FR994022A - Perfectionnements apportés aux projecteurs - Google Patents
Perfectionnements apportés aux projecteursInfo
- Publication number
- FR994022A FR994022A FR994022DA FR994022A FR 994022 A FR994022 A FR 994022A FR 994022D A FR994022D A FR 994022DA FR 994022 A FR994022 A FR 994022A
- Authority
- FR
- France
- Prior art keywords
- projectors
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/338—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having surface portions added to its general concavity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/17—Discharge light sources
- F21S41/173—Fluorescent light sources
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR994022T | 1944-12-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR994022A true FR994022A (fr) | 1951-11-09 |
Family
ID=9556074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR994022D Expired FR994022A (fr) | 1944-12-06 | 1944-12-06 | Perfectionnements apportés aux projecteurs |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR994022A (fr) |
-
1944
- 1944-12-06 FR FR994022D patent/FR994022A/fr not_active Expired
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