GB190405191A - Improvements in Lenses for Bullseye or like Lamps. - Google Patents
Improvements in Lenses for Bullseye or like Lamps.Info
- Publication number
- GB190405191A GB190405191A GB190405191DA GB190405191A GB 190405191 A GB190405191 A GB 190405191A GB 190405191D A GB190405191D A GB 190405191DA GB 190405191 A GB190405191 A GB 190405191A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens
- lenses
- bullseye
- lamps
- reflector
- 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
Landscapes
- Optical Elements Other Than Lenses (AREA)
Abstract
5191. Stevens, J. A. March 2. Lenses ; reflectors.-A lens B for a bull's-eye or other lamp or lantern is recessed at b<5>. for the reception of an electric, gas, or other light or lights. The back b<4> of the lens may be formed with spiral, annular, or radial ribs b<7>, and is silvered or otherwise utilized as a reflector. The front b<1> of the lens may be convex, pyramidal, flat, recessed, or concave. Instead of silvering the back of the lens, a reflector may be placed behind the.light.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB190405191T | 1904-03-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB190405191A true GB190405191A (en) | 1904-12-31 |
Family
ID=32162874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB190405191D Expired GB190405191A (en) | 1904-03-02 | 1904-03-02 | Improvements in Lenses for Bullseye or like Lamps. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB190405191A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3131595A (en) * | 1961-03-15 | 1964-05-05 | Berdj C Kalustyan | De-magnifying optical system for transparency projection |
-
1904
- 1904-03-02 GB GB190405191D patent/GB190405191A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3131595A (en) * | 1961-03-15 | 1964-05-05 | Berdj C Kalustyan | De-magnifying optical system for transparency projection |
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