[go: up one dir, main page]

KR970009321A - Rear Projection Screen of Projector - Google Patents

Rear Projection Screen of Projector Download PDF

Info

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
Legal status (The legal status 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 status listed.)
Granted
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
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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

Landscapes

  • 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 of Projector Expired - Fee Related KR0173702B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950019558A KR0173702B1 (en) 1995-07-05 1995-07-05 Rear Projection Screen of Projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950019558A KR0173702B1 (en) 1995-07-05 1995-07-05 Rear Projection Screen of Projector

Publications (2)

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

Family

ID=19419781

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950019558A Expired - Fee Related KR0173702B1 (en) 1995-07-05 1995-07-05 Rear Projection Screen of Projector

Country Status (1)

Country Link
KR (1) KR0173702B1 (en)

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

Similar Documents

Publication Publication Date Title
US7746570B2 (en) Fresnel optical element and projection display apparatus
US7667893B2 (en) Microlens front projection screen
KR0177648B1 (en) Rear-view projector screen
KR870007445A (en) Rear projection system
JPH1062870A (en) Reflection screen and front projection system
KR960706106A (en) Rear projection screen
US20050206853A1 (en) Split image optical display
KR0178734B1 (en) Projection screen of rear view projection tv
KR960020458A (en) Projector Screen
AU777830B2 (en) Projection system
KR970009321A (en) Rear Projection Screen of Projector
KR890000783B1 (en) Rear projection screen
JP2007316415A (en) Sheet member, transmissive screen and rear projection type image display device
JP2007293171A (en) Reflective projection screen and image display device
JP2000111708A (en) Lens array sheet
JP4867167B2 (en) Transmission screen and rear projection display device
JPH04240838A (en) Reflection type screen
JP2006030715A (en) Transmission type screen
JPH11133508A (en) Transmission screen
JPS599649A (en) Transmission type projection screen
JP2007025178A (en) Transmission screen and rear projection display device
JP2008225209A (en) Transmission-type screen, rear projection display device
JP3489135B2 (en) Projection display device
JP2001209130A (en) Rear projection screen
JPH0455315Y2 (en)

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19950705

PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19950705

Comment text: Request for Examination of Application

PG1501 Laying open of application
E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 19980718

Patent event code: PE09021S01D

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 19981017

GRNT Written decision to grant
PR0701 Registration of establishment

Comment text: Registration of Establishment

Patent event date: 19981031

Patent event code: PR07011E01D

PR1002 Payment of registration fee

Payment date: 19981031

End annual number: 3

Start annual number: 1

PG1601 Publication of registration
LAPS Lapse due to unpaid annual fee
PC1903 Unpaid annual fee

Termination category: Default of registration fee

Termination date: 20020813