WO2007145973A3 - Display apparatus with optical cavities - Google Patents

Display apparatus with optical cavities Download PDF

Info

Publication number
WO2007145973A3
WO2007145973A3 PCT/US2007/013281 US2007013281W WO2007145973A3 WO 2007145973 A3 WO2007145973 A3 WO 2007145973A3 US 2007013281 W US2007013281 W US 2007013281W WO 2007145973 A3 WO2007145973 A3 WO 2007145973A3
Authority
WO
WIPO (PCT)
Prior art keywords
display apparatus
optical cavities
light guide
display plane
light
Prior art date
Application number
PCT/US2007/013281
Other languages
French (fr)
Other versions
WO2007145973A2 (en
WO2007145973A8 (en
Inventor
Jignesh Gandhi
Nesbitt W Hagood
Roger W Barton
Original Assignee
Pixtronix Inc
Jignesh Gandhi
Nesbitt W Hagood
Roger W Barton
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 Pixtronix Inc, Jignesh Gandhi, Nesbitt W Hagood, Roger W Barton filed Critical Pixtronix Inc
Priority to CN2007800207471A priority Critical patent/CN101460876B/en
Priority to JP2009514344A priority patent/JP2009540503A/en
Priority to EP07809343A priority patent/EP2030056A2/en
Publication of WO2007145973A2 publication Critical patent/WO2007145973A2/en
Publication of WO2007145973A3 publication Critical patent/WO2007145973A3/en
Publication of WO2007145973A8 publication Critical patent/WO2007145973A8/en

Links

Classifications

    • 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
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • 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
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • 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
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • 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
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer

Abstract

A display 1201 includes an array of light modulators 1208 that define a display plane, a light guide 1204 and front- and rear-facing reflective surfaces. The light guide 1204 includes a plurality of geometric light redirectors 1206, and at least 50% of the light guide's rear surface is parallel to the display plane. The rear-facing reflective surface is parallel to the display plane and includes a plurality of apertures.
PCT/US2007/013281 2006-06-05 2007-06-05 Display apparatus with optical cavities WO2007145973A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2007800207471A CN101460876B (en) 2006-06-05 2007-06-05 Display apparatus with optical cavities
JP2009514344A JP2009540503A (en) 2006-06-05 2007-06-05 Display device having optical cavity
EP07809343A EP2030056A2 (en) 2006-06-05 2007-06-05 Display apparatus with optical cavities

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US81105406P 2006-06-05 2006-06-05
US60/811,054 2006-06-05
US84024906P 2006-08-25 2006-08-25
US60/840,249 2006-08-25
US11/528,191 2006-09-26
US11/528,191 US7876489B2 (en) 2006-06-05 2006-09-26 Display apparatus with optical cavities

Publications (3)

Publication Number Publication Date
WO2007145973A2 WO2007145973A2 (en) 2007-12-21
WO2007145973A3 true WO2007145973A3 (en) 2008-02-28
WO2007145973A8 WO2007145973A8 (en) 2008-05-08

Family

ID=38719097

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/013281 WO2007145973A2 (en) 2006-06-05 2007-06-05 Display apparatus with optical cavities

Country Status (5)

Country Link
US (1) US7876489B2 (en)
EP (1) EP2030056A2 (en)
JP (1) JP2009540503A (en)
CN (2) CN101460876B (en)
WO (1) WO2007145973A2 (en)

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US20070279727A1 (en) 2007-12-06
WO2007145973A2 (en) 2007-12-21
JP2009540503A (en) 2009-11-19
EP2030056A2 (en) 2009-03-04
WO2007145973A8 (en) 2008-05-08
CN101460876A (en) 2009-06-17
CN103698837B (en) 2015-12-23
US7876489B2 (en) 2011-01-25
CN103698837A (en) 2014-04-02

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