GB2476752B - Light guide and illumination assembly incorporating the same - Google Patents

Light guide and illumination assembly incorporating the same

Info

Publication number
GB2476752B
GB2476752B GB1105934.2A GB201105934A GB2476752B GB 2476752 B GB2476752 B GB 2476752B GB 201105934 A GB201105934 A GB 201105934A GB 2476752 B GB2476752 B GB 2476752B
Authority
GB
United Kingdom
Prior art keywords
same
light guide
illumination assembly
assembly incorporating
incorporating
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.)
Expired - Fee Related
Application number
GB1105934.2A
Other versions
GB201105934D0 (en
GB2476752A (en
Inventor
Robert James Neil Mclean
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.)
Buehler UK Ltd
Original Assignee
Buhler Sortex Ltd
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 Buhler Sortex Ltd filed Critical Buhler Sortex Ltd
Priority to GB1105934.2A priority Critical patent/GB2476752B/en
Priority claimed from GB0819068.8A external-priority patent/GB2464508B/en
Publication of GB201105934D0 publication Critical patent/GB201105934D0/en
Publication of GB2476752A publication Critical patent/GB2476752A/en
Application granted granted Critical
Publication of GB2476752B publication Critical patent/GB2476752B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G02B6/0096—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the lights guides being of the hollow type
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
    • 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
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • 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
    • G02B6/0051—Diffusing 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
    • G02B6/005—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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/007—Incandescent lamp or gas discharge lamp
    • G02B6/0071—Incandescent lamp or gas discharge lamp with elongated shape, e.g. tube

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB1105934.2A 2008-10-17 2008-10-17 Light guide and illumination assembly incorporating the same Expired - Fee Related GB2476752B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1105934.2A GB2476752B (en) 2008-10-17 2008-10-17 Light guide and illumination assembly incorporating the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0819068.8A GB2464508B (en) 2008-10-17 2008-10-17 Light guide and illumination assembly incorporating the same
GB1105934.2A GB2476752B (en) 2008-10-17 2008-10-17 Light guide and illumination assembly incorporating the same

Publications (3)

Publication Number Publication Date
GB201105934D0 GB201105934D0 (en) 2011-05-18
GB2476752A GB2476752A (en) 2011-07-06
GB2476752B true GB2476752B (en) 2013-07-10

Family

ID=44072134

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1105934.2A Expired - Fee Related GB2476752B (en) 2008-10-17 2008-10-17 Light guide and illumination assembly incorporating the same

Country Status (1)

Country Link
GB (1) GB2476752B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1062627A (en) * 1996-08-23 1998-03-06 Casio Comput Co Ltd Illumination light adjusting structure for display part, and display device using it
US6011929A (en) * 1996-07-29 2000-01-04 West Electric Co., Ltd. Flash apparatus capable of varying emission angle
US20040001345A1 (en) * 2002-06-29 2004-01-01 Lee Sang-Duk Illuminating apparatus, backlight assembly and liquid crystal display device having the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6011929A (en) * 1996-07-29 2000-01-04 West Electric Co., Ltd. Flash apparatus capable of varying emission angle
JPH1062627A (en) * 1996-08-23 1998-03-06 Casio Comput Co Ltd Illumination light adjusting structure for display part, and display device using it
US20040001345A1 (en) * 2002-06-29 2004-01-01 Lee Sang-Duk Illuminating apparatus, backlight assembly and liquid crystal display device having the same

Also Published As

Publication number Publication date
GB201105934D0 (en) 2011-05-18
GB2476752A (en) 2011-07-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20191017