GB806124A - Improvements in or relating to electric lighting arrangements for indoor illumination - Google Patents

Improvements in or relating to electric lighting arrangements for indoor illumination

Info

Publication number
GB806124A
GB806124A GB5734/55A GB573455A GB806124A GB 806124 A GB806124 A GB 806124A GB 5734/55 A GB5734/55 A GB 5734/55A GB 573455 A GB573455 A GB 573455A GB 806124 A GB806124 A GB 806124A
Authority
GB
United Kingdom
Prior art keywords
screen
relating
lighting arrangements
light directing
electric lighting
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
GB5734/55A
Inventor
John Malyon Waldram
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB5734/55A priority Critical patent/GB806124A/en
Publication of GB806124A publication Critical patent/GB806124A/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
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/06—Controlling the distribution of the light emitted by adjustment of elements by movement of refractors
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Abstract

806,124. Lighting arrangements. GENERAL ELECTRIC CO., Ltd. May 24, 1956 [Feb. 25, 1955], No. 5734/55. Classes 75(2) and 75(4) In an indoor lighting arrangement in which one or more electric lamps is located in an aperture above a ceiling, the aperture being closed by a light transmitting screen, the screen can be adjusted or replaced for changing the distribution of the emergent light. The screen may consist of a transparent disc having light directing members e.g. prisms or flutes, mounted for rotation about its axis. Alternatively, a set of interchangeable screens having different light directing properties may be used. In a further modification, two screens, 13, 20 each having sets of parallel prisms 14, 21 on the upper surface are mounted one above the other the lower screen only or each screen being rotatable about its axis independently of the other. Either screen may also be replaced by another having different light directing properties.
GB5734/55A 1955-02-25 1955-02-25 Improvements in or relating to electric lighting arrangements for indoor illumination Expired GB806124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5734/55A GB806124A (en) 1955-02-25 1955-02-25 Improvements in or relating to electric lighting arrangements for indoor illumination

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5734/55A GB806124A (en) 1955-02-25 1955-02-25 Improvements in or relating to electric lighting arrangements for indoor illumination

Publications (1)

Publication Number Publication Date
GB806124A true GB806124A (en) 1958-12-17

Family

ID=9801629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5734/55A Expired GB806124A (en) 1955-02-25 1955-02-25 Improvements in or relating to electric lighting arrangements for indoor illumination

Country Status (1)

Country Link
GB (1) GB806124A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197630A (en) * 1963-04-16 1965-07-27 M D Brown Company Reflector and lens assembly
FR2551179A1 (en) * 1983-08-29 1985-03-01 Canadian Patents Dev LIGHTING PANEL
DE3633976A1 (en) * 1986-04-09 1987-10-29 Wila Leuchten Gmbh Ceiling spotlight with brightening of the surrounding field
EP0281786A1 (en) * 1987-02-27 1988-09-14 Siemens Aktiengesellschaft Infrared emitter system
DE4014802A1 (en) * 1990-03-15 1991-09-26 Hoffmeister Leuchten Kg Ceiling lamp with ring in axially movable housing - for assembly with ring and retaining springs inserted into opening and checked for correctness of seating
WO1994020787A1 (en) * 1993-03-12 1994-09-15 Kurt Blessing Illumination device
GB2316477A (en) * 1995-11-13 1998-02-25 High End Systems Inc Lighting system with beam shape control
US6264344B1 (en) 1998-06-03 2001-07-24 Spaulding Lighting, Inc. Canopy luminaire assembly
US6356391B1 (en) 1999-10-08 2002-03-12 3M Innovative Properties Company Optical film with variable angle prisms
US6447135B1 (en) 1999-10-08 2002-09-10 3M Innovative Properties Company Lightguide having a directly secured reflector and method of making the same
US6845212B2 (en) 1999-10-08 2005-01-18 3M Innovative Properties Company Optical element having programmed optical structures
WO2005010433A1 (en) * 2003-07-24 2005-02-03 Johannes Jungel-Schmid Ambient lighting system
US7046905B1 (en) 1999-10-08 2006-05-16 3M Innovative Properties Company Blacklight with structured surfaces
DE202013101824U1 (en) * 2013-04-26 2014-07-29 Zumtobel Lighting Gmbh Luminaire with adjustable light emission characteristic
IT201600094411A1 (en) * 2016-09-20 2018-03-20 Harcosbei S R L BUILT-IN BUILT-IN LAMP
EP2865939B1 (en) * 2013-10-22 2018-06-27 GEWISS S.p.A. Led lighting device with modular optical system

