GB334891A - Improvements relating to light ray reflectors - Google Patents

Improvements relating to light ray reflectors

Info

Publication number
GB334891A
GB334891A GB1778229A GB1778229A GB334891A GB 334891 A GB334891 A GB 334891A GB 1778229 A GB1778229 A GB 1778229A GB 1778229 A GB1778229 A GB 1778229A GB 334891 A GB334891 A GB 334891A
Authority
GB
United Kingdom
Prior art keywords
facets
reflector
reflecting
grooves
bulb
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
GB1778229A
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 GB1778229A priority Critical patent/GB334891A/en
Publication of GB334891A publication Critical patent/GB334891A/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
    • 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
    • F21V7/10—Construction

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

334,891. Macnab, J., and Mhitarian, M. June 10, 1929. Reflectors.-A curved reflector a for illumination purposes is formed with grooves and facets f arranged concentrically with respect to an electric lamp bulb c, the facets beyond each groove being set back so as to make the reflector relatively flat, and the angles of the facets varying progressively towards the periphery so as to produce a substantially parallel beam. The reflector may be made of metal, glass or wood, and the grooves and facets may be formed by stamping, pressing, casting, moulding, or cutting or turning by machinery. The facets may be made highly reflecting or diffusing by silver, nickel, or chromium plating, by coating a bright metal surface with a transparent varnish or lacquer, or by painting or enamelling. The facets may be white, of a uniform colour, or of different colours singly or in groups. The front of the bulb c may be frosted, painted, or coated with an obscuring or reflecting medium, or it may be provided with a reflecting cap d supported as by means of one or more rods e. Specifications 21191/13, and 284,378, [Class 3 (ii), Advertising other than by moving &c.], are referred to.
GB1778229A 1929-06-10 1929-06-10 Improvements relating to light ray reflectors Expired GB334891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1778229A GB334891A (en) 1929-06-10 1929-06-10 Improvements relating to light ray reflectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1778229A GB334891A (en) 1929-06-10 1929-06-10 Improvements relating to light ray reflectors

Publications (1)

Publication Number Publication Date
GB334891A true GB334891A (en) 1930-09-10

Family

ID=10101094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1778229A Expired GB334891A (en) 1929-06-10 1929-06-10 Improvements relating to light ray reflectors

Country Status (1)

Country Link
GB (1) GB334891A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673288A (en) * 1948-10-12 1954-03-23 Westinghouse Brake & Signal Reflector for the production of light beams
US4081667A (en) * 1976-07-28 1978-03-28 Optical Coating Laboratory, Inc. Lighting fixture having fresnel reflector with high reflection coating thereon
DE2707143A1 (en) * 1977-02-18 1978-08-24 Bartenbach Christian INDIRECT CEILING LAMP
US4920469A (en) * 1988-11-02 1990-04-24 Harding David K Light beam amplifier
US5532909A (en) * 1992-01-06 1996-07-02 Koito Manufacturing Co., Ltd. Reflector for a vehicular lamp and method of producing a die therefor
US5707141A (en) * 1995-07-28 1998-01-13 Koito Manufacturing Co., Ltd. Vehicle lamp
US5727874A (en) * 1995-07-28 1998-03-17 Koito Manufacturing Co., Ltd. Vehicle lamp
US5777809A (en) * 1995-07-28 1998-07-07 Koito Manufacturing Co., Ltd. Reflection mirror for a vehicle lamp and a method of forming the same
US5836668A (en) * 1995-07-17 1998-11-17 Koito Manufacturing Co., Ltd. Method of forming a reflection surface of a reflection mirror of a vehicle lamp
US5966256A (en) * 1995-07-07 1999-10-12 Koito Manufacturing Co., Ltd. Vehicle lamp with reflection mirror and a method of forming the same
EP1411294A3 (en) * 2002-10-15 2006-06-07 Siteco Beleuchtungstechnik GmbH Reflector having a structured surface and luminaire or indirect lighting system including such a reflector

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673288A (en) * 1948-10-12 1954-03-23 Westinghouse Brake & Signal Reflector for the production of light beams
US4081667A (en) * 1976-07-28 1978-03-28 Optical Coating Laboratory, Inc. Lighting fixture having fresnel reflector with high reflection coating thereon
DE2707143A1 (en) * 1977-02-18 1978-08-24 Bartenbach Christian INDIRECT CEILING LAMP
US4920469A (en) * 1988-11-02 1990-04-24 Harding David K Light beam amplifier
US5532909A (en) * 1992-01-06 1996-07-02 Koito Manufacturing Co., Ltd. Reflector for a vehicular lamp and method of producing a die therefor
US5966256A (en) * 1995-07-07 1999-10-12 Koito Manufacturing Co., Ltd. Vehicle lamp with reflection mirror and a method of forming the same
US5836668A (en) * 1995-07-17 1998-11-17 Koito Manufacturing Co., Ltd. Method of forming a reflection surface of a reflection mirror of a vehicle lamp
US5707141A (en) * 1995-07-28 1998-01-13 Koito Manufacturing Co., Ltd. Vehicle lamp
US5727874A (en) * 1995-07-28 1998-03-17 Koito Manufacturing Co., Ltd. Vehicle lamp
US5777809A (en) * 1995-07-28 1998-07-07 Koito Manufacturing Co., Ltd. Reflection mirror for a vehicle lamp and a method of forming the same
EP1411294A3 (en) * 2002-10-15 2006-06-07 Siteco Beleuchtungstechnik GmbH Reflector having a structured surface and luminaire or indirect lighting system including such a reflector

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