GB1257986A - - Google Patents

Info

Publication number
GB1257986A
GB1257986A GB1257986DA GB1257986A GB 1257986 A GB1257986 A GB 1257986A GB 1257986D A GB1257986D A GB 1257986DA GB 1257986 A GB1257986 A GB 1257986A
Authority
GB
United Kingdom
Prior art keywords
reflector
segments
light
image
lamp
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
Other languages
English (en)
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 filed Critical
Publication of GB1257986A publication Critical patent/GB1257986A/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)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB1257986D 1968-04-29 1969-04-28 Expired GB1257986A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72468868A 1968-04-29 1968-04-29

Publications (1)

Publication Number Publication Date
GB1257986A true GB1257986A (enrdf_load_stackoverflow) 1971-12-22

Family

ID=24911463

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1257986D Expired GB1257986A (enrdf_load_stackoverflow) 1968-04-29 1969-04-28

Country Status (3)

Country Link
US (1) US3588493A (enrdf_load_stackoverflow)
FR (1) FR2007195A1 (enrdf_load_stackoverflow)
GB (1) GB1257986A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027869A1 (en) * 1994-04-08 1995-10-19 Philips Electronics N.V. Electric lamp with reflector

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827782A (en) * 1972-12-11 1974-08-06 Eprod Inc Reflector apparatus
US4037341A (en) * 1973-08-13 1977-07-26 Johns-Manville Corporation Luminaire for lighting a sign and method
US4035631A (en) * 1975-12-15 1977-07-12 General Electric Company Projector lamp reflector
US4303971A (en) * 1979-10-29 1981-12-01 General Electric Company Luminaire
FR2494813A1 (fr) * 1980-11-21 1982-05-28 Faure Jean Lanterne perfectionnee pour eclairage public
DE3638669A1 (de) * 1986-11-12 1988-05-26 Auer Sog Glaswerke Gmbh Reflektor fuer zahnaerztliche und chirurgische operationsleuchten
USD317508S (en) 1989-03-08 1991-06-11 Lim Kenneth S Fluorescent reflector lamp
EP0456427B1 (en) * 1990-05-08 1998-01-28 Canon Kabushiki Kaisha Polarization converting apparatus
JPH05264904A (ja) * 1992-03-18 1993-10-15 Canon Inc 照明光学系および該照明光学系を用いた投写型画像表示装置
US5823662A (en) * 1994-08-25 1998-10-20 Lightware, Inc. High efficiency illumination system
DE102016011054A1 (de) 2016-09-12 2018-03-15 Bartenbach Holding Gmbh Leuchtensatz sowie Strahler hierfür

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027869A1 (en) * 1994-04-08 1995-10-19 Philips Electronics N.V. Electric lamp with reflector

Also Published As

Publication number Publication date
FR2007195A1 (enrdf_load_stackoverflow) 1970-01-02
US3588493A (en) 1971-06-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee