CH676877A5 - - Google Patents

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Publication number
CH676877A5
CH676877A5 CH344288A CH344288A CH676877A5 CH 676877 A5 CH676877 A5 CH 676877A5 CH 344288 A CH344288 A CH 344288A CH 344288 A CH344288 A CH 344288A CH 676877 A5 CH676877 A5 CH 676877A5
Authority
CH
Switzerland
Prior art keywords
light
transparent support
face
main face
edge
Prior art date
Application number
CH344288A
Other languages
English (en)
French (fr)
Inventor
Claude Courageux
Original Assignee
Claude Courageux
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 Claude Courageux filed Critical Claude Courageux
Publication of CH676877A5 publication Critical patent/CH676877A5/fr

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
    • 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
    • G02B6/0033—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
    • G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
    • 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
    • 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
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • 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
    • G09F2013/1809—Achieving homogeneous illumination using a non-homogeneous front window
    • G09F2013/1813—Achieving homogeneous illumination using a non-homogeneous front window provided with a coating showing a pattern of dots of variable density

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)
CH344288A 1987-09-18 1988-09-15 CH676877A5 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8712969A FR2620795B1 (fr) 1987-09-18 1987-09-18 Diffuseur de lumiere

Publications (1)

Publication Number Publication Date
CH676877A5 true CH676877A5 (enrdf_load_stackoverflow) 1991-03-15

Family

ID=9355046

Family Applications (1)

Application Number Title Priority Date Filing Date
CH344288A CH676877A5 (enrdf_load_stackoverflow) 1987-09-18 1988-09-15

Country Status (3)

Country Link
CH (1) CH676877A5 (enrdf_load_stackoverflow)
FR (1) FR2620795B1 (enrdf_load_stackoverflow)
WO (1) WO1990010823A1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3914448A1 (de) * 1989-05-02 1990-11-08 Wustlich Elektr Bauteile Anordnung zur ausleuchtung von hintergrundflaechen
US5667289A (en) * 1989-05-18 1997-09-16 Seiko Epson Corporation Background lighting apparatus for liquid crystal display
JP2920785B2 (ja) * 1990-09-20 1999-07-19 イルミネーション リサーチ グループ（プロパティーズ）プロプリアタリー リミテッド 表示システム
US5450292A (en) * 1992-03-16 1995-09-12 Enplas Corporation Surface light source device
WO1994001795A1 (en) 1992-07-13 1994-01-20 Seiko Epson Corporation Surface illumination device and liquid crystal display
FR2694069B1 (fr) * 1992-07-27 1994-11-04 Francois Parmentier Dispositif d'éclairage réparti.
AU4263793A (en) * 1993-04-22 1994-11-08 Francois Parmentier Distributed lighting device
US6612729B1 (en) * 2000-03-16 2003-09-02 3M Innovative Properties Company Illumination device
KR100793536B1 (ko) 2006-07-04 2008-01-14 삼성에스디아이 주식회사 액정 표시 장치의 백라이트 유니트 및 백라이트 유니트의도광판 제조 방법
ITAN20090089A1 (it) * 2009-11-11 2011-05-12 Adriano Cardinali Pannello luminoso.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2223409A (en) * 1939-03-17 1940-12-03 Louis J Dixon Edge lighted sign
GB664193A (en) * 1949-02-26 1952-01-02 Ilford Ltd Photographic dark-room lamp
DE834837C (de) * 1950-11-18 1952-03-24 Preh Elektro Feinmechanik Beleuchtungseinrichtung mit Flutlichtstab fuer mehrere zusammengehoerende Einzelobjekte
GB948379A (en) * 1960-04-08 1964-02-05 Gen Electric Improvements in light distribution system
FR1580461A (enrdf_load_stackoverflow) * 1968-07-11 1969-09-05
GB2168519A (en) * 1984-12-12 1986-06-18 Globetech Ltd Display device
JPS6229003A (ja) * 1985-07-30 1987-02-07 株式会社トキメック 背面反射式光拡散装置
GB2196100B (en) * 1986-10-01 1990-07-04 Mitsubishi Rayon Co Light diffusing device
DK21487D0 (da) * 1987-01-15 1987-01-15 Nils Toft Pladeformet lysleder

Also Published As

Publication number Publication date
FR2620795B1 (fr) 1992-02-28
WO1990010823A1 (fr) 1990-09-20
FR2620795A1 (fr) 1989-03-24

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Legal Events

Date Code Title Description
PL Patent ceased