provided at a predetermined portion, and an external optical sensor 40 provided on the side or rear side of the wrong part of the projection image display device 50, are provided with the strip type optical sensor ( 16) and predetermined electric power output by the external light sensor 20 The intensity of the light source 18 is received by receiving the signal compared with the projection light sensing unit 30 and the external light sensing unit 32 and the microcom 34 converting the red signal into a digital signal and inputting it to the microcomputer 34. And a projection light control unit (36) for generating an electrical signal to be adjusted. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940029776A 1994-11-14 1994-11-14 Apparatus for automatically controlling intensity of radiation of projector KR0137591B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940029776A KR0137591B1 (en) 1994-11-14 1994-11-14 Apparatus for automatically controlling intensity of radiation of projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940029776A KR0137591B1 (en) 1994-11-14 1994-11-14 Apparatus for automatically controlling intensity of radiation of projector

Publications (2)

Publication Number Publication Date
KR960020456A true KR960020456A (en) 1996-06-17
KR0137591B1 KR0137591B1 (en) 1998-05-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940029776A KR0137591B1 (en) 1994-11-14 1994-11-14 Apparatus for automatically controlling intensity of radiation of projector

Country Status (1)

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KR (1) KR0137591B1 (en)

Also Published As

Publication number Publication date
KR0137591B1 (en) 1998-05-15

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