KR960013018A - Lighting device for liquid crystal projectors to increase light efficiency - Google Patents

Lighting device for liquid crystal projectors to increase light efficiency Download PDF

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Publication number
KR960013018A
KR960013018A KR1019940025098A KR19940025098A KR960013018A KR 960013018 A KR960013018 A KR 960013018A KR 1019940025098 A KR1019940025098 A KR 1019940025098A KR 19940025098 A KR19940025098 A KR 19940025098A KR 960013018 A KR960013018 A KR 960013018A
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KR
South Korea
Prior art keywords
light
focus
reflector
light source
lighting device
Prior art date
Application number
KR1019940025098A
Other languages
Korean (ko)
Other versions
KR0135835B1 (en
Inventor
전기욱
Original Assignee
김광호
삼성전자 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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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019940025098A priority Critical patent/KR0135835B1/en
Publication of KR960013018A publication Critical patent/KR960013018A/en
Application granted granted Critical
Publication of KR0135835B1 publication Critical patent/KR0135835B1/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
    • H04N9/3152—Modulator illumination systems for shaping the light beam
    • 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]
    • H04N9/3141—Constructional details thereof
    • H04N9/317—Convergence or focusing systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B2003/0093—Simple or compound lenses characterised by the shape

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection Apparatus (AREA)

Abstract

본 발명은 광효율 증대를 위한 조명장치에 관한것으로, 상세하게는 램프(광원)로 부터의 출사빔을 원뿔형반사경 및 절구형 반사경을 사용하여 발산광을 집속시키는 광효율 증대를 위한 액정 프로젝터용 조명장치에 관한 것이다.The present invention relates to a lighting apparatus for increasing light efficiency, and more particularly, to a lighting apparatus for a liquid crystal projector for condensing emitted light by using a conical reflector and a mortar reflector to emit light from a lamp (light source). It is about.

즉 본 발명에 다른 광효율 증대를 위한 조명장치는 타원형 반사경의 제1초점에 위치한 광원으로부터 방출되어 제2초점으로 집속되지 못하고 외부로 발산하는 광을 반사시켜 집속되도록 하여 주는 원뿔형 반사경 혹은 절구형 반사경을 구비함으로써 영상을 얻기위해 액정 혹은 필름에 투사되는 평행광을 만드는데 필요한 광량을 증가시켜 주므로 광효율을 높여주는 효과가 있다.That is, the lighting device for increasing the light efficiency according to the present invention is a conical reflector or a mortar reflector which is focused from the light source located in the first focus of the elliptical reflector and not focused in the second focus but reflects the light emitted from the outside. By increasing the amount of light required to make parallel light projected on the liquid crystal or film to obtain an image, there is an effect to increase the light efficiency.

Description

광효율 증대를 위한 액정 프로젝터용 조명장치Lighting device for liquid crystal projectors to increase light efficiency

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

제1도는 본 발명에 따른 원뿔형 반사경을 갖춘 광효율 증대를 위한 조명장치의 단면도이고,1 is a cross-sectional view of a lighting device for increasing light efficiency with a conical reflector according to the present invention,

제2도는 본 발명에 따른 절구형 반사경을 갖춘 광효율 증대를 위한 조명장치의 단면도이다.2 is a cross-sectional view of a lighting device for increasing the light efficiency with a mortar reflector according to the present invention.

Claims (4)

광원과, 자체에 상기 광원이 위치하는 제1초점과 상기 광원으로 방출된 광이 반사되어 집속되는 제2초점을 가지는 타원형 반사경 및 상기 제2초점에 집속후 발산하는 광을 평행광으로 굴절시켜 주는 볼록렌즈를 구비한 조명장치에 있어서, 상기 광원으로부터 방출되어 상기 타원형 반사경의 제2초점에 집속되지 않는 모든광을 반사시켜 상기 제2초점으로 모아주는 원뿔형 반사경을 구비하여 된 것을 특징으로 하는 광효율 증대를 위한 조명장치An elliptical reflector having a light source, a first focus on which the light source is located, and a second focus on which light emitted by the light source is reflected and focused, and refracting light emitted after focusing on the second focus into parallel light. An illumination device having a convex lens, comprising: a conical reflector for reflecting all the light emitted from the light source and not focused at the second focal point of the ellipsoidal reflector to be collected at the second focal point. Lighting equipment 제1항에있어서, 상기 원뿔형 반사경은 상기 제2초점을 꼭지점으로 하여 상기 타원형 반사경의 원형개구측과 같은 직경의 원형 개구측으로 이루어진 것을 특징으로 하는 광효율 증대를 위한 조명장치According to claim 1, wherein the conical reflector is a lighting device for increasing the light efficiency, characterized in that made of a circular opening side of the same diameter as the circular opening side of the elliptical reflector with the second focal point as a vertex. 제1항에있어서, 상기 볼록렌즈의 위치는 상기 제2초점으로 부터 상기 타원형 반사경과 반대쪽으로 상기 볼록렌즈의 초점거리만틈 이격된 것을 특징으로 하는 광효율 증대를 위한 조명장치According to claim 1, wherein the position of the convex lens is an illumination device for increasing the light efficiency, characterized in that spaced apart only the focal length of the convex lens from the second focus to the opposite side of the elliptical reflector 광원과, 자치에 상기 광원이 위치하는 제1초점과 상기 광원으로 방출된 광이 반사되어 집속되는 제2초점을 가지는 타원형 반사경 및 상기 제2초점에 집속후 발산하는 광을 평행광으로 굴절시켜 주는 볼록렌즈를 구비한 조명장치에 있어서, 상기 광원으로부터 방출되어 상기 타원형 반사경의 제2초점에 집속되지 않는 모든광을 반사시켜 상기 제2초점으로 모아주는 절구형 반사경을 구비하여 된 것을 특징으로 하는 광효율 증대를 위한 조명장치An elliptical reflector having a light source, a first focus in which the light source is located, and a second focus in which light emitted by the light source is reflected and focused, and refracting light emitted after focusing in the second focus into parallel light. A lighting device having a convex lens, comprising: a light reflector reflecting all the light emitted from the light source and not focused at the second focus of the elliptical reflector to collect at the second focus Lighting device for increase ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940025098A 1994-09-30 1994-09-30 Illumination apparatus for l.c.d projector KR0135835B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940025098A KR0135835B1 (en) 1994-09-30 1994-09-30 Illumination apparatus for l.c.d projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940025098A KR0135835B1 (en) 1994-09-30 1994-09-30 Illumination apparatus for l.c.d projector

Publications (2)

Publication Number Publication Date
KR960013018A true KR960013018A (en) 1996-04-20
KR0135835B1 KR0135835B1 (en) 1998-04-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940025098A KR0135835B1 (en) 1994-09-30 1994-09-30 Illumination apparatus for l.c.d projector

Country Status (1)

Country Link
KR (1) KR0135835B1 (en)

Also Published As

Publication number Publication date
KR0135835B1 (en) 1998-04-27

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