FR77842E - Illuminated indicator plate - Google Patents

Illuminated indicator plate

Info

Publication number
FR77842E
FR77842E FR829326A FR829326A FR77842E FR 77842 E FR77842 E FR 77842E FR 829326 A FR829326 A FR 829326A FR 829326 A FR829326 A FR 829326A FR 77842 E FR77842 E FR 77842E
Authority
FR
France
Prior art keywords
indicator plate
illuminated indicator
illuminated
plate
indicator
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
FR829326A
Other languages
French (fr)
Inventor
Pierre Emile Langlois
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 filed Critical
Priority to FR829326A priority Critical patent/FR77842E/en
Application granted granted Critical
Publication of FR77842E publication Critical patent/FR77842E/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
    • G02B6/0033—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
    • 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
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0093—Means for protecting the light guide

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR829326A 1960-06-08 1960-06-08 Illuminated indicator plate Expired FR77842E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR829326A FR77842E (en) 1960-06-08 1960-06-08 Illuminated indicator plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR829326A FR77842E (en) 1960-06-08 1960-06-08 Illuminated indicator plate

Publications (1)

Publication Number Publication Date
FR77842E true FR77842E (en) 1962-04-27

Family

ID=8732937

Family Applications (1)

Application Number Title Priority Date Filing Date
FR829326A Expired FR77842E (en) 1960-06-08 1960-06-08 Illuminated indicator plate

Country Status (1)

Country Link
FR (1) FR77842E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389247A (en) * 1964-07-01 1968-06-18 Fay E. Null Pendulum light source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389247A (en) * 1964-07-01 1968-06-18 Fay E. Null Pendulum light source

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