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197630A (en) * 1963-04-16 1965-07-27 M D Brown Company Reflector and lens assembly
FR2551179A1 (en) * 1983-08-29 1985-03-01 Canadian Patents Dev LIGHTING PANEL
GB2145809A (en) * 1983-08-29 1985-04-03 Canadian Patents Dev Lightning panel
DE3633976A1 (en) * 1986-04-09 1987-10-29 Wila Leuchten Gmbh Ceiling spotlight with brightening of the surrounding field
EP0281786A1 (en) * 1987-02-27 1988-09-14 Siemens Aktiengesellschaft Infrared emitter system
DE4014802A1 (en) * 1990-03-15 1991-09-26 Hoffmeister Leuchten Kg Ceiling lamp with ring in axially movable housing - for assembly with ring and retaining springs inserted into opening and checked for correctness of seating
WO1994020787A1 (en) * 1993-03-12 1994-09-15 Kurt Blessing Illumination device
GB2316477A (en) * 1995-11-13 1998-02-25 High End Systems Inc Lighting system with beam shape control
GB2316477B (en) * 1995-11-13 1998-08-19 High End Systems Inc Lighting system
US6367945B2 (en) 1998-06-03 2002-04-09 Spalding Lighting, Inc. Canopy luminaire assembly
US6264344B1 (en) 1998-06-03 2001-07-24 Spaulding Lighting, Inc. Canopy luminaire assembly
US6447135B1 (en) 1999-10-08 2002-09-10 3M Innovative Properties Company Lightguide having a directly secured reflector and method of making the same
US8588574B2 (en) 1999-10-08 2013-11-19 3M Innovative Properties Company Backlight with structured surfaces
US6560026B2 (en) 1999-10-08 2003-05-06 Mark E. Gardiner Optical film with variable angle prisms
US6707611B2 (en) 1999-10-08 2004-03-16 3M Innovative Properties Company Optical film with variable angle prisms
US6845212B2 (en) 1999-10-08 2005-01-18 3M Innovative Properties Company Optical element having programmed optical structures
US6356391B1 (en) 1999-10-08 2002-03-12 3M Innovative Properties Company Optical film with variable angle prisms
US7046905B1 (en) 1999-10-08 2006-05-16 3M Innovative Properties Company Blacklight with structured surfaces
US7873256B2 (en) 1999-10-08 2011-01-18 3M Innovative Properties Company Backlight with structured surfaces
US7221847B2 (en) 1999-10-08 2007-05-22 3M Innovative Properties Company Optical elements having programmed optical structures
US7217002B2 (en) 2003-07-24 2007-05-15 Johannes Jungel-Schmid Ambient lighting system
WO2005010433A1 (en) * 2003-07-24 2005-02-03 Johannes Jungel-Schmid Ambient lighting system
DE202013101824U1 (en) * 2013-04-26 2014-07-29 Zumtobel Lighting Gmbh Luminaire with adjustable light emission characteristic
EP2796780A1 (en) * 2013-04-26 2014-10-29 Zumtobel Lighting GmbH Luminaire with adjustable light emitting characteristics
EP2865939B1 (en) * 2013-10-22 2018-06-27 GEWISS S.p.A. Led lighting device with modular optical system
IT201600094411A1 (en) * 2016-09-20 2018-03-20 Harcosbei S R L BUILT-IN BUILT-IN LAMP

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