JPS4977650A - - Google Patents
Info
- Publication number
- JPS4977650A JPS4977650A JP48120075A JP12007573A JPS4977650A JP S4977650 A JPS4977650 A JP S4977650A JP 48120075 A JP48120075 A JP 48120075A JP 12007573 A JP12007573 A JP 12007573A JP S4977650 A JPS4977650 A JP S4977650A
- Authority
- JP
- Japan
- 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.)
- Pending
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
- 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
- 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
-
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Details Of Measuring And Other Instruments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4981972A GB1438639A (en) | 1972-10-28 | 1972-10-28 | Indicator panels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4977650A true JPS4977650A (it) | 1974-07-26 |
Family
ID=10453657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48120075A Pending JPS4977650A (it) | 1972-10-28 | 1973-10-26 |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS4977650A (it) |
| DE (1) | DE2353712A1 (it) |
| FR (1) | FR2205245A5 (it) |
| GB (1) | GB1438639A (it) |
| IN (1) | IN139638B (it) |
| IT (1) | IT996335B (it) |
-
1972
- 1972-10-28 GB GB4981972A patent/GB1438639A/en not_active Expired
-
1973
- 1973-10-18 IN IN2320/CAL/73A patent/IN139638B/en unknown
- 1973-10-24 FR FR7337835A patent/FR2205245A5/fr not_active Expired
- 1973-10-26 JP JP48120075A patent/JPS4977650A/ja active Pending
- 1973-10-26 IT IT5336573A patent/IT996335B/it active
- 1973-10-26 DE DE19732353712 patent/DE2353712A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT996335B (it) | 1975-12-10 |
| AU6143873A (en) | 1975-04-17 |
| IN139638B (it) | 1976-07-10 |
| GB1438639A (en) | 1976-06-09 |
| DE2353712A1 (de) | 1974-05-02 |
| FR2205245A5 (it) | 1974-05-24 |