FR1580461A - - Google Patents

Info

Publication number
FR1580461A
FR1580461A FR1580461DA FR1580461A FR 1580461 A FR1580461 A FR 1580461A FR 1580461D A FR1580461D A FR 1580461DA FR 1580461 A FR1580461 A FR 1580461A
Authority
FR
France
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.)
Expired
Application number
Other languages
French (fr)
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 filed Critical
Application granted granted Critical
Publication of FR1580461A publication Critical patent/FR1580461A/fr
Expired legal-status Critical Current

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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into 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, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1580461D 1968-07-11 1968-07-11 Expired FR1580461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR158820 1968-07-11

Publications (1)

Publication Number Publication Date
FR1580461A true FR1580461A (en) 1969-09-05

Family

ID=8652421

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1580461D Expired FR1580461A (en) 1968-07-11 1968-07-11

Country Status (1)

Country Link
FR (1) FR1580461A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620795A1 (en) * 1987-09-18 1989-03-24 Courageux Claude LIGHT DIFFUSER
EP0364228A2 (en) * 1988-10-11 1990-04-18 Minnesota Mining And Manufacturing Company Light fixture
EP0399507A2 (en) * 1989-05-25 1990-11-28 Hughes Aircraft Company High-intensity red light display device
US5227773A (en) * 1989-05-25 1993-07-13 Hughes Aircraft Company High-intensity light display device
WO1995032390A1 (en) * 1994-05-20 1995-11-30 In Focus Systems, Inc. Liquid crystal display backlight
EP1640656A3 (en) * 2004-09-24 2007-02-28 Schefenacker Vision Systems Germany GmbH Light guides for lamps, expecially for vehicular lamps
EP2390714A3 (en) * 2010-05-28 2012-03-28 LG Innotek Co., Ltd. Backlight unit and display device having the same
EP2662713A1 (en) * 2012-05-07 2013-11-13 Hella KGaA Hueck & Co. Illumination device for vehicles

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010823A1 (en) * 1987-09-18 1990-09-20 Claude Courageux Light diffuser
FR2620795A1 (en) * 1987-09-18 1989-03-24 Courageux Claude LIGHT DIFFUSER
AU633845B2 (en) * 1988-10-11 1993-02-11 Minnesota Mining And Manufacturing Company Light fixture
EP0364228A3 (en) * 1988-10-11 1990-07-18 Minnesota Mining And Manufacturing Company Light fixture
EP0364228A2 (en) * 1988-10-11 1990-04-18 Minnesota Mining And Manufacturing Company Light fixture
EP0399507A2 (en) * 1989-05-25 1990-11-28 Hughes Aircraft Company High-intensity red light display device
EP0399507A3 (en) * 1989-05-25 1991-11-27 Hughes Aircraft Company High-intensity red light display device
US5227773A (en) * 1989-05-25 1993-07-13 Hughes Aircraft Company High-intensity light display device
WO1995032390A1 (en) * 1994-05-20 1995-11-30 In Focus Systems, Inc. Liquid crystal display backlight
EP1640656A3 (en) * 2004-09-24 2007-02-28 Schefenacker Vision Systems Germany GmbH Light guides for lamps, expecially for vehicular lamps
EP2390714A3 (en) * 2010-05-28 2012-03-28 LG Innotek Co., Ltd. Backlight unit and display device having the same
US8746945B2 (en) 2010-05-28 2014-06-10 Lg Innotek Co., Ltd. Backlight unit and display device having the same
EP2662713A1 (en) * 2012-05-07 2013-11-13 Hella KGaA Hueck & Co. Illumination device for vehicles

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Legal Events

Date Code Title Description
ST Notification of lapse