KR950005009A - Projection tv - Google Patents

Projection tv Download PDF

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Publication number
KR950005009A
KR950005009A KR1019940014862A KR19940014862A KR950005009A KR 950005009 A KR950005009 A KR 950005009A KR 1019940014862 A KR1019940014862 A KR 1019940014862A KR 19940014862 A KR19940014862 A KR 19940014862A KR 950005009 A KR950005009 A KR 950005009A
Authority
KR
South Korea
Prior art keywords
screen
display screen
lenticular
contrast
blue
Prior art date
Application number
KR1019940014862A
Other languages
Korean (ko)
Inventor
츠네하루 노무라
Original Assignee
오오가 노리오
소니 가부시끼가이샤
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 오오가 노리오, 소니 가부시끼가이샤 filed Critical 오오가 노리오
Publication of KR950005009A publication Critical patent/KR950005009A/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]
    • H04N9/3179—Video signal processing therefor
    • H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
    • 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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/602—Lenticular screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

휘도의 저하를 극력 방지하면서 외광 콘트라스트를 향상시킨 프로젝션 텔레비젼을 제공하는 것.Providing a projection television with improved external light contrast while preventing a decrease in brightness as much as possible.

투사용 브라운관에서 투사되는 영상을 표시화면에 비추는 프로젝션 텔레비젼(2)에 있어서 표시화면(12)이 적색 및 녹색에 비교하여 청색빛의 투과율이 높은 청색고투과 스크린을 가지는 프로젝션 텔레비젼 표시화면을 프레넬 스크린(20)과 렌티큘러 스크린(22)와 콘트라스트 스크린(24)으로 구성하고, 콘트라스트 스크린(24)을 청색고투과 스트린으로 구성하는 것이 바람직하다.In a projection television (2) that projects an image projected from a projection CRT onto a display screen, the display screen (12) is a projection television display screen having a blue high transmission screen having a high blue light transmittance as compared with red and green. It is preferable to comprise 20, the lenticular screen 22, and the contrast screen 24, and the contrast screen 24 is comprised by a blue high permeability screen.

또한 표시화면(12)을 프레넬 스크린(20)과 렌티큘러 스크린(22)으로 구성하고 렌티큘러 스크린 (22)을 청색고투과 스크린으로 구성할 수도 있다.In addition, the display screen 12 may be composed of a Fresnel screen 20 and a lenticular screen 22, and the lenticular screen 22 may be configured as a blue high transmission screen.

Description

프로젝션 텔레비젼Projection tv

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도의 (A),(B)는 본 발명의 일실시예에 관계되는 프로젝션 텔레비젼의 정면측 개략단면도 및 측면측 개략단면도이다. 제2도는 표시면을 구성하는 복층스크린의 분해사시도이다, 제3도는 본 발명의 실시예에 이용하는 스크린의 분광투과율 특성을 나타내는 그래프이다. 제4도는 종래예에 관계되는 스크린의 분광투과율 특성을 나타내는 그래프이다, 제5도는 기타의 종래예에 관계되는 스크린의 분광투과율 특성을 나타내는 그래프이다. 제6도는 할로겐램프의 스펙트럼 예를 나타내는 그래프이다.(A), (B) is a front side schematic sectional drawing and a side side schematic sectional drawing of a projection television which concerns on one Embodiment of this invention. FIG. 2 is an exploded perspective view of the multilayer screen constituting the display surface. FIG. 3 is a graph showing the spectral transmittance characteristics of the screen used in the embodiment of the present invention. 4 is a graph showing the spectral transmittance characteristics of the screen according to the conventional example, and FIG. 5 is a graph showing the spectral transmittance characteristics of the screen according to the other conventional examples. 6 is a graph showing an example spectrum of a halogen lamp.

Claims (3)

투사용 브라운관에서 투사되는 영상을 표시화면에 비추는 프로젝션 텔레비젼에 있어서, 상기 표시화면이 적색 및 녹색에 비교하여 청색빛의 투과율이 높은 청색고투과 스크린을 가지는 것을 특징으로 하는 프로젝션 텔레비젼.A projection television that projects an image projected from a projection tube to a display screen, wherein the display screen has a blue high transmission screen having a high blue light transmittance as compared with red and green. 제1항에 있어서, 상기 표시화면이 프레넬 스크린과 렌티큘러 스크린과 콘트라스트 스크린으로 이루고, 이 콘트라스트 스크린이 청색고투과 스크린으로 구성하고 있는 것을 특징으로 하는 프로젝션 텔레비젼.The projection television according to claim 1, wherein the display screen comprises a Fresnel screen, a lenticular screen and a contrast screen, and the contrast screen comprises a blue high permeability screen. 제1항에 있어서, 상기 표시화면이 프레넬 스크린과 렌티큘러 스크린으로 이루고, 이 렌티큘러 스크린이 청색고투과 스크린으로 구성하고 있는 것을 특징으로 하는 프로젝션 텔레비젼.The projection television according to claim 1, wherein the display screen comprises a Fresnel screen and a lenticular screen, and the lenticular screen comprises a blue high permeability screen. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940014862A 1993-07-06 1994-06-27 Projection tv KR950005009A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5167058A JPH0730912A (en) 1993-07-06 1993-07-06 Projection television receiver
JP93-167058 1993-07-06

Publications (1)

Publication Number Publication Date
KR950005009A true KR950005009A (en) 1995-02-18

Family

ID=15842625

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940014862A KR950005009A (en) 1993-07-06 1994-06-27 Projection tv

Country Status (2)

Country Link
JP (1) JPH0730912A (en)
KR (1) KR950005009A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3329147B2 (en) * 1995-07-03 2002-09-30 松下電器産業株式会社 Screen fixing device
JPH10186270A (en) * 1996-12-27 1998-07-14 Hitachi Ltd Projection optical system and projection type picture display device using it
CN107219238A (en) * 2017-06-14 2017-09-29 鹤山市中富兴业电路有限公司 A kind of printed substrate green oil detection means and detection method

Also Published As

Publication number Publication date
JPH0730912A (en) 1995-01-31

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