DK1107048T3 - Method and apparatus for machining by laser of light conductors, light conductors and backlight screens comprising these conductors - Google Patents

Method and apparatus for machining by laser of light conductors, light conductors and backlight screens comprising these conductors

Info

Publication number
DK1107048T3
DK1107048T3 DK00430031T DK00430031T DK1107048T3 DK 1107048 T3 DK1107048 T3 DK 1107048T3 DK 00430031 T DK00430031 T DK 00430031T DK 00430031 T DK00430031 T DK 00430031T DK 1107048 T3 DK1107048 T3 DK 1107048T3
Authority
DK
Denmark
Prior art keywords
conductors
light
machining
laser
light conductors
Prior art date
Application number
DK00430031T
Other languages
Danish (da)
Inventor
Christophe Blanc
Frederic Chazallet
Original Assignee
Phlox
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 FR9915590A external-priority patent/FR2802308B1/en
Application filed by Phlox filed Critical Phlox
Application granted granted Critical
Publication of DK1107048T3 publication Critical patent/DK1107048T3/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
    • G02B6/0035—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
    • 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
    • G02B6/0065—Manufacturing aspects; Material aspects

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Planar Illumination Modules (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Liquid Crystal (AREA)
  • Laser Beam Processing (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

The light guide consists of a panel of a material which transmits visible light, such as glass or a polymer, having one face shaped by laser beam to produce motifs with alternating depressions and projections. The depressions are in the form of grooves 5 - 50 microns deep, and the projections in the form of strips on either side, with the average size of the motifs between 100 and 400 microns.
DK00430031T 1999-12-09 2000-11-22 Method and apparatus for machining by laser of light conductors, light conductors and backlight screens comprising these conductors DK1107048T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9915590A FR2802308B1 (en) 1999-12-09 1999-12-09 LASER MACHINING METHOD AND DEVICE FOR LIGHT GUIDES, LIGHT GUIDES OBTAINED AND BACKLIGHT SCREENS INCORPORATING THESE GUIDES
US09/613,477 US6467922B1 (en) 1999-12-09 2000-07-11 Method and apparatus for laser machining light guides, light guides obtained thereby, and back-lit screens incorporating such light guides

Publications (1)

Publication Number Publication Date
DK1107048T3 true DK1107048T3 (en) 2007-04-30

Family

ID=26235180

Family Applications (1)

Application Number Title Priority Date Filing Date
DK00430031T DK1107048T3 (en) 1999-12-09 2000-11-22 Method and apparatus for machining by laser of light conductors, light conductors and backlight screens comprising these conductors

Country Status (6)

Country Link
EP (1) EP1107048B1 (en)
JP (1) JP2001228339A (en)
AT (1) ATE349027T1 (en)
DE (1) DE60032443T2 (en)
DK (1) DK1107048T3 (en)
ES (1) ES2277586T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040246697A1 (en) * 2001-10-04 2004-12-09 Tomoyoshi Yamashita Area light source and lightguide used therefor
FR2838179B1 (en) * 2002-04-05 2004-12-24 Phlox BACKLIGHT APPARATUS
KR100460790B1 (en) * 2002-05-24 2004-12-09 주식회사 엘에스텍 Back light unit having light guide panel formed discontinuous pattern
JP4079731B2 (en) * 2002-09-24 2008-04-23 日東電工株式会社 Light scattering reflector, method for producing the same, and reflective liquid crystal display device
CN102073091A (en) * 2011-02-22 2011-05-25 苏州茂立光电科技有限公司 Light guide plate, backlight module and display device thereof
CN102889512A (en) 2011-07-19 2013-01-23 精工爱普生株式会社 Illuminating device, liquid crystal display device, electronic device, and manufacturing method of light guide panel
WO2014051623A1 (en) * 2012-09-28 2014-04-03 Hewlett-Packard Development Company, L. P. Directional waveguide-based backlight for use in a multivew display screen
WO2014051624A1 (en) * 2012-09-28 2014-04-03 Hewlett-Packard Development Company, L. P. Directional waveguide-based backlight with integrated hybrid lasers for use in a multivew display screen
KR101590567B1 (en) * 2014-02-21 2016-02-18 (주)우진하이텍 Manufacture method of light guide core using 5-axis machining center
WO2020227041A1 (en) * 2019-05-08 2020-11-12 Corning Incorporated Apparatus comprising a light guide plate and methods

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4611318A (en) * 1973-02-20 1986-09-09 Discovision Associates Method and apparatus for monitoring the storage of information on a storage medium
US4912487A (en) * 1988-03-25 1990-03-27 Texas Instruments Incorporated Laser scanner using focusing acousto-optic device
JP2927392B2 (en) * 1993-12-28 1999-07-28 神栄株式会社 Manufacturing method of surface light emitter
JPH10206641A (en) * 1997-01-16 1998-08-07 Seiko Epson Corp Lighting system and liquid crystal display
JP3257457B2 (en) * 1997-07-31 2002-02-18 株式会社日立製作所 Liquid crystal display
JPH11167028A (en) * 1997-12-04 1999-06-22 Shinyei Kaisha Surface light emitter
JPH11174447A (en) * 1997-12-15 1999-07-02 Sanyo Electric Co Ltd Light guide plate, surface light source and liquid crystal display device using light guide plate
JPH11183730A (en) * 1997-12-22 1999-07-09 Sanyo Electric Co Ltd Light guide plate, surface light source using the light guide plate and liquid crystal display device
JPH11184386A (en) * 1997-12-24 1999-07-09 Seiko Instruments Inc Front light type lighting device and reflection type color display device with front light type lighting device
JP3994505B2 (en) * 1998-02-09 2007-10-24 ソニー株式会社 Lighting device
JP3932544B2 (en) * 1998-03-13 2007-06-20 オムロン株式会社 Surface light source device
FR2776811B1 (en) * 1998-03-25 2001-12-14 Christophe Blanc ILLUMINATED LIGHTING DEVICE

Also Published As

Publication number Publication date
JP2001228339A (en) 2001-08-24
DE60032443D1 (en) 2007-02-01
EP1107048A1 (en) 2001-06-13
ATE349027T1 (en) 2007-01-15
EP1107048B1 (en) 2006-12-20
ES2277586T3 (en) 2007-07-16
DE60032443T2 (en) 2007-09-27

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