GB740239A - Improvements in photo-electric detector units for automatic headlamp dimming apparatus - Google Patents
Improvements in photo-electric detector units for automatic headlamp dimming apparatusInfo
- Publication number
- GB740239A GB740239A GB29557/54A GB2955754A GB740239A GB 740239 A GB740239 A GB 740239A GB 29557/54 A GB29557/54 A GB 29557/54A GB 2955754 A GB2955754 A GB 2955754A GB 740239 A GB740239 A GB 740239A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photo
- electric
- dimming apparatus
- electric detector
- automatic headlamp
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
- B60Q1/1415—Dimming circuits
- B60Q1/1423—Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
- B60Q2300/40—Indexing codes relating to other road users or special conditions
- B60Q2300/42—Indexing codes relating to other road users or special conditions oncoming vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
740,239. Photo-electric headlamp dimmer. GENERAL MOTORS CORPORATION. Oct. 20, 1952 [Nov. 10, 1951], No. 29557/54. Divided out of 740,160. Drawings to Specification. Class 40 (3). The subject-matter of the first five Figures of the present Specification is substantially identical with that of Specification 740,160, but the claims are directed to a photo-electric detector unit for automatic headlamp dimming apparatus wherein the photo-electric cell is exposed through a filter impervious to blue light but permitting the passage of light from the lamps of approaching vehicles. An embodiment is also described however (Fig. 6, not shown) where the refracting unit of the application referred to above is replaced by a flat filter of amber-coloured glass or plastic material for blocking blue light.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US740239XA | 1951-11-10 | 1951-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB740239A true GB740239A (en) | 1955-11-09 |
Family
ID=22117224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29557/54A Expired GB740239A (en) | 1951-11-10 | 1952-10-20 | Improvements in photo-electric detector units for automatic headlamp dimming apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB740239A (en) |
-
1952
- 1952-10-20 GB GB29557/54A patent/GB740239A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB740239A (en) | Improvements in photo-electric detector units for automatic headlamp dimming apparatus | |
GB740240A (en) | Improvements in photo-electric detector units for automatic headlamp dimming apparatus | |
ES212840A3 (en) | An apparatus for anti-sliding capture and intermittent emission of luminous rays for vehicles (Machine-translation by Google Translate, not legally binding) | |
GB1112838A (en) | Improvements in or relating to lamps for producing coloured light | |
GB594706A (en) | Improvements in or relating to anti-dazzle and/or fog lamps | |
GB799975A (en) | Improvements in shades for electric lamps | |
AU456191B2 (en) | Luminaires utilizing high intensity light sources | |
CA675975A (en) | Incandescent lamp light arrangement | |
ES223791A2 (en) | Improvements in the manufacture of lamps for anti-sliding headlights (Machine-translation by Google Translate, not legally binding) | |
AU160830B2 (en) | Incandescent lamps with multi-filaments for headlights | |
CA491401A (en) | Headlight dimming system | |
CA471621A (en) | Discharge lamps with light flashes | |
CA497119A (en) | Light bulb socket mounting | |
SE329670B (en) | ||
JPS53144178A (en) | Device for detecting lighting or extincton of illumination lamp | |
GB726926A (en) | Improvements in or relating to electronic flash light photography | |
AU1315852A (en) | Incandescent lamps with multi-filaments for headlights | |
GB796416A (en) | Improvements in or relating to kinematograph film projectors | |
CA476267A (en) | Light diffusing screens | |
CA759899A (en) | Light diffusing coating for incandescent lamps | |
AU415697B2 (en) | Efficient incandescent light source | |
CA689712A (en) | Automatic light control for incandescent lamps | |
AU163040B2 (en) | Arrangement for amplifying the light intensity ofan optically projected image | |
AU205311B2 (en) | Photoelectric detector unit for automatic headlamp dimming apparatus | |
GB571290A (en) | Improvements relating to light signalling apparatus |