GB478261A - Improvements in or relating to lighting fittings - Google Patents

Improvements in or relating to lighting fittings

Info

Publication number
GB478261A
GB478261A GB1974436A GB1974436A GB478261A GB 478261 A GB478261 A GB 478261A GB 1974436 A GB1974436 A GB 1974436A GB 1974436 A GB1974436 A GB 1974436A GB 478261 A GB478261 A GB 478261A
Authority
GB
United Kingdom
Prior art keywords
relating
lighting
concave
lighting fittings
biggleston
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
GB1974436A
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 GB1974436A priority Critical patent/GB478261A/en
Publication of GB478261A publication Critical patent/GB478261A/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

478,261. Light reflectors. BIGGLESTON, H., (trading as ELECTRIC STREET LIGHTING APPARATUS CO.), and WILMAN, D. July 16, 1936, No. 19744. [Class 75 (ii)] A lighting-fitting comprises an elongated oval casing 1 formed with a lamp socket 2 and having cemented or otherwise secured to its concave inner surface a concave glass or metal refiector 3 consisting of a single sheet, a number of longitudinally arranged strips, or a number of small sections. The reflecting surfaces may be continuously curved in the direction of their length or comprise a number of facets slightly inclined to one another, forming an approximately parabolic whole and giving practically uniform illumination.
GB1974436A 1936-07-16 1936-07-16 Improvements in or relating to lighting fittings Expired GB478261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1974436A GB478261A (en) 1936-07-16 1936-07-16 Improvements in or relating to lighting fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1974436A GB478261A (en) 1936-07-16 1936-07-16 Improvements in or relating to lighting fittings

Publications (1)

Publication Number Publication Date
GB478261A true GB478261A (en) 1938-01-17

Family

ID=10134478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1974436A Expired GB478261A (en) 1936-07-16 1936-07-16 Improvements in or relating to lighting fittings

Country Status (1)

Country Link
GB (1) GB478261A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028542A (en) * 1974-09-11 1977-06-07 Esquire, Inc. Faceted parabolic-type reflector system
WO2008150254A1 (en) 2007-05-23 2008-12-11 Ruud Lighting, Inc. Luminaire with a compound parabolic reflector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4028542A (en) * 1974-09-11 1977-06-07 Esquire, Inc. Faceted parabolic-type reflector system
WO2008150254A1 (en) 2007-05-23 2008-12-11 Ruud Lighting, Inc. Luminaire with a compound parabolic reflector
EP2147247A1 (en) * 2007-05-23 2010-01-27 Ruud Lighting, Inc. Luminaire with a compound parabolic reflector
EP2147247A4 (en) * 2007-05-23 2011-03-30 Ruud Lighting Inc Luminaire with a compound parabolic reflector
AU2007354673B2 (en) * 2007-05-23 2013-05-02 Ideal Industries Lighting Llc Luminaire with a compound parabolic reflector

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