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GB2450664A - Intensity distribution of incident light flux - Google Patents

Intensity distribution of incident light flux Download PDF

Info

Publication number
GB2450664A
GB2450664A GB0819462A GB0819462A GB2450664A GB 2450664 A GB2450664 A GB 2450664A GB 0819462 A GB0819462 A GB 0819462A GB 0819462 A GB0819462 A GB 0819462A GB 2450664 A GB2450664 A GB 2450664A
Authority
GB
United Kingdom
Prior art keywords
control
intensity distribution
incident light
symmetrical
image display
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.)
Withdrawn
Application number
GB0819462A
Other versions
GB0819462D0 (en
Inventor
Fusao Ishii
Yoshihiro Maeda
Hirotoshi Ichikawa
Kazuma Arai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Silicon Quest KK
Original Assignee
Olympus Corp
Silicon Quest KK
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 Olympus Corp, Silicon Quest KK filed Critical Olympus Corp
Publication of GB0819462D0 publication Critical patent/GB0819462D0/en
Publication of GB2450664A publication Critical patent/GB2450664A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H04N9/3155—Modulator illumination systems for controlling the light source
    • 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
    • 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
    • H04N9/3152—Modulator illumination systems for shaping the light beam

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Additional control flexibilities to generate more gray scales for an image display system is achieved by controlling the intensity distribution of the light projection from a light source to a deflecting mirror to further coordinate with the control of the intermediate states of the deflecting mirror. The control light source intensity distribution can provide incident light with wide varieties of intensity distributions including non-uniform, symmetrical and non-symmetrical, different distributions of polarizations, various cross sectional shapes of the incident lights and other combinations of all of the above variations. More stable and better control of gray scale control is also achieved by optimizing the intensity distributions of the incident light to produce the best visual effects of the image display.
GB0819462A 2006-03-26 2008-10-23 Intensity distribution of incident light flux Withdrawn GB2450664A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78625606P 2006-03-26 2006-03-26
PCT/IB2007/002537 WO2008007219A2 (en) 2006-03-26 2007-03-26 Intensity distribution of incident light flux

Publications (2)

Publication Number Publication Date
GB0819462D0 GB0819462D0 (en) 2008-12-03
GB2450664A true GB2450664A (en) 2008-12-31

Family

ID=38923600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0819462A Withdrawn GB2450664A (en) 2006-03-26 2008-10-23 Intensity distribution of incident light flux

Country Status (4)

Country Link
JP (1) JP2009531731A (en)
CN (1) CN101473643A (en)
GB (1) GB2450664A (en)
WO (1) WO2008007219A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103307997B (en) * 2012-03-09 2016-12-14 上海微电子装备有限公司 A kind of angular resolution scatterometry device and measuring method thereof
JP6155684B2 (en) * 2013-02-15 2017-07-05 セイコーエプソン株式会社 Lighting device and projector
JP2014164175A (en) * 2013-02-26 2014-09-08 Seiko Epson Corp Illumination device and projector
CN104320187A (en) * 2014-09-15 2015-01-28 北京理工大学 Communication emission system packaged based on micro-lens array for homogenizing illumination of LED (Light Emitting Diode)
CN106842776B (en) * 2017-04-04 2022-05-13 吴卫军 Diameter-variable light beam tube
CN111736162B (en) * 2020-08-04 2020-11-10 中国人民解放军国防科技大学 Laser illumination echo detection device and method for complex target

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5287096A (en) * 1989-02-27 1994-02-15 Texas Instruments Incorporated Variable luminosity display system
US5442414A (en) * 1994-05-10 1995-08-15 U. S. Philips Corporation High contrast illumination system for video projector
EP0771121A2 (en) * 1995-10-27 1997-05-02 Daewoo Electronics Co., Ltd Light projection method and a projection type image display apparatus for performing the same
US6224216B1 (en) * 2000-02-18 2001-05-01 Infocus Corporation System and method employing LED light sources for a projection display
US20030128000A1 (en) * 2002-01-10 2003-07-10 Nec Viewtechnology, Ltd. Display system
US20030133080A1 (en) * 2001-12-21 2003-07-17 Nec Viewtechnology. Ltd. LED-illumination-type DMD projector and optical system thereof
US20030189693A1 (en) * 2001-06-08 2003-10-09 Hirohisa Ishino Lighting device and projection type image display device
EP1432245A1 (en) * 2002-12-20 2004-06-23 Texas Instruments Incorporated Adaptive Illumination Modulator
US20050140933A1 (en) * 2003-12-30 2005-06-30 Cannon Bruce L. Contrast and brightness enhancing apertures for illumination displays
US20050162737A1 (en) * 2002-03-13 2005-07-28 Whitehead Lorne A. High dynamic range display devices
US20050254116A1 (en) * 2003-11-01 2005-11-17 Silicon Quest Kabushiki-Kaisha Sequence and timing control of writing and rewriting pixel memories for achieving higher number of gray scales

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5287096A (en) * 1989-02-27 1994-02-15 Texas Instruments Incorporated Variable luminosity display system
US5442414A (en) * 1994-05-10 1995-08-15 U. S. Philips Corporation High contrast illumination system for video projector
EP0771121A2 (en) * 1995-10-27 1997-05-02 Daewoo Electronics Co., Ltd Light projection method and a projection type image display apparatus for performing the same
US6224216B1 (en) * 2000-02-18 2001-05-01 Infocus Corporation System and method employing LED light sources for a projection display
US20030189693A1 (en) * 2001-06-08 2003-10-09 Hirohisa Ishino Lighting device and projection type image display device
US20030133080A1 (en) * 2001-12-21 2003-07-17 Nec Viewtechnology. Ltd. LED-illumination-type DMD projector and optical system thereof
US20030128000A1 (en) * 2002-01-10 2003-07-10 Nec Viewtechnology, Ltd. Display system
US20050162737A1 (en) * 2002-03-13 2005-07-28 Whitehead Lorne A. High dynamic range display devices
EP1432245A1 (en) * 2002-12-20 2004-06-23 Texas Instruments Incorporated Adaptive Illumination Modulator
US20050254116A1 (en) * 2003-11-01 2005-11-17 Silicon Quest Kabushiki-Kaisha Sequence and timing control of writing and rewriting pixel memories for achieving higher number of gray scales
US20050140933A1 (en) * 2003-12-30 2005-06-30 Cannon Bruce L. Contrast and brightness enhancing apertures for illumination displays

Also Published As

Publication number Publication date
GB0819462D0 (en) 2008-12-03
WO2008007219A3 (en) 2008-09-04
CN101473643A (en) 2009-07-01
JP2009531731A (en) 2009-09-03
WO2008007219A2 (en) 2008-01-17

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)