GB2164437B - Flat light source - Google Patents

Flat light source

Info

Publication number
GB2164437B
GB2164437B GB08522278A GB8522278A GB2164437B GB 2164437 B GB2164437 B GB 2164437B GB 08522278 A GB08522278 A GB 08522278A GB 8522278 A GB8522278 A GB 8522278A GB 2164437 B GB2164437 B GB 2164437B
Authority
GB
United Kingdom
Prior art keywords
light source
flat light
flat
source
light
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
Application number
GB08522278A
Other versions
GB2164437A (en
GB8522278D0 (en
Inventor
Uri Gal
Jacob Golan
Martin Prester
Shlomo Berliner
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.)
Motorola Solutions Israel Ltd
Original Assignee
Motorola Israel 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 Motorola Israel Ltd filed Critical Motorola Israel Ltd
Publication of GB8522278D0 publication Critical patent/GB8522278D0/en
Publication of GB2164437A publication Critical patent/GB2164437A/en
Application granted granted Critical
Publication of GB2164437B publication Critical patent/GB2164437B/en
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/18—Mechanisms for rendering the print visible to the operator
    • B41J29/19—Mechanisms for rendering the print visible to the operator with reflectors or illuminating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • 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
    • G02B6/0018—Redirecting means 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
    • G02B6/0013—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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/18—Edge-illuminated signs
    • G09F2013/1804—Achieving homogeneous illumination
    • G09F2013/1831—Achieving homogeneous illumination using more than one light source
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/056—Diffuser; Uneven surface
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/064—Optical isolation of switch sites

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Planar Illumination Modules (AREA)
GB08522278A 1984-09-15 1985-09-09 Flat light source Expired GB2164437B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848423357A GB8423357D0 (en) 1984-09-15 1984-09-15 Flat light source

Publications (3)

Publication Number Publication Date
GB8522278D0 GB8522278D0 (en) 1985-10-16
GB2164437A GB2164437A (en) 1986-03-19
GB2164437B true GB2164437B (en) 1988-06-29

Family

ID=10566769

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848423357A Pending GB8423357D0 (en) 1984-09-15 1984-09-15 Flat light source
GB08522278A Expired GB2164437B (en) 1984-09-15 1985-09-09 Flat light source

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848423357A Pending GB8423357D0 (en) 1984-09-15 1984-09-15 Flat light source

Country Status (2)

Country Link
GB (2) GB8423357D0 (en)
IL (1) IL76292A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3914448A1 (en) * 1989-05-02 1990-11-08 Wustlich Elektr Bauteile ARRANGEMENT FOR ILLUMINATING BACKGROUND AREAS
JPH0749442Y2 (en) * 1990-04-27 1995-11-13 三菱レイヨン株式会社 Fiber optic connector
JP2005518085A (en) * 2002-02-22 2005-06-16 ルミレス ライティング ザ ネザーランズ ベー ヴェー Compact lighting system and display device
DE102006009694A1 (en) * 2006-03-02 2007-09-20 Paul Heinrich Neuhorst Light has multiple LEDs as source of light, disk is provided in which multiple through-openings and LEDs are located in through-openings on common printed circuit board
CN104704290A (en) * 2012-10-11 2015-06-10 皇家飞利浦有限公司 Thin and efficient light guide system
DE102021131390A1 (en) 2021-11-30 2023-06-01 Ambright GmbH LIGHTING DEVICE

Also Published As

Publication number Publication date
GB8423357D0 (en) 1984-11-07
GB2164437A (en) 1986-03-19
IL76292A (en) 1989-01-31
GB8522278D0 (en) 1985-10-16

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Legal Events

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