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FR587766A - Signalisatrice plate in daylight and night use for automobiles, the names of the streets, etc. - Google Patents

Signalisatrice plate in daylight and night use for automobiles, the names of the streets, etc.

Info

Publication number
FR587766A
FR587766A FR587766DA FR587766A FR 587766 A FR587766 A FR 587766A FR 587766D A FR587766D A FR 587766DA FR 587766 A FR587766 A FR 587766A
Authority
FR
Grant status
Grant
Patent type
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
Other languages
French (fr)
Inventor
Emmanuel Portal
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
Grant date

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015Means 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
    • G02B6/002Means 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015Means 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
    • G02B6/002Means 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
    • G02B6/0021Means 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means 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
    • G02B6/0038Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033Means for improving the coupling-out of light from the light guide
    • G02B6/0035Means 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
    • G02B6/0045Means 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
    • G02B6/0046Tapered light guide, e.g. wedge-shaped light guide
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B6/00Light guides
    • G02B6/0001Light guides specially adapted for lighting devices or systems
    • G02B6/0011Light guides specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066Light guides 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
    • G02B6/0068Arrangements of plural sources, e.g. multi-colour light sources
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/04Signs, boards or panels, illuminated from behind the insignia
    • G09F13/14Arrangements of reflectors therein
FR587766A 1924-10-21 1924-10-21 Signalisatrice plate in daylight and night use for automobiles, the names of the streets, etc. Expired FR587766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR587766T 1924-10-21

Publications (1)

Publication Number Publication Date
FR587766A true FR587766A (en) 1925-04-24

Family

ID=8961615

Family Applications (1)

Application Number Title Priority Date Filing Date
FR587766A Expired FR587766A (en) 1924-10-21 1924-10-21 Signalisatrice plate in daylight and night use for automobiles, the names of the streets, etc.

Country Status (1)

Country Link
FR (1) FR587766A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561885A (en) * 1945-05-31 1951-07-24 Gen Electric Illuminated dial
US4486077A (en) * 1982-02-22 1984-12-04 Davtron, Inc. Digital meter with uniform illumination and less inadvertent setting
US5130898A (en) * 1989-05-18 1992-07-14 Seiko Epson Corporation Background lighting apparatus for liquid crystal display
US5667289A (en) * 1989-05-18 1997-09-16 Seiko Epson Corporation Background lighting apparatus for liquid crystal display
US5949505A (en) * 1992-07-13 1999-09-07 Seiko Epson Corporation Surface-type illumination device and liquid crystal display

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561885A (en) * 1945-05-31 1951-07-24 Gen Electric Illuminated dial
US4486077A (en) * 1982-02-22 1984-12-04 Davtron, Inc. Digital meter with uniform illumination and less inadvertent setting
US5130898A (en) * 1989-05-18 1992-07-14 Seiko Epson Corporation Background lighting apparatus for liquid crystal display
US5667289A (en) * 1989-05-18 1997-09-16 Seiko Epson Corporation Background lighting apparatus for liquid crystal display
US5931555A (en) * 1989-05-18 1999-08-03 Seiko Epson Corporation Background lighting apparatus for liquid crystal display
US5949505A (en) * 1992-07-13 1999-09-07 Seiko Epson Corporation Surface-type illumination device and liquid crystal display
US6108060A (en) * 1992-07-13 2000-08-22 Seiko Epson Corporation Surface-type illumination device and liquid crystal display

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