DE3682264D1 - Lichtplatte. - Google Patents

Lichtplatte.

Info

Publication number
DE3682264D1
DE3682264D1 DE8686100956T DE3682264T DE3682264D1 DE 3682264 D1 DE3682264 D1 DE 3682264D1 DE 8686100956 T DE8686100956 T DE 8686100956T DE 3682264 T DE3682264 T DE 3682264T DE 3682264 D1 DE3682264 D1 DE 3682264D1
Authority
DE
Germany
Prior art keywords
face
wedge
light
incidence
angle
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 - Lifetime
Application number
DE8686100956T
Other languages
English (en)
Inventor
Vinther Franz Johnsen
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE3682264D1 publication Critical patent/DE3682264D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G02B6/0023—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
    • G02B6/0031—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
    • G02B6/0033—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
    • 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
    • G09F2013/1827—Prismatic window

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
DE8686100956T 1986-01-24 1986-01-24 Lichtplatte. Expired - Lifetime DE3682264D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86100956A EP0229863B1 (de) 1986-01-24 1986-01-24 Lichtplatte

Publications (1)

Publication Number Publication Date
DE3682264D1 true DE3682264D1 (de) 1991-12-05

Family

ID=8194856

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686100956T Expired - Lifetime DE3682264D1 (de) 1986-01-24 1986-01-24 Lichtplatte.

Country Status (3)

Country Link
EP (1) EP0229863B1 (de)
AT (1) ATE69114T1 (de)
DE (1) DE3682264D1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9000867U1 (de) * 1990-01-26 1991-03-07 Marketing-Displays Produktionsgesellschaft Fuer Werbe- Und Verkaufsfoerderungssysteme Mbh, 5000 Koeln Leuchtbox
US5101325A (en) * 1990-03-20 1992-03-31 General Electric Company Uniform illumination of large, thin surfaces particularly suited for automotive applications
JPH0782302B2 (ja) * 1990-11-14 1995-09-06 株式会社竹中工務店 表示照明器具
DE4037076C1 (en) * 1990-11-22 1992-04-02 Dambach-Werke Gmbh, 7560 Gaggenau, De Lightweight lighting box giving uniform beam - including transparent, wedge-shaped reflecting member directed towards illuminating member, etc.
TW393582B (en) * 1995-12-05 2000-06-11 Matsushita Electric Ind Co Ltd Backlighting device and color display device
DE19860695B4 (de) * 1998-12-29 2011-04-28 Siemens Ag Lichtquellenelement mit schräggestellter Lichtaustrittsfläche

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1130601A (en) * 1965-04-30 1968-10-16 Calorific Appliances Ltd Illuminated display apparatus
GB1162560A (en) * 1966-11-15 1969-08-27 Wharton Engs Elstree Ltd Drawing and the like Boards
US4059916A (en) * 1975-01-30 1977-11-29 Copal Company Limited Light diffusing device
JPS61119U (ja) * 1984-06-07 1986-01-06 株式会社 ワコム 透視装置

Also Published As

Publication number Publication date
ATE69114T1 (de) 1991-11-15
EP0229863B1 (de) 1991-10-30
EP0229863A1 (de) 1987-07-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee