IN2014DN06746A - - Google Patents

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Publication number
IN2014DN06746A
IN2014DN06746A IN6746DEN2014A IN2014DN06746A IN 2014DN06746 A IN2014DN06746 A IN 2014DN06746A IN 6746DEN2014 A IN6746DEN2014 A IN 6746DEN2014A IN 2014DN06746 A IN2014DN06746 A IN 2014DN06746A
Authority
IN
India
Prior art keywords
light
axis
solid state
exit surface
source device
Prior art date
Application number
Inventor
Koichi Akiyama
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Publication of IN2014DN06746A publication Critical patent/IN2014DN06746A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0905—Dividing and/or superposing multiple light beams
    • 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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • 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
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • G02B27/285—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining comprising arrays of elements, e.g. microprisms
    • 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
    • G02B27/30—Collimators
    • 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
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
    • 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
    • G03B21/2073—Polarisers in the lamp house
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
    • 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
    • H04N9/315—Modulator illumination systems
    • H04N9/3167—Modulator illumination systems for polarizing the light beam
    • 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
    • H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Projection Apparatus (AREA)
  • Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Polarising Elements (AREA)

Abstract

An illumination device (100) includes a solid state light source device (10) a pickup lens unit (20) on which light from the solid state light source device is incident and a polarization conversion element (40). A lens (22) constituting the light exit surface of the pickup lens unit (20) is an aspherical lens having a light exit surface shaped like a rotationally symmetric shape centered on a light axis (40ax) when viewed from a direction of the light axis (40ax) and having a cross section of an aspherical shape when cut with a plane parallel to the light axis (40ax). The light exit surface of the aspherical lens has a function of collimating and then emitting the light having been emitted from the center of the solid state light source device (10) in an area near to the light axis (40ax) and emitting the light so as to converge toward the light axis in an area far from the light axis (40ax)
IN6746DEN2014 2012-02-16 2013-02-08 IN2014DN06746A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012031849A JP5957937B2 (en) 2012-02-16 2012-02-16 Lighting device and projector
PCT/JP2013/000721 WO2013121765A2 (en) 2012-02-16 2013-02-08 Illumination device and projector

Publications (1)

Publication Number Publication Date
IN2014DN06746A true IN2014DN06746A (en) 2015-05-22

Family

ID=47884451

Family Applications (1)

Application Number Title Priority Date Filing Date
IN6746DEN2014 IN2014DN06746A (en) 2012-02-16 2013-02-08

Country Status (9)

Country Link
US (1) US9961314B2 (en)
EP (1) EP2815274B1 (en)
JP (1) JP5957937B2 (en)
KR (1) KR101723888B1 (en)
CN (1) CN103257519B (en)
IN (1) IN2014DN06746A (en)
RU (1) RU2583340C2 (en)
TW (1) TWI456332B (en)
WO (1) WO2013121765A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6550781B2 (en) * 2015-02-17 2019-07-31 セイコーエプソン株式会社 Light source device and projector
US10401639B2 (en) 2016-08-12 2019-09-03 Avegant Corp. Method and apparatus for an optical path length extender
US10187634B2 (en) 2016-08-12 2019-01-22 Avegant Corp. Near-eye display system including a modulation stack
CN114963114A (en) * 2017-01-27 2022-08-30 麦克赛尔株式会社 Front light device
CN110546427B (en) 2017-04-24 2022-04-29 斯坦雷电气株式会社 Lamp unit and vehicle lamp system
CN109899764A (en) * 2017-12-07 2019-06-18 斯坦雷电气株式会社 Lamp system for vehicle
JP6898214B2 (en) * 2017-12-08 2021-07-07 マクセル株式会社 Headlight device
JP7151497B2 (en) * 2019-01-17 2022-10-12 ウシオ電機株式会社 Light source device

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629253A1 (en) * 1986-08-28 1988-03-10 Docter Optic Wetzlar Gmbh Illuminating system for projection purposes
JPH0628994A (en) * 1992-07-07 1994-02-04 Insutoron Japan Kk Automatic tracking device for sem image
JP3207022B2 (en) 1992-11-24 2001-09-10 株式会社日立製作所 Light source, illumination device, and liquid crystal projection display device for projection display device
JPH10319873A (en) * 1997-05-15 1998-12-04 Mitsubishi Electric Corp Light source unit and display device, display and illumination device using it
JP3832076B2 (en) * 1998-02-16 2006-10-11 セイコーエプソン株式会社 Polarized illumination device and projection display device
JP2002048999A (en) * 2000-08-01 2002-02-15 Mitsubishi Electric Corp Condensing optical system, and projection type display device using the condensing optical system
JP3972680B2 (en) * 2001-06-21 2007-09-05 ソニー株式会社 Lighting optical unit, liquid crystal projector
KR100453040B1 (en) 2002-02-01 2004-10-15 삼성전자주식회사 Collimating lens, collimating system and image displaying apparatus employing the same
JP4258293B2 (en) * 2003-07-07 2009-04-30 株式会社日立製作所 Projection-type image display device
JP4661149B2 (en) * 2003-12-22 2011-03-30 セイコーエプソン株式会社 Lighting device and projector
US7204599B2 (en) * 2004-12-16 2007-04-17 Hewlett-Packard Development Company, L.P. Offset projection system
JP4524265B2 (en) * 2005-03-30 2010-08-11 三星電子株式会社 Illumination unit and image projection apparatus employing the same
JP2007171319A (en) 2005-12-20 2007-07-05 Samsung Electronics Co Ltd Illumination optical system, illumination unit and image projector using the optical system
JP5167873B2 (en) * 2008-03-11 2013-03-21 株式会社ニコン Projector device
JP5217823B2 (en) * 2008-09-17 2013-06-19 株式会社ニコン Projector device
US7580192B1 (en) * 2008-12-23 2009-08-25 Smart Champ Enterprise Limited Collimation lens system for LED
JP5371531B2 (en) * 2009-04-22 2013-12-18 オリンパス株式会社 Illumination device and microscope equipped with the same
CN101943845A (en) * 2009-07-07 2011-01-12 红蝶科技(深圳)有限公司 Efficient miniature projection optical engine
US8562152B2 (en) * 2009-12-24 2013-10-22 Seiko Epson Corporation Collimator lens unit with aspheric surfaces for imparting a luminous flux density distribution
US20130057786A1 (en) * 2010-05-19 2013-03-07 3M Innovative Properties Company Polarized projection illuminator
CN201796189U (en) * 2010-07-26 2011-04-13 杭州晶景光电有限公司 Optical projection system based on uniform illumination of total internal reflection lens

Also Published As

Publication number Publication date
EP2815274A2 (en) 2014-12-24
US9961314B2 (en) 2018-05-01
JP5957937B2 (en) 2016-07-27
EP2815274B1 (en) 2017-08-09
WO2013121765A3 (en) 2014-01-30
RU2014137248A (en) 2016-04-10
WO2013121765A8 (en) 2014-04-10
RU2583340C2 (en) 2016-05-10
JP2013168316A (en) 2013-08-29
TW201335692A (en) 2013-09-01
WO2013121765A2 (en) 2013-08-22
KR101723888B1 (en) 2017-04-06
CN103257519B (en) 2015-08-19
CN103257519A (en) 2013-08-21
KR20140123590A (en) 2014-10-22
US20140340588A1 (en) 2014-11-20
TWI456332B (en) 2014-10-11

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