GB535694A - Improvements in or relating to reflectors for electric lamps and the like - Google Patents
Improvements in or relating to reflectors for electric lamps and the likeInfo
- Publication number
- GB535694A GB535694A GB2584039A GB2584039A GB535694A GB 535694 A GB535694 A GB 535694A GB 2584039 A GB2584039 A GB 2584039A GB 2584039 A GB2584039 A GB 2584039A GB 535694 A GB535694 A GB 535694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- reflector
- stepped
- size
- reflectors
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
535,694. Reflectors. DOWNER, G. V. Sept. 14, 1939. No. 25840. [Class 75 (ii)] A reflector, for use with an electric or other lamp of any size within a given range, comprises a reflecting skirt portion 6 and a plurality of stepped co-axial zones 1, 2, 3 each designed to co-operate with a lamp of one standardized size, the reflector being fixed relative to the lamp, so that the desired distribution of light will always be obtained, without focussing or adjustment, with any size of lamp within the given range. The reflector may be made of aluminium, steel or plastics, and each stepped reflecting zone may be curved or formed from two or more inclined surfaces of rectilinear crosssection. The reflector may have a neck portion 4 with a flange 5 to rest on the shoulder of the lamp; alternatively the neck portion may support the lamp holder. In plan the reflector may be circular or rectangular ; or it may be trough-shaped with the stepped zones along the sides and/or ends of the trough.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2584039A GB535694A (en) | 1939-09-14 | 1939-09-14 | Improvements in or relating to reflectors for electric lamps and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2584039A GB535694A (en) | 1939-09-14 | 1939-09-14 | Improvements in or relating to reflectors for electric lamps and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB535694A true GB535694A (en) | 1941-04-18 |
Family
ID=10234199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2584039A Expired GB535694A (en) | 1939-09-14 | 1939-09-14 | Improvements in or relating to reflectors for electric lamps and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB535694A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2629046A (en) * | 1951-01-03 | 1953-02-17 | Liberman Milton | Lamp supported reflector unit |
-
1939
- 1939-09-14 GB GB2584039A patent/GB535694A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2629046A (en) * | 1951-01-03 | 1953-02-17 | Liberman Milton | Lamp supported reflector unit |
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