KR890008583A - Lcd프로젝터의 광학계 - Google Patents

Lcd프로젝터의 광학계 Download PDF

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Publication number
KR890008583A
KR890008583A KR870013676A KR870013676A KR890008583A KR 890008583 A KR890008583 A KR 890008583A KR 870013676 A KR870013676 A KR 870013676A KR 870013676 A KR870013676 A KR 870013676A KR 890008583 A KR890008583 A KR 890008583A
Authority
KR
South Korea
Prior art keywords
optical system
lcd
lcd projector
lamp
lens
Prior art date
Application number
KR870013676A
Other languages
English (en)
Other versions
KR900009062B1 (ko
Inventor
박홍철
Original Assignee
최근선
주식회사 금성사
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 최근선, 주식회사 금성사 filed Critical 최근선
Priority to KR1019870013676A priority Critical patent/KR900009062B1/ko
Publication of KR890008583A publication Critical patent/KR890008583A/ko
Application granted granted Critical
Publication of KR900009062B1 publication Critical patent/KR900009062B1/ko

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Classifications

    • 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
    • G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
    • 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

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

Abstract

내용 없음

Description

LCD프로젝터의 광학계
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제2도는 본 발명중 LCD의 지향성에 대한 확대도.
제3도는 본 발명에 따른 프로젝숀 광학계의 구성도.
제4도는 본 발명의 프로젝숀의 렌즈 단면도.

Claims (3)

  1. LCD프로젝터 광학계에 있어서, 램프(1)의 위치를 광축에서 벗어난 지점에 위치하게 하고 콘덴서렌즈(10)와 필드렌즈(11)에 의해 생기는 램프의 이메지(13)를 LCD(5)로부터 먼 곳에 위치하게 하여 주공선이 LCD에 입사하는 입사가(δ)의 변이가 크지않도록한 특징으로 이루어진 LCD프로젝터의 광학계.
  2. 제1항에 있어서, 램프(1)광축으로부터 벗어나는 거리가, LCD(5) 중심에 입사하는 두광선의 입사각이 최적의 콘트라스를 얻을수 있는 15°각도가 되도록 형성한 것을 특징으로 하는 LCD프로젝터의 광학계.
  3. 제1항에 있어서, 프로젝숀렌즈의 형태가 반원형렌즈로 구성된 LCD프로젝터의 광학계.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870013676A 1987-11-30 1987-11-30 Lcd 프로젝터의 광학계 KR900009062B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019870013676A KR900009062B1 (ko) 1987-11-30 1987-11-30 Lcd 프로젝터의 광학계

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019870013676A KR900009062B1 (ko) 1987-11-30 1987-11-30 Lcd 프로젝터의 광학계

Publications (2)

Publication Number Publication Date
KR890008583A true KR890008583A (ko) 1989-07-12
KR900009062B1 KR900009062B1 (ko) 1990-12-17

Family

ID=19266552

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870013676A KR900009062B1 (ko) 1987-11-30 1987-11-30 Lcd 프로젝터의 광학계

Country Status (1)

Country Link
KR (1) KR900009062B1 (ko)

Also Published As

Publication number Publication date
KR900009062B1 (ko) 1990-12-17

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