GB215120A - Improvements in or relating to vehicle and like lamps - Google Patents
Improvements in or relating to vehicle and like lampsInfo
- Publication number
- GB215120A GB215120A GB3794/23A GB379423A GB215120A GB 215120 A GB215120 A GB 215120A GB 3794/23 A GB3794/23 A GB 3794/23A GB 379423 A GB379423 A GB 379423A GB 215120 A GB215120 A GB 215120A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- reflector
- upper reflector
- semi
- axis
- 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
- F21S41/338—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having surface portions added to its general concavity
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
215,120. Goodwin, J. M. H. Feb. 12, 1923. Lamps forming a line of light.-A vehicle or like lamp has an upper semi-circular or slightly more than semi-circular reflecting cylinder DE and a lower substantially parabolic reflecting cylinder DG, and a source of light so disposed with respect to said reflectors that no part of it, or of its image formed by the upper reflector DE, lies outside a region bounded in front by a plane MG passing through the lower edge G and focal line F of the lower reflector DG, and at the bottom either by the horizontal plane DH through the lower edge E of the upper reflector DE or the horizontal plane through the focal line F of the lower reflector DG whichever plane is the higher. In one form, Fig. 2, where the upper reflector DE is slightly greater than a semi-circle, the light source may be placed anywhere within a prism LKFM, two of whose sides lie along the planes MG, DH and whose centre line is the axis C of the upper reflector. A linear source of light may be used having its centre on the axis C and its lower end at the focus F of the lower reflector. In another arrangement, a linear source of light is disposed along the axis of the upper reflector. Side reflectors may be provided, and may consist of vertical cylinders to concentrate the light in a forward direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3794/23A GB215120A (en) | 1923-02-12 | 1923-02-12 | Improvements in or relating to vehicle and like lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3794/23A GB215120A (en) | 1923-02-12 | 1923-02-12 | Improvements in or relating to vehicle and like lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB215120A true GB215120A (en) | 1924-05-08 |
Family
ID=9765019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3794/23A Expired GB215120A (en) | 1923-02-12 | 1923-02-12 | Improvements in or relating to vehicle and like lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB215120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8372428B2 (en) | 1999-02-26 | 2013-02-12 | Shionogi & Co., Ltd. | Chewable soft capsule having improved ingestion property and method for producing same |
-
1923
- 1923-02-12 GB GB3794/23A patent/GB215120A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8372428B2 (en) | 1999-02-26 | 2013-02-12 | Shionogi & Co., Ltd. | Chewable soft capsule having improved ingestion property and method for producing same |
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