WO2012174132A3 - Segmented directional backlight and related methods of backlight illumination - Google Patents

Segmented directional backlight and related methods of backlight illumination Download PDF

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Publication number
WO2012174132A3
WO2012174132A3 PCT/US2012/042279 US2012042279W WO2012174132A3 WO 2012174132 A3 WO2012174132 A3 WO 2012174132A3 US 2012042279 W US2012042279 W US 2012042279W WO 2012174132 A3 WO2012174132 A3 WO 2012174132A3
Authority
WO
WIPO (PCT)
Prior art keywords
illumination
backlight
segmented
directional
segmented directional
Prior art date
Application number
PCT/US2012/042279
Other languages
French (fr)
Other versions
WO2012174132A2 (en
Inventor
Michael G. Robinson
Original Assignee
Reald Inc.
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
Priority claimed from US13/300,293 external-priority patent/US9519153B2/en
Application filed by Reald Inc. filed Critical Reald Inc.
Publication of WO2012174132A2 publication Critical patent/WO2012174132A2/en
Publication of WO2012174132A3 publication Critical patent/WO2012174132A3/en

Links

Classifications

    • 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
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0078—Side-by-side arrangements, e.g. for large area displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • G02B6/0048—Tapered light guide, e.g. wedge-shaped light guide with stepwise taper

Abstract

Backlit display systems, such as those employed with LED backlit displays, including those configured for autostereoscopic operation, may employ synchronization between the backlight and the presentation of sequential left and right eye images at a frame rate exceeding approximately 100Hz. To successfully directionally illuminate isolated frames, the disclosed principles provide for segmenting the directional illumination and introducing a phase shifted, synchronized, pulsed drive scheme for the illumination segments. Accordingly, the principles disclosed herein are directed to segmented directional illumination systems and related techniques for segmented directional backlight illumination.
PCT/US2012/042279 2011-06-13 2012-06-13 Segmented directional backlight and related methods of backlight illumination WO2012174132A2 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US201161496319P 2011-06-13 2011-06-13
US61/496,319 2011-06-13
US13/300,293 2011-11-18
US13/300,293 US9519153B2 (en) 2010-11-19 2011-11-18 Directional flat illuminators
US201261649124P 2012-05-18 2012-05-18
US61/649,124 2012-05-18

Publications (2)

Publication Number Publication Date
WO2012174132A2 WO2012174132A2 (en) 2012-12-20
WO2012174132A3 true WO2012174132A3 (en) 2013-04-25

Family

ID=47357706

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/042279 WO2012174132A2 (en) 2011-06-13 2012-06-13 Segmented directional backlight and related methods of backlight illumination

Country Status (1)

Country Link
WO (1) WO2012174132A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110058347B (en) * 2018-01-18 2020-05-12 京东方科技集团股份有限公司 Light source module and electronic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061489A (en) * 1994-10-12 2000-05-09 Sharp Kabushiki Kaisha Light source and display
KR20030064258A (en) * 2002-01-23 2003-07-31 후지쯔 디스플레이 테크놀로지스 코포레이션 Light guide plate, light source device equipped therewith and display device
US20080084519A1 (en) * 2006-10-06 2008-04-10 3M Innovative Properties Company Stereoscopic 3d liquid crystal display apparatus with scanning backlight
US20100277575A1 (en) * 2009-04-30 2010-11-04 Tetracam, Inc. Method and apparatus for providing a 3d image via a media device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6061489A (en) * 1994-10-12 2000-05-09 Sharp Kabushiki Kaisha Light source and display
KR20030064258A (en) * 2002-01-23 2003-07-31 후지쯔 디스플레이 테크놀로지스 코포레이션 Light guide plate, light source device equipped therewith and display device
US20080084519A1 (en) * 2006-10-06 2008-04-10 3M Innovative Properties Company Stereoscopic 3d liquid crystal display apparatus with scanning backlight
US20100277575A1 (en) * 2009-04-30 2010-11-04 Tetracam, Inc. Method and apparatus for providing a 3d image via a media device

Also Published As

Publication number Publication date
WO2012174132A2 (en) 2012-12-20

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