GB452486A - Improvements in or relating to electric lighting with reflectors - Google Patents
Improvements in or relating to electric lighting with reflectorsInfo
- Publication number
- GB452486A GB452486A GB5856/35A GB585635A GB452486A GB 452486 A GB452486 A GB 452486A GB 5856/35 A GB5856/35 A GB 5856/35A GB 585635 A GB585635 A GB 585635A GB 452486 A GB452486 A GB 452486A
- Authority
- GB
- United Kingdom
- Prior art keywords
- illuminating
- lamp
- bulbs
- reflector
- bulb
- 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)
Abstract
452,486. Lamps for illuminating pictures etc.; floodlights. ALLOM, D. S., 16, Grosvenor Place, Westminster. Feb. 23, 1935, No. 5856. [Class 75 (iv)] A lamp for illuminating ceilings, pictures, tapestries, or the like, or for floodlighting buildings or other structures, comprises one or more tubular electric light bulbs A, a troughshaped reflector B of parabolic section, and a trough-shaped reflector C of circular section which intercepts those rays from the bulb or bulbs which are outside the field of the parabolic reflector and which would fall on the object to be illuminated and redirects them back through the bulb or bulbs on to the parabolic reflector without intercepting any of the rays projected by the parabolic reflector. Both reflectors are approximately co-extensive with the length of the bulb or bulbs, and the lamp may include a casing D. For illuminating a ceiling Y the lamp may be screened by a cornice X, and for illuminating a picture or the like the lamp may be arranged to project the light upwards or downwards.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5856/35A GB452486A (en) | 1935-02-23 | 1935-02-23 | Improvements in or relating to electric lighting with reflectors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5856/35A GB452486A (en) | 1935-02-23 | 1935-02-23 | Improvements in or relating to electric lighting with reflectors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB452486A true GB452486A (en) | 1936-08-24 |
Family
ID=9803904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5856/35A Expired GB452486A (en) | 1935-02-23 | 1935-02-23 | Improvements in or relating to electric lighting with reflectors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB452486A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3702236A1 (en) * | 1986-01-27 | 1987-12-10 | Steinecke Wolfhart | Reflector lamp for the indirect lighting of a room |
-
1935
- 1935-02-23 GB GB5856/35A patent/GB452486A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3702236A1 (en) * | 1986-01-27 | 1987-12-10 | Steinecke Wolfhart | Reflector lamp for the indirect lighting of a room |
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