GB1488901A - Illuminable indicator - Google Patents

Illuminable indicator

Info

Publication number
GB1488901A
GB1488901A GB907874A GB907874A GB1488901A GB 1488901 A GB1488901 A GB 1488901A GB 907874 A GB907874 A GB 907874A GB 907874 A GB907874 A GB 907874A GB 1488901 A GB1488901 A GB 1488901A
Authority
GB
United Kingdom
Prior art keywords
plateaux
light
strips
natural
reflected
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
GB907874A
Other languages
English (en)
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co Ltd
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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB907874A priority Critical patent/GB1488901A/en
Priority to FR7506334A priority patent/FR2262843B1/fr
Publication of GB1488901A publication Critical patent/GB1488901A/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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into 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
    • G02B6/0035—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
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the 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
    • G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
GB907874A 1974-02-28 1974-02-28 Illuminable indicator Expired GB1488901A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB907874A GB1488901A (en) 1974-02-28 1974-02-28 Illuminable indicator
FR7506334A FR2262843B1 (fr) 1974-02-28 1975-02-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB907874A GB1488901A (en) 1974-02-28 1974-02-28 Illuminable indicator

Publications (1)

Publication Number Publication Date
GB1488901A true GB1488901A (en) 1977-10-19

Family

ID=9864940

Family Applications (1)

Application Number Title Priority Date Filing Date
GB907874A Expired GB1488901A (en) 1974-02-28 1974-02-28 Illuminable indicator

Country Status (2)

Country Link
FR (1) FR2262843B1 (fr)
GB (1) GB1488901A (fr)

Also Published As

Publication number Publication date
FR2262843B1 (fr) 1977-04-15
FR2262843A1 (fr) 1975-09-26

Similar Documents

Publication Publication Date Title
US2623313A (en) Edge illuminated sign
US2595973A (en) Instrument panel
GB1166442A (en) Bulb-Lit Panels
ES345939A1 (es) Una disposicion combinada de instrumentos indicadores.
US3499240A (en) Illuminated grid for backlighted plotting boards
GB1194301A (en) Translucent Instrument Dial Means.
ES477819A1 (es) Dispositivo de paneles luminosos.
GB1488901A (en) Illuminable indicator
US2584253A (en) Three-dimensional sign letter
US2863240A (en) Balanced color illumination system
US1998857A (en) Illuminated sign for day and night display
GB962570A (en) Improved reflective material
GB1242523A (en) Improved illuminated number or name display device
GB1269638A (en) Improvements in advertising or display signs
GB1178999A (en) Illuminated Displays
GB582902A (en) Improvements in display signs and the like
GB414216A (en) Improvements in and relating to advertising or display apparatus for use by day and night
GB1284113A (en) Improvements relating to signs
DE68924856D1 (de) Anzeigevorrichtung mit mindestens einer durchscheinenden hinterleuchteten stirnplatte.
GB769574A (en) Improvements in signs
GB1487919A (en) Illuminable indicator panel
GB867550A (en) Improvements in or relating to illuminated display or indicating apparatus
GB406656A (en) Advertising display
JPH05264748A (ja) 掛時計
JPS5327071A (en) Electronic watch

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee