KR970009321A - Rear Projection Screen of Projector - Google Patents

Rear Projection Screen of Projector Download PDF

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Publication number
KR970009321A
KR970009321A KR1019950019558A KR19950019558A KR970009321A KR 970009321 A KR970009321 A KR 970009321A KR 1019950019558 A KR1019950019558 A KR 1019950019558A KR 19950019558 A KR19950019558 A KR 19950019558A KR 970009321 A KR970009321 A KR 970009321A
Authority
KR
South Korea
Prior art keywords
sheet
rear projection
projection screen
ball lens
projector
Prior art date
Application number
KR1019950019558A
Other languages
Korean (ko)
Other versions
KR0173702B1 (en
Inventor
이동희
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.)
Filing date
Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019950019558A priority Critical patent/KR0173702B1/en
Publication of KR970009321A publication Critical patent/KR970009321A/en
Application granted granted Critical
Publication of KR0173702B1 publication Critical patent/KR0173702B1/en

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Classifications

    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/003—Light absorbing elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/027—Mountings, adjusting means, or light-tight connections, for optical elements for lenses the lens being in the form of a sphere or ball
    • 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
    • G03B21/10—Projectors with built-in or built-on screen
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

본 발명은 프레넬렌즈가 형성된 제1시트와, 볼렌즈어레이가 형성된 제2시트가 투사빔의 입사방향에 대하여 차례로 배치되어 이루어진 프로젝터의 후면투사스크린에 관한 것으로, 그 구성은 프로젝터의 스크린에 있어서, 상기 스크린(18)은 투사이미지빔의 방향에 대해 제1,2시이트(14,16)가 차례대로 배열되어 이루어지고, 상기 제1시이트(14)는 투사이미지빔의 반대측면에 프레넬렌즈가 형성되고, 상기 제2시이트(16)는 볼렌즈어레이층에 관찰자측면 쪽으로 외부광을 흡수할 수 있는 콘트라스트 보강층이 부가되어 형성되어 있는 것을 특징으로 한다.The present invention relates to a rear projection screen of a projector in which a first sheet on which a fresnel lens is formed and a second sheet on which a ball lens array is formed are sequentially arranged with respect to the incident direction of the projection beam. The screen 18 is formed by arranging first and second sheets 14 and 16 in order with respect to the direction of the projection image beam, and the first sheet 14 has Fresnel lenses on opposite sides of the projection image beam. Is formed, and the second sheet 16 is formed by adding a contrast reinforcing layer capable of absorbing external light toward the viewer side to the ball lens array layer.

Description

프로젝터의 후면투사스크린.Rear projection screen of the projector.

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

제2도는 본 발명에 따른 프로젝터의 후면투사스크린을 나타낸 개략도.2 is a schematic view showing a rear projection screen of the projector according to the present invention.

Claims (8)

