GB1495130A - Illuminated dial indicators - Google Patents

Illuminated dial indicators

Info

Publication number
GB1495130A
GB1495130A GB2330476A GB2330476A GB1495130A GB 1495130 A GB1495130 A GB 1495130A GB 2330476 A GB2330476 A GB 2330476A GB 2330476 A GB2330476 A GB 2330476A GB 1495130 A GB1495130 A GB 1495130A
Authority
GB
United Kingdom
Prior art keywords
dial
bulb holder
index finger
holder
slit
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
GB2330476A
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
Priority to GB2330476A priority Critical patent/GB1495130A/en
Publication of GB1495130A publication Critical patent/GB1495130A/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
    • 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
    • G02B6/002—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 by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—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 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/28—Structurally-combined illuminating devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Structure Of Receivers (AREA)

Abstract

1495130 Dial illumination AKATOH 4 June 1976 23304/76 Heading F4R [Also in Divisions H3 and G1] An indicator dial, e.g. for audio equipment or radio receivers, comprises a single bulb holder 3 which is arranged to transmit light into the edge of a dial plate 1 to illuminate markings thereon and also to transmit a beam L in front of the plate where it is intercepted and deflected into the eye by a movable index finger 6 having a 45 degree reflecting plane 7. As shown, the dial has an offset end portion where the bulb holder is provided. The bulb holder has a slit 5 to produce the beam L. In another arrangement, the slit is on the side of the holder remote from the dial and light is reflected back towards the index finger by a plane mirror (18) (Fig. 3, not shown) mounted on a casing of the equipment. The dial has an opaque rear surface of metal, paper or synthetic resin and the bulb holder has an internal or external reflective surface. The transparent part of the dial and the prismatic index finger are of acrylic resin.
GB2330476A 1976-06-04 1976-06-04 Illuminated dial indicators Expired GB1495130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2330476A GB1495130A (en) 1976-06-04 1976-06-04 Illuminated dial indicators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2330476A GB1495130A (en) 1976-06-04 1976-06-04 Illuminated dial indicators

Publications (1)

Publication Number Publication Date
GB1495130A true GB1495130A (en) 1977-12-14

Family

ID=10193454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2330476A Expired GB1495130A (en) 1976-06-04 1976-06-04 Illuminated dial indicators

Country Status (1)

Country Link
GB (1) GB1495130A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492602A1 (en) * 1980-10-17 1982-04-23 Bosch Siemens Hausgeraete ELECTRICALLY EQUIPMENT WITH DISPLAY PANEL AND LIGHT CONTROL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492602A1 (en) * 1980-10-17 1982-04-23 Bosch Siemens Hausgeraete ELECTRICALLY EQUIPMENT WITH DISPLAY PANEL AND LIGHT CONTROL

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee