GB1440988A - Vehicle headlamps - Google Patents
Vehicle headlampsInfo
- Publication number
- GB1440988A GB1440988A GB5791073A GB5791073A GB1440988A GB 1440988 A GB1440988 A GB 1440988A GB 5791073 A GB5791073 A GB 5791073A GB 5791073 A GB5791073 A GB 5791073A GB 1440988 A GB1440988 A GB 1440988A
- Authority
- GB
- United Kingdom
- Prior art keywords
- region
- glass
- prisms
- disperse
- dec
- 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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/28—Cover glass
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
1440988 Vehicle headlamps WESTFALISCHE METALL INDUSTRIE KG HUECK & CO 13 Dec 1973 [14 Dec 1972] 57910/73 Heading F4R A dipped-beam headlamp has a front glass 1, Fig. 1, so constructed that it produces a beam with a light-dark cut-off having an upwardly inclined nearside section 2, Fig. 3, a horizontal offside section 4 and a step 3 between the sections. In the absence of the front glass the lamp produces a beam of the form shown in Fig. 2, the regions A, B and C of the glass being provided with prisms to deflect the portions A<SP>1</SP>, B<SP>1</SP> and C<SP>1</SP> of the beam in the directions of the arrows into new positions A<SP>11</SP>, B<SP>11</SP> and C<SP>11</SP>, Fig. 3. The region D has prisms and lenses which simultaneously deflect and disperse the portion D<SP>1</SP> of the beam into the new position D<SP>11</SP>, and the region E has cylindrical lenses which disperse the portion E<SP>1</SP> of the beam in the horizontal direction. The region F of the glass is used only for main beam illumination.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2261054A DE2261054C3 (en) | 1972-12-14 | 1972-12-14 | Vehicle headlights with asymmetrical light distribution |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1440988A true GB1440988A (en) | 1976-06-30 |
Family
ID=5864334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5791073A Expired GB1440988A (en) | 1972-12-14 | 1973-12-13 | Vehicle headlamps |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE2261054C3 (en) |
FR (1) | FR2210742B1 (en) |
GB (1) | GB1440988A (en) |
IT (1) | IT999985B (en) |
SE (1) | SE405469B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2311364A (en) * | 1996-03-20 | 1997-09-24 | Bosch Gmbh Robert | Low beam headlamp for vehicles |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0479490A3 (en) * | 1990-10-02 | 1992-08-12 | Physical Optics Corporation | Volume holographic diffuser |
DE19548485A1 (en) * | 1995-12-22 | 1997-06-26 | Bayerische Motoren Werke Ag | Low beam headlights for vehicles |
DE19718540A1 (en) * | 1997-05-02 | 1998-11-05 | Hella Kg Hueck & Co | Universal headlamp for vehicle |
-
1972
- 1972-12-14 DE DE2261054A patent/DE2261054C3/en not_active Expired
-
1973
- 1973-12-06 FR FR7343625A patent/FR2210742B1/fr not_active Expired
- 1973-12-12 SE SE7316754A patent/SE405469B/en unknown
- 1973-12-13 IT IT70679/73A patent/IT999985B/en active
- 1973-12-13 GB GB5791073A patent/GB1440988A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2311364A (en) * | 1996-03-20 | 1997-09-24 | Bosch Gmbh Robert | Low beam headlamp for vehicles |
GB2311364B (en) * | 1996-03-20 | 1998-04-29 | Bosch Gmbh Robert | Low beam headlamp for vehicles |
Also Published As
Publication number | Publication date |
---|---|
SE405469B (en) | 1978-12-11 |
IT999985B (en) | 1976-03-10 |
DE2261054A1 (en) | 1974-06-27 |
DE2261054B2 (en) | 1978-11-30 |
FR2210742A1 (en) | 1974-07-12 |
FR2210742B1 (en) | 1977-09-30 |
DE2261054C3 (en) | 1979-08-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |