FR2317719A1 - Tableau pour inscriptions pouvant a volonte etre rendues lumineuses - Google Patents
Tableau pour inscriptions pouvant a volonte etre rendues lumineusesInfo
- Publication number
- FR2317719A1 FR2317719A1 FR7521630A FR7521630A FR2317719A1 FR 2317719 A1 FR2317719 A1 FR 2317719A1 FR 7521630 A FR7521630 A FR 7521630A FR 7521630 A FR7521630 A FR 7521630A FR 2317719 A1 FR2317719 A1 FR 2317719A1
- Authority
- FR
- France
- Prior art keywords
- plaque
- light
- display panel
- night
- day
- 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
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
- G02B6/0033—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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
-
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/18—Edge-illuminated signs
- G09F2013/1804—Achieving homogeneous illumination
- G09F2013/1809—Achieving homogeneous illumination using a non-homogeneous front window
- G09F2013/1813—Achieving homogeneous illumination using a non-homogeneous front window provided with a coating showing a pattern of dots of variable density
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7521630A FR2317719A1 (fr) | 1975-07-10 | 1975-07-10 | Tableau pour inscriptions pouvant a volonte etre rendues lumineuses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7521630A FR2317719A1 (fr) | 1975-07-10 | 1975-07-10 | Tableau pour inscriptions pouvant a volonte etre rendues lumineuses |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2317719A1 true FR2317719A1 (fr) | 1977-02-04 |
FR2317719B1 FR2317719B1 (fr) | 1977-12-16 |
Family
ID=9157746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7521630A Granted FR2317719A1 (fr) | 1975-07-10 | 1975-07-10 | Tableau pour inscriptions pouvant a volonte etre rendues lumineuses |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2317719A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0034744A1 (fr) * | 1980-02-21 | 1981-09-02 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dispositif d'éclairage pour indicateurs |
EP0040434A1 (fr) * | 1980-05-21 | 1981-11-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dispositif d'éclairage pour panneau indicateur |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR417721A (fr) * | 1909-05-11 | 1910-11-21 | John Baptist Reiner | Perfectionnements aux enseignes et indicateurs lumineux |
FR816795A (fr) * | 1936-04-20 | 1937-08-17 | Holophane Sa | Objets décoratifs lumineux |
GB664193A (en) * | 1949-02-26 | 1952-01-02 | Ilford Ltd | Photographic dark-room lamp |
FR1268295A (fr) * | 1960-09-23 | 1961-07-28 | Procédé de production d'images et d'inscriptions lumineuses, et dispositif pour la mise en oeuvre de ce procédé |
-
1975
- 1975-07-10 FR FR7521630A patent/FR2317719A1/fr active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR417721A (fr) * | 1909-05-11 | 1910-11-21 | John Baptist Reiner | Perfectionnements aux enseignes et indicateurs lumineux |
FR816795A (fr) * | 1936-04-20 | 1937-08-17 | Holophane Sa | Objets décoratifs lumineux |
GB664193A (en) * | 1949-02-26 | 1952-01-02 | Ilford Ltd | Photographic dark-room lamp |
FR1268295A (fr) * | 1960-09-23 | 1961-07-28 | Procédé de production d'images et d'inscriptions lumineuses, et dispositif pour la mise en oeuvre de ce procédé |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0034744A1 (fr) * | 1980-02-21 | 1981-09-02 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dispositif d'éclairage pour indicateurs |
EP0040434A1 (fr) * | 1980-05-21 | 1981-11-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Dispositif d'éclairage pour panneau indicateur |
Also Published As
Publication number | Publication date |
---|---|
FR2317719B1 (fr) | 1977-12-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |