GB370922A - An anti-dazzle device for lamps - Google Patents
An anti-dazzle device for lampsInfo
- Publication number
- GB370922A GB370922A GB37194/30A GB3719430A GB370922A GB 370922 A GB370922 A GB 370922A GB 37194/30 A GB37194/30 A GB 37194/30A GB 3719430 A GB3719430 A GB 3719430A GB 370922 A GB370922 A GB 370922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- source
- light
- reflector
- lamps
- 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
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/04—Optical design
- F21V7/09—Optical design with a combination of different curvatures
-
- 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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
370,922. Antidazzle device for vehicle &c. lamps. MUDDLE, A. A., Avon Lodge, Coast Road, Pevensey Bay, Sussex. Dec. 10, 1930, No. 37194. [Class 75 (iv).] Lantern screens.-In an antidazzle device for vehicle and like lamps in which a screen is arranged to cut off direct rays from the source of light b to portions of the reflector a, one part f of the screen subtends a sector of the reflector of from about 30 to 50‹ at one side of its vertical axial plane whilst a second part g subtends a diametrically opposite sector of from about 15 to 30‹. The screen may be made of polished sheet metal with the base m of the part f blackened or otherwise rendered non-reflective, both parts f, g may be bent outwardly about a mid-rib, and the part g may be extended to project in front of the source of light. The central portion h of the screen is apertured to receive the lamp cap which carries a positioning spring, the tail of which passes through a hole in the portion h and engages a depression in the reflector a to insure the correct angular positioning of the screen with respect to the source of light. The Provisional Specification refers to the screen wholly surrounding the source of light, its being made of wire gauze, and its being operated at will.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB37194/30A GB370922A (en) | 1930-12-10 | 1930-12-10 | An anti-dazzle device for lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB37194/30A GB370922A (en) | 1930-12-10 | 1930-12-10 | An anti-dazzle device for lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB370922A true GB370922A (en) | 1932-04-11 |
Family
ID=10394544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37194/30A Expired GB370922A (en) | 1930-12-10 | 1930-12-10 | An anti-dazzle device for lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB370922A (en) |
-
1930
- 1930-12-10 GB GB37194/30A patent/GB370922A/en not_active Expired
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