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WO2008123283A1 - Wide-angle projector - Google Patents

Wide-angle projector Download PDF

Info

Publication number
WO2008123283A1
WO2008123283A1 PCT/JP2008/055671 JP2008055671W WO2008123283A1 WO 2008123283 A1 WO2008123283 A1 WO 2008123283A1 JP 2008055671 W JP2008055671 W JP 2008055671W WO 2008123283 A1 WO2008123283 A1 WO 2008123283A1
Authority
WO
WIPO (PCT)
Prior art keywords
projector
wide
projected
optical system
image
Prior art date
Application number
PCT/JP2008/055671
Other languages
French (fr)
Japanese (ja)
Inventor
Hidetaka Hoshino
Original Assignee
Brother Kogyo Kabushiki Kaisha
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 Brother Kogyo Kabushiki Kaisha filed Critical Brother Kogyo Kabushiki Kaisha
Publication of WO2008123283A1 publication Critical patent/WO2008123283A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/16—Optical objectives specially designed for the purposes specified below for use in conjunction with image converters or intensifiers, or for use with projectors, e.g. objectives for projection TV
    • 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
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light
    • 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
    • G03B21/14—Details
    • G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)
  • Projection Apparatus (AREA)

Abstract

Provided is a wide-angle projector which can obtain a magnification ratio for a projected image without requiring focus adjustment. The projector includes a light source (2), alight modulation element (3), and projection optical system (4). The light source (2) generates a light flux for forming an optical image to be projected. The light modulation element (3) modulates the light flux so as to form an optical image to be projected. The field angle of the projection optical system (4) is set to a wide angle. Moreover, the projection optical system (4) has a constant focal length. The projector is moved forward and backward within a predetermined range with respect to a screen. Thus, it is possible to obtain a necessary resolution and modify the image size.
PCT/JP2008/055671 2007-03-29 2008-03-26 Wide-angle projector WO2008123283A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-089130 2007-03-29
JP2007089130A JP2008249871A (en) 2007-03-29 2007-03-29 Wide angle projector

Publications (1)

Publication Number Publication Date
WO2008123283A1 true WO2008123283A1 (en) 2008-10-16

Family

ID=39830771

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/055671 WO2008123283A1 (en) 2007-03-29 2008-03-26 Wide-angle projector

Country Status (2)

Country Link
JP (1) JP2008249871A (en)
WO (1) WO2008123283A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013192102A1 (en) * 2012-06-21 2013-12-27 Qualcomm Mems Technologies, Inc. Efficient spatially modulated illumination system
US9291806B2 (en) 2012-06-21 2016-03-22 Qualcomm Mems Technologies, Inc. Beam pattern projector with modulating array of light sources

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004279544A (en) * 2003-03-13 2004-10-07 Ricoh Co Ltd Line image scanning type picture display device
JP2004326079A (en) * 2003-04-10 2004-11-18 Seiko Epson Corp Projection lens and projection type image display device
JP2004361651A (en) * 2003-06-04 2004-12-24 Ricoh Co Ltd Telecentric lens system and scanning optical system/image display device and image photographing device
JP2005181993A (en) * 2003-11-28 2005-07-07 Sekinosu Kk Projection lens
JP2006521584A (en) * 2003-03-28 2006-09-21 スリーエム イノベイティブ プロパティズ カンパニー Projection lens with a small number of elements for use in combination with a pixel panel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004279544A (en) * 2003-03-13 2004-10-07 Ricoh Co Ltd Line image scanning type picture display device
JP2006521584A (en) * 2003-03-28 2006-09-21 スリーエム イノベイティブ プロパティズ カンパニー Projection lens with a small number of elements for use in combination with a pixel panel
JP2004326079A (en) * 2003-04-10 2004-11-18 Seiko Epson Corp Projection lens and projection type image display device
JP2004361651A (en) * 2003-06-04 2004-12-24 Ricoh Co Ltd Telecentric lens system and scanning optical system/image display device and image photographing device
JP2005181993A (en) * 2003-11-28 2005-07-07 Sekinosu Kk Projection lens

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013192102A1 (en) * 2012-06-21 2013-12-27 Qualcomm Mems Technologies, Inc. Efficient spatially modulated illumination system
CN104365091A (en) * 2012-06-21 2015-02-18 高通Mems科技公司 Efficient spatially modulated illumination system
EP2865182A1 (en) * 2012-06-21 2015-04-29 Qualcomm Mems Technologies, Inc. Efficient spatially modulated illumination system
US9170474B2 (en) 2012-06-21 2015-10-27 Qualcomm Mems Technologies, Inc. Efficient spatially modulated illumination system
US9291806B2 (en) 2012-06-21 2016-03-22 Qualcomm Mems Technologies, Inc. Beam pattern projector with modulating array of light sources

Also Published As

Publication number Publication date
JP2008249871A (en) 2008-10-16

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