FR2317719B1 - - Google Patents

Info

Publication number
FR2317719B1
FR2317719B1 FR7521630A FR7521630A FR2317719B1 FR 2317719 B1 FR2317719 B1 FR 2317719B1 FR 7521630 A FR7521630 A FR 7521630A FR 7521630 A FR7521630 A FR 7521630A FR 2317719 B1 FR2317719 B1 FR 2317719B1
Authority
FR
France
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
FR7521630A
Other languages
French (fr)
Other versions
FR2317719A1 (fr
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.)
VOLTAM SA
Original Assignee
VOLTAM SA
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 VOLTAM SA filed Critical VOLTAM SA
Priority to FR7521630A priority Critical patent/FR2317719A1/fr
Publication of FR2317719A1 publication Critical patent/FR2317719A1/fr
Application granted granted Critical
Publication of FR2317719B1 publication Critical patent/FR2317719B1/fr
Granted 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
    • G02B6/0015—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
    • G02B6/0033—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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
    • 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
    • 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)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
FR7521630A 1975-07-10 1975-07-10 Tableau pour inscriptions pouvant a volonte etre rendues lumineuses Granted FR2317719A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7521630A FR2317719A1 (fr) 1975-07-10 1975-07-10 Tableau pour inscriptions pouvant a volonte etre rendues lumineuses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7521630A FR2317719A1 (fr) 1975-07-10 1975-07-10 Tableau pour inscriptions pouvant a volonte etre rendues lumineuses

Publications (2)

Publication Number Publication Date
FR2317719A1 FR2317719A1 (fr) 1977-02-04
FR2317719B1 true FR2317719B1 (cg-RX-API-DMAC10.html) 1977-12-16

Family

ID=9157746

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7521630A Granted FR2317719A1 (fr) 1975-07-10 1975-07-10 Tableau pour inscriptions pouvant a volonte etre rendues lumineuses

Country Status (1)

Country Link
FR (1) FR2317719A1 (cg-RX-API-DMAC10.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3006457A1 (de) * 1980-02-21 1981-08-27 Patra Patent Treuhand Beleuchtungsvorrichtung fuer anzeigeanordnungen
DE3019419A1 (de) * 1980-05-21 1981-12-03 Patra Patent Treuhand Beleuchtungsvorrichtung fuer anzeigeanordnung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR417721A (fr) * 1909-05-11 1910-11-21 John Baptist Reiner Perfectionnements aux enseignes et indicateurs lumineux
FR816795A (fr) * 1936-04-20 1937-08-17 Holophane Sa Objets décoratifs lumineux
GB664193A (en) * 1949-02-26 1952-01-02 Ilford Ltd Photographic dark-room lamp
FR1268295A (fr) * 1960-09-23 1961-07-28 Procédé de production d'images et d'inscriptions lumineuses, et dispositif pour la mise en oeuvre de ce procédé

Also Published As

Publication number Publication date
FR2317719A1 (fr) 1977-02-04

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Legal Events

Date Code Title Description
ST Notification of lapse