MXPA05012445A - Lente de fresnel, pantalla de proyeccion, dispositivo y sistema de proyeccion correspondientes. - Google Patents

Lente de fresnel, pantalla de proyeccion, dispositivo y sistema de proyeccion correspondientes.

Info

Publication number
MXPA05012445A
MXPA05012445A MXPA05012445A MXPA05012445A MXPA05012445A MX PA05012445 A MXPA05012445 A MX PA05012445A MX PA05012445 A MXPA05012445 A MX PA05012445A MX PA05012445 A MXPA05012445 A MX PA05012445A MX PA05012445 A MXPA05012445 A MX PA05012445A
Authority
MX
Mexico
Prior art keywords
fresnel lens
angle
lens
projection device
relates
Prior art date
Application number
MXPA05012445A
Other languages
English (en)
Inventor
Pascal Benoit
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of MXPA05012445A publication Critical patent/MXPA05012445A/es

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00269—Fresnel lenses
    • 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
    • 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
    • G02B3/00—Simple or compound lenses
    • G02B3/10—Bifocal lenses; Multifocal lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1866—Transmission gratings characterised by their structure, e.g. step profile, contours of substrate or grooves, pitch variations, materials
    • 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
    • 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
    • G03B21/62—Translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Projection Apparatus (AREA)
  • Lenses (AREA)

Abstract

La invencion se refiere a un lente de Fresnel. Cada estructura refractiva del lente esta definida por dos superficies, la segunda superficie crea un segundo angulo (°) con la normal sobre el plano de incidencia (P). Se proporcionan al menos dos areas de estructura refractiva, en donde el segundo angulo (°) es igual al angulo de entrada (?int) de un haz. Cada primera superficie refracta la luz de acuerdo a una direccion que es paralela o que no es paralela al eje del lente de acuerdo al area en cuestion. La invencion tambien se refiere a un sistema que comprende un espejo de pliegue y un lente de Fresnel en donde el segundo angulo es igual al angulo de entrada de un rayo parasito obtenido por reflexion sobre el lente de Fresnel y posteriormente sobre el espejo. La invencion se refiere ademas a una pantalla y a un dispositivo de retroproyeccion correspondiente.
MXPA05012445A 2003-05-20 2004-05-17 Lente de fresnel, pantalla de proyeccion, dispositivo y sistema de proyeccion correspondientes. MXPA05012445A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0306064A FR2855273A1 (fr) 2003-05-20 2003-05-20 Lentille de fresnel a eclairer sous incidence elevee
PCT/FR2004/050199 WO2004106992A2 (fr) 2003-05-20 2004-05-17 Lentille de fresnel, ecran de projection, systeme et appareil de projection correspondants.

Publications (1)

Publication Number Publication Date
MXPA05012445A true MXPA05012445A (es) 2006-01-30

Family

ID=33396613

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA05012445A MXPA05012445A (es) 2003-05-20 2004-05-17 Lente de fresnel, pantalla de proyeccion, dispositivo y sistema de proyeccion correspondientes.

Country Status (8)

Country Link
US (1) US7342728B2 (es)
EP (1) EP1625426A2 (es)
JP (1) JP2007504515A (es)
KR (1) KR20060021315A (es)
CN (1) CN100426006C (es)
FR (1) FR2855273A1 (es)
MX (1) MXPA05012445A (es)
WO (1) WO2004106992A2 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2864851A1 (fr) * 2004-01-07 2005-07-08 Thomson Licensing Sa Lentille de fresnel et dispositif d'affichage a projection utilisant une telle lentille
FR2895526A1 (fr) * 2005-12-22 2007-06-29 Thomson Licensing Sas Systeme de retro-eclairage pour panneau d'affichage a cristal liquide et dispositif d'affichage correspondant
TWM373496U (en) * 2009-07-29 2010-02-01 Chunghwa Picture Tubes Ltd Collimated system with multi-backlight source
US8599483B1 (en) 2012-06-05 2013-12-03 3M Innovative Properties Company High angle rear projection system
CN108181781B (zh) * 2013-09-18 2020-12-22 深圳市白雪投影显示技术有限公司 一种透射式的投影显示方法
CN109725484B (zh) * 2019-01-08 2022-03-04 成都菲斯特科技有限公司 一种偏轴短焦正投影光学屏幕及投影显示系统

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101A (ja) * 1982-06-24 1984-01-05 Mitsubishi Electric Corp フレネルレンズ
US4824227A (en) * 1985-11-20 1989-04-25 North American Philips Corporation Optimum riser angle for fresnel lenses in projection screens
GB8804402D0 (en) * 1988-02-25 1988-03-23 Emi Plc Thorn Display device
JPH0387731A (ja) * 1988-11-29 1991-04-12 Canon Inc 画像表示装置
JPH0345988A (ja) * 1989-07-13 1991-02-27 Canon Inc 背面投射型表示装置
JPH03211540A (ja) * 1990-01-17 1991-09-17 Dainippon Printing Co Ltd 透過形スクリーン
JPH04322202A (ja) * 1991-04-22 1992-11-12 Dainippon Printing Co Ltd フレネルレンズ
US5432636A (en) * 1993-05-31 1995-07-11 Kuraray Co., Ltd. Rear-projection screen
JP3311540B2 (ja) 1995-04-28 2002-08-05 富士ゼロックス株式会社 データ管理システム
JP3936412B2 (ja) * 1996-07-15 2007-06-27 大日本印刷株式会社 フレネルレンズシート及び透過型スクリーン
KR100524563B1 (ko) * 1997-09-09 2005-10-31 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 후방 투사형 디스플레이 장치
TW567340B (en) * 2001-05-31 2003-12-21 Ind Tech Res Inst Rear projector display screen without residual image artifacts
CA2474463A1 (en) * 2002-11-26 2004-06-10 Mitsubishi Denki Kabushiki Kaisha Transparent screen and projection display apparatus

Also Published As

Publication number Publication date
US20070091466A1 (en) 2007-04-26
WO2004106992A2 (fr) 2004-12-09
WO2004106992A3 (fr) 2005-05-19
CN100426006C (zh) 2008-10-15
KR20060021315A (ko) 2006-03-07
JP2007504515A (ja) 2007-03-01
EP1625426A2 (fr) 2006-02-15
US7342728B2 (en) 2008-03-11
FR2855273A1 (fr) 2004-11-26
CN1791809A (zh) 2006-06-21

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Legal Events

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