IT1173062B - Dispositivo di illuminazione per un indicatore passivo funzionante a riflessione - Google Patents
Dispositivo di illuminazione per un indicatore passivo funzionante a riflessioneInfo
- Publication number
- IT1173062B IT1173062B IT19211/84A IT1921184A IT1173062B IT 1173062 B IT1173062 B IT 1173062B IT 19211/84 A IT19211/84 A IT 19211/84A IT 1921184 A IT1921184 A IT 1921184A IT 1173062 B IT1173062 B IT 1173062B
- Authority
- IT
- Italy
- Prior art keywords
- lighting device
- operating indicator
- passive reflective
- reflective operating
- passive
- Prior art date
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Planar Illumination Modules (AREA)
- Details Of Measuring Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3302157A DE3302157C2 (de) | 1983-01-22 | 1983-01-22 | Beleuchtungseinrichtung für eine reflexiv betriebene passive Anzeige |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8419211A0 IT8419211A0 (it) | 1984-01-18 |
IT1173062B true IT1173062B (it) | 1987-06-18 |
Family
ID=6189005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT19211/84A IT1173062B (it) | 1983-01-22 | 1984-01-18 | Dispositivo di illuminazione per un indicatore passivo funzionante a riflessione |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE3302157C2 (it) |
FR (1) | FR2539901A3 (it) |
GB (1) | GB2135806B (it) |
IT (1) | IT1173062B (it) |
Family Cites Families (12)
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 (de) * | 1970-05-16 | 1971-11-25 | Imp Gmbh Radio Fernsehen Phone | Flutlichtskala mit einem flachen, quaderförmigen Lichtleiter und mit einer Aussparung zur Aufnahme einer Lampe an einem Ende |
IT1110243B (it) * | 1978-02-17 | 1985-12-23 | Absil Jean | Dispositivo a pannelli luminosi |
DE2849919A1 (de) * | 1978-11-17 | 1980-05-29 | Ackeret Design & Eng | Anordnung zur sieben-segment-darstellung von ziffern |
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 (de) * | 1981-01-27 | 1982-08-19 | Siemens AG, 1000 Berlin und 8000 München | "passive elektrooptische anzeigevorrichtung" |
DE8208245U1 (de) * | 1982-03-23 | 1982-09-23 | Siemens AG, 1000 Berlin und 8000 München | Passive elektro-optische anzeigevorrichtung, insbesondere fluessigkristallanzeige, mit einem plattenfoermigen lichtleiter |
-
1983
- 1983-01-22 DE DE3302157A patent/DE3302157C2/de not_active Expired
-
1984
- 1984-01-18 IT IT19211/84A patent/IT1173062B/it active
- 1984-01-20 FR FR8400866A patent/FR2539901A3/fr active Granted
- 1984-01-23 GB GB08401723A patent/GB2135806B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT8419211A0 (it) | 1984-01-18 |
DE3302157A1 (de) | 1984-07-26 |
DE3302157C2 (de) | 1987-05-14 |
FR2539901B3 (it) | 1984-12-21 |
GB8401723D0 (en) | 1984-02-22 |
FR2539901A3 (fr) | 1984-07-27 |
DE3302157C3 (it) | 1991-07-18 |
GB2135806A (en) | 1984-09-05 |
GB2135806B (en) | 1986-06-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19950210 |