프로젝터의 스크린에 있어서, 상기 스크린(18)은 투사이미지빔의 방향에 대해 제1,2시이트(14,16)가 차례대로 배열되어 이루어지고, 상기 제1시이트(14)는 관찰자측면에 프레넬렌즈가 형성되고, 상기 제2시이트(16)는 볼렌즈어레이층에 관찰자측면 쪽으로 외부광을 흡수할 수 있는 콘트라스트 보강층이 부가되어 형성되어 있는 것을 특징으로 하는 프로젝터의 후면투사스크린.In the screen of the projector, the screen 18 is formed by arranging the first and second sheets 14 and 16 in order with respect to the direction of the projection image beam, and the first sheet 14 is Fresnel on the observer's side. The lens is formed, and the second sheet (16) is a rear projection screen of the projector, characterized in that the addition of a contrast reinforcement layer for absorbing external light toward the observer side to the ball lens array layer. 제1항에 있어서, 상기 제2시이트(16)의 볼렌즈어레이의 볼렌즈는 수직부분의 볼렌즈 곡률반경과 수평부분의 볼렌즈 곡률반경이 서로다르게 형성된 것을 특징으로 하는 프로젝터의 후면투사스크린.The rear projection screen according to claim 1, wherein the ball lens of the ball lens array of the second sheet (16) has a different ball lens curvature radius in the vertical portion and a ball lens curvature radius in the horizontal portion. 제2항에 있어서, 상기 제2시이트(16)의 볼렌즈의 곡률반경은 수직부분의 볼렌즈 곡률반경이 수평부분의 볼렌즈 곡률반경 보다 크도록 형성되어 수평방향의 시야각이 수직방향의 시야각보다 크도록 된 것을 특징으로 하는 프로젝터의 후면투사스크린.The curvature radius of the ball lens of the second sheet 16 is formed such that the curvature radius of the vertical portion is greater than the curvature radius of the horizontal portion so that the viewing angle in the horizontal direction is greater than the viewing angle in the vertical direction. Rear projection screen of the projector, characterized in that large. 제1항에 있어서, 상기 제2시이트(16)의 관찰자측면상에는 분산층(fine-mat-surface)(19)가 형성된 것을 특징으로 하는 프로젝터의 후면투사스크린.2. A rear projection screen according to claim 1, characterized in that a fine-mat-surface (19) is formed on the observer side of the second sheet (16). 제1항에 있어서, 상기 제2시이트(16)의 관찰자측 표면내부에는 광확산미립자(diffuser)가 확산된 것을 특징으로 하는 프로젝터의 후면투사스크린.A rear projection screen according to claim 1, wherein light diffusing particles are diffused in the inside of the observer side of the second sheet. 제1항에 있어서, 상기 제2시이트(16)의 관찰자측면의 콘트라스트 보강층(20)의 소정위치에는 투과부(22)가 형성된 것을 특징으로 하는 프로젝터의 후면투사스크린.The rear projection screen of claim 1, wherein a transmissive portion (22) is formed at a predetermined position of the contrast reinforcing layer (20) on the observer side of the second sheet (16). 제6항에 있어서, 상기 콘트라스트 보강층(20)은 표면반사가 없는 무광택의 흑색수지가 표면처리된 것을 특징으로 하는 프로젝터의 후면투사스크린.7. The rear projection screen of claim 6, wherein the contrast reinforcement layer (20) is surface treated with a matte black resin without surface reflection. 제6항에 있어서, 상기 콘트라스트 보강층(20)은 표면반사가 없는 무광택의 도료로 표면처리된 것을 특징으로 하는 프로젝터의 후면투사스크린.The rear projection screen of claim 6, wherein the contrast reinforcement layer (20) is surface treated with a matte paint without surface reflection. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950019558A 1995-07-05 1995-07-05 Rear projection screen for projector KR0173702B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950019558A KR0173702B1 (en) 1995-07-05 1995-07-05 Rear projection screen for projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950019558A KR0173702B1 (en) 1995-07-05 1995-07-05 Rear projection screen for projector

Publications (2)

Publication Number Publication Date
KR970009321A true KR970009321A (en) 1997-02-24
KR0173702B1 KR0173702B1 (en) 1999-03-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950019558A KR0173702B1 (en) 1995-07-05 1995-07-05 Rear projection screen for projector

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6163402A (en) * 1998-06-11 2000-12-19 3M Innovative Properties Company Rear projection screen
US6449089B1 (en) 1998-03-30 2002-09-10 3M Innovative Properties Company Rear projection screen with enhanced contrast

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100422708B1 (en) * 2001-09-24 2004-03-16 엘지전자 주식회사 Projection TV screen for prevention to flicker of light

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6449089B1 (en) 1998-03-30 2002-09-10 3M Innovative Properties Company Rear projection screen with enhanced contrast
US6163402A (en) * 1998-06-11 2000-12-19 3M Innovative Properties Company Rear projection screen
US6515798B1 (en) 1998-06-11 2003-02-04 3M Innovative Properties Company Rear projection screen

Also Published As

Publication number Publication date
KR0173702B1 (en) 1999-03-20

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