GB394939A - Improvements in reflectors - Google Patents
Improvements in reflectorsInfo
- Publication number
- GB394939A GB394939A GB11159/33A GB1115933A GB394939A GB 394939 A GB394939 A GB 394939A GB 11159/33 A GB11159/33 A GB 11159/33A GB 1115933 A GB1115933 A GB 1115933A GB 394939 A GB394939 A GB 394939A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dihedrons
- reflector
- april
- parabolic
- vehicle
- 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
- F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Optical Elements Other Than Lenses (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
394,939. Vehicle-lamp refiectors. SCHIMPFF, E., 717, Harrison Avenue, Scranton, Pennsylvania, U.S.A. April 13, 1933, No. 11159. Convention date, April 14, 1932. [Class 75 (ii).] A vehicle-lamp reflector is of substantially parabolic form with a smooth upper half 10 and a lower half which is formed with an outer series of symmetrical dihedrons 12, the sides 16, 17 of which form equal angles with planes passing through the axis of the reflector, and with an inner series of dihedrons 11 each having a relatively wide surface 14 conforming longitudinally to a parabolic surface and a relatively narrow surface 15 substantially radial to the axis of the reflector. The surfaces 14 are flat laterally and are bent inwardly about 15‹ to planes tangential to the parabolic surface so as to deflect light towards the sides of the road. The surfaces 16, 17 are preferably at 45‹ to the tangents, and the dihedrons 12 are smaller than and preferably only half the length of the dihedrons 11.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US394939XA | 1932-04-14 | 1932-04-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB394939A true GB394939A (en) | 1933-07-06 |
Family
ID=21905772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11159/33A Expired GB394939A (en) | 1932-04-14 | 1933-04-13 | Improvements in reflectors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB394939A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2121947A (en) * | 1982-06-09 | 1984-01-04 | Cibie Projecteurs | Dipped headlamp for automobiles |
-
1933
- 1933-04-13 GB GB11159/33A patent/GB394939A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2121947A (en) * | 1982-06-09 | 1984-01-04 | Cibie Projecteurs | Dipped headlamp for automobiles |
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