GB475857A - Improvements in lamp reflectors - Google Patents

Improvements in lamp reflectors

Info

Publication number
GB475857A
GB475857A GB1262137A GB1262137A GB475857A GB 475857 A GB475857 A GB 475857A GB 1262137 A GB1262137 A GB 1262137A GB 1262137 A GB1262137 A GB 1262137A GB 475857 A GB475857 A GB 475857A
Authority
GB
United Kingdom
Prior art keywords
reflectors
lamp reflectors
focus
dietrich
foci
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
GB1262137A
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
Priority to GB1262137A priority Critical patent/GB475857A/en
Publication of GB475857A publication Critical patent/GB475857A/en
Expired legal-status Critical Current

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
    • F21V7/09—Optical design with a combination of different curvatures

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

475,857. Reflectors. DIETRICH, F. R. May 3, 1937, No. 12621. [Class 75 (ii)] A reflector for a suspended lamp comprises two coaxial parts, one part 1 being ellipsoidal, approximating to a hemisphere, and having foci F\ F<2> on the axis, with the light source at the rear focus F<1>, the other part 2 being cylindrical and forming an extension of the open end of the part 1 and extending beyond the front focus F<2> to such a distance that it does not obstruct the rays reflected from the part 1. The apex 3 of the part 1 may be flattened, whilst the end of the part 2 may be closed by a slightly dispersive spherical glass 4.
GB1262137A 1937-05-03 1937-05-03 Improvements in lamp reflectors Expired GB475857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1262137A GB475857A (en) 1937-05-03 1937-05-03 Improvements in lamp reflectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1262137A GB475857A (en) 1937-05-03 1937-05-03 Improvements in lamp reflectors

Publications (1)

Publication Number Publication Date
GB475857A true GB475857A (en) 1937-11-26

Family

ID=10008061

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1262137A Expired GB475857A (en) 1937-05-03 1937-05-03 Improvements in lamp reflectors

Country Status (1)

Country Link
GB (1) GB475857A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846565A (en) * 1956-06-11 1958-08-05 Honeywell Regulator Co Photographic reflector and light source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846565A (en) * 1956-06-11 1958-08-05 Honeywell Regulator Co Photographic reflector and light source

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