FR764922A - Lighthouse including a parabolic mirror - Google Patents
Lighthouse including a parabolic mirrorInfo
- Publication number
- FR764922A FR764922A FR764922DA FR764922A FR 764922 A FR764922 A FR 764922A FR 764922D A FR764922D A FR 764922DA FR 764922 A FR764922 A FR 764922A
- Authority
- FR
- France
- Prior art keywords
- lighthouse
- parabolic mirror
- parabolic
- mirror
- lighthouse including
- 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
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE764922X | 1932-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR764922A true FR764922A (en) | 1934-05-30 |
Family
ID=6672966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR764922D Expired FR764922A (en) | 1932-11-23 | 1933-11-22 | Lighthouse including a parabolic mirror |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR764922A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2394745A1 (en) * | 1977-06-17 | 1979-01-12 | Lucas Industries Ltd | MOTOR VEHICLE REFLECTOR |
FR2495276A1 (en) * | 1980-12-01 | 1982-06-04 | Westfaelische Metall Industrie | Headlamp for motor vehicle with hole in reflector forming paraboloid - has two section reflector with stepped transition forming hole for lamp |
FR2525733A1 (en) * | 1982-04-23 | 1983-10-28 | Auteroche Sa | Headlamp reflector with sub-reflector to aim beam downwards - uses main reflector with stepped parabolic segments moulded in to deflect down part of light beam |
FR2769687A1 (en) * | 1997-10-13 | 1999-04-16 | Valeo Vision | LEFT AND RIGHT MOTOR VEHICLE ASSEMBLY WITH IMPROVED PHOTOMETRIC PROPERTIES |
-
1933
- 1933-11-22 FR FR764922D patent/FR764922A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2394745A1 (en) * | 1977-06-17 | 1979-01-12 | Lucas Industries Ltd | MOTOR VEHICLE REFLECTOR |
FR2495276A1 (en) * | 1980-12-01 | 1982-06-04 | Westfaelische Metall Industrie | Headlamp for motor vehicle with hole in reflector forming paraboloid - has two section reflector with stepped transition forming hole for lamp |
FR2525733A1 (en) * | 1982-04-23 | 1983-10-28 | Auteroche Sa | Headlamp reflector with sub-reflector to aim beam downwards - uses main reflector with stepped parabolic segments moulded in to deflect down part of light beam |
FR2769687A1 (en) * | 1997-10-13 | 1999-04-16 | Valeo Vision | LEFT AND RIGHT MOTOR VEHICLE ASSEMBLY WITH IMPROVED PHOTOMETRIC PROPERTIES |
US6210027B1 (en) | 1997-10-13 | 2001-04-03 | Valeo Vision | Set of left and right motor vehicle headlamps with improved photometric properties |
DE19844094B4 (en) * | 1997-10-13 | 2012-08-02 | Valeo Vision | Set of left and right motor vehicle headlights with improved photometric properties |
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