BE509547A - - Google Patents
Info
- Publication number
- BE509547A BE509547A BE509547DA BE509547A BE 509547 A BE509547 A BE 509547A BE 509547D A BE509547D A BE 509547DA BE 509547 A BE509547 A BE 509547A
- Authority
- BE
- Belgium
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/06—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for filtering out ultraviolet radiation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1033182T | 1951-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE509547A true BE509547A (enrdf_load_html_response) |
Family
ID=9584285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE509547D BE509547A (enrdf_load_html_response) | 1951-02-27 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE509547A (enrdf_load_html_response) |
| FR (1) | FR1033182A (enrdf_load_html_response) |
-
0
- BE BE509547D patent/BE509547A/xx unknown
-
1951
- 1951-02-27 FR FR1033182D patent/FR1033182A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1033182A (fr) | 1953-07-08 |