GB8401723D0 - Illumination equipment - Google Patents

Illumination equipment

Info

Publication number
GB8401723D0
GB8401723D0 GB848401723A GB8401723A GB8401723D0 GB 8401723 D0 GB8401723 D0 GB 8401723D0 GB 848401723 A GB848401723 A GB 848401723A GB 8401723 A GB8401723 A GB 8401723A GB 8401723 D0 GB8401723 D0 GB 8401723D0
Authority
GB
United Kingdom
Prior art keywords
illumination equipment
illumination
equipment
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.)
Granted
Application number
GB848401723A
Other versions
GB2135806B (en
GB2135806A (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.)
Borg Instruments AG
Original Assignee
Borg Instruments AG
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 Borg Instruments AG filed Critical Borg Instruments AG
Publication of GB8401723D0 publication Critical patent/GB8401723D0/en
Publication of GB2135806A publication Critical patent/GB2135806A/en
Application granted granted Critical
Publication of GB2135806B publication Critical patent/GB2135806B/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
    • G02B6/0018—Redirecting means on the surface of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • 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
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133616—Front illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133626—Illuminating devices providing two modes of illumination, e.g. day-night
GB08401723A 1983-01-22 1984-01-23 Illumination equipment for a passive display Expired GB2135806B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3302157A DE3302157A1 (en) 1983-01-22 1983-01-22 LIGHTING DEVICE FOR A REFLECTIVELY OPERATING PASSIVE DISPLAY

Publications (3)

Publication Number Publication Date
GB8401723D0 true GB8401723D0 (en) 1984-02-22
GB2135806A GB2135806A (en) 1984-09-05
GB2135806B GB2135806B (en) 1986-06-18

Family

ID=6189005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08401723A Expired GB2135806B (en) 1983-01-22 1984-01-23 Illumination equipment for a passive display

Country Status (4)

Country Link
DE (1) DE3302157A1 (en)
FR (1) FR2539901A3 (en)
GB (1) GB2135806B (en)
IT (1) IT1173062B (en)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB607922A (en) * 1946-03-28 1948-09-07 Eralite Mfg Company Ltd Improvements in lighting fittings
GB674238A (en) * 1949-05-10 1952-06-18 Priestley Studios Ltd Improvements in or relating to advertising or display devices
GB847972A (en) * 1958-01-22 1960-09-14 K G M Electronics Ltd Improvements in or relating to indicator means
GB1092203A (en) * 1964-04-09 1967-11-22 Eastman Kodak Co Display units
US3349511A (en) * 1964-08-12 1967-10-31 Leonard S Aronoff Illuminated sign
DE2024100A1 (en) * 1970-05-16 1971-11-25 Imp Gmbh Radio Fernsehen Phone Floodlight scale with a flat, cuboid light guide and with a recess to accommodate a lamp at one end
IT1110243B (en) * 1978-02-17 1985-12-23 Absil Jean LUMINOUS PANEL DEVICE
DE2849919A1 (en) * 1978-11-17 1980-05-29 Ackeret Design & Eng Seven-segment digital display - has light-guide with prismatic total-reflection edge to reduce material content
US4250575A (en) * 1979-07-11 1981-02-10 Timex Corporation Illuminator for analog timepiece dial
JPS5622468A (en) * 1979-08-01 1981-03-03 Nissan Motor Liquid crystal display unit
DE3102626A1 (en) * 1981-01-27 1982-08-19 Siemens AG, 1000 Berlin und 8000 München "PASSIVE ELECTROOPTICAL DISPLAY DEVICE"
DE8208245U1 (en) * 1982-03-23 1982-09-23 Siemens AG, 1000 Berlin und 8000 München PASSIVE ELECTRO-OPTICAL DISPLAY DEVICE, IN PARTICULAR LIQUID CRYSTAL DISPLAY, WITH A PLATE-SHAPED LIGHT GUIDE

Also Published As

Publication number Publication date
IT8419211A0 (en) 1984-01-18
FR2539901A3 (en) 1984-07-27
DE3302157C3 (en) 1991-07-18
GB2135806B (en) 1986-06-18
DE3302157A1 (en) 1984-07-26
FR2539901B3 (en) 1984-12-21
GB2135806A (en) 1984-09-05
IT1173062B (en) 1987-06-18
DE3302157C2 (en) 1987-05-14

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Legal Events

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

Effective date: 19940123