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
Application number
Inventor
John Alfred Stevens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB190405191A publication Critical patent/GB190405191A/en
Expired legal-status Critical Current

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  • 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.
GB190405191D 1904-03-02 1904-03-02 Improvements in Lenses for Bullseye or like Lamps. Expired GB190405191A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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