CA2011338A1 - Lumiere a faible eblouissement - Google Patents

Lumiere a faible eblouissement

Info

Publication number
CA2011338A1
CA2011338A1 CA2011338A CA2011338A CA2011338A1 CA 2011338 A1 CA2011338 A1 CA 2011338A1 CA 2011338 A CA2011338 A CA 2011338A CA 2011338 A CA2011338 A CA 2011338A CA 2011338 A1 CA2011338 A1 CA 2011338A1
Authority
CA
Canada
Prior art keywords
light
low
transparent sheet
glare light
source
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.)
Granted
Application number
CA2011338A
Other languages
English (en)
Other versions
CA2011338C (fr
Inventor
Randall S. Helm
Richard A. Benoit
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.)
Steelcase Inc
Original Assignee
Steelcase Inc
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 Steelcase Inc filed Critical Steelcase Inc
Publication of CA2011338A1 publication Critical patent/CA2011338A1/fr
Application granted granted Critical
Publication of CA2011338C publication Critical patent/CA2011338C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F21V5/02—Refractors for light sources of prismatic shape
    • 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
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • 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
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/402—Lighting for industrial, commercial, recreational or military use for working places
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
CA002011338A 1989-05-05 1990-03-02 Lumiere a faible eblouissement Expired - Fee Related CA2011338C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US348,301 1989-05-05
US07/348,301 US4969075A (en) 1989-05-05 1989-05-05 Low-glare light

Publications (2)

Publication Number Publication Date
CA2011338A1 true CA2011338A1 (fr) 1990-11-05
CA2011338C CA2011338C (fr) 1995-09-19

Family

ID=23367427

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002011338A Expired - Fee Related CA2011338C (fr) 1989-05-05 1990-03-02 Lumiere a faible eblouissement

Country Status (2)

Country Link
US (1) US4969075A (fr)
CA (1) CA2011338C (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5079680A (en) * 1991-06-07 1992-01-07 Reflector Hardware Corporation Undershelf task light fixture
US5440467A (en) * 1994-04-22 1995-08-08 Steelcase Inc. Task light
US5481637A (en) * 1994-11-02 1996-01-02 The University Of British Columbia Hollow light guide for diffuse light
US6062710A (en) * 1998-06-04 2000-05-16 Lighten Up Trading Company, Inc. Light fixture with at least one lens or reflector as image magnifier and a diffuser for reducing glare
EP1085251B1 (fr) * 1999-09-17 2016-12-28 Siteco Beleuchtungstechnik GmbH Luminaire à conducteur de lumière creux avec un dispositif d' extraction de la lumière modulaire
US6755551B2 (en) 2002-02-28 2004-06-29 Steelcase Development Corporation Thin profile task light
US20080101759A1 (en) * 2006-10-26 2008-05-01 K Laser Technology, Inc. Prism matrix with random phase structures
DE102007063335A1 (de) * 2007-12-27 2009-07-02 Herbert Waldmann Gmbh & Co. Kg Leuchte
EP2390557A1 (fr) 2010-05-31 2011-11-30 Koninklijke Philips Electronics N.V. Luminaire
DE102011082424A1 (de) 2011-09-09 2013-03-14 Herbert Waldmann Gmbh & Co Kg Leuchte
US9188733B2 (en) 2013-06-07 2015-11-17 Steelcase Inc. Panel light assembly
US10072816B2 (en) 2013-06-19 2018-09-11 Bright View Technologies Corporation Microstructure-based optical diffusers for creating batwing and other lighting patterns
US10302275B2 (en) 2013-06-19 2019-05-28 Bright View Technologies Corporation Microstructure-based diffusers for creating batwing lighting patterns
EP3014173A4 (fr) 2013-07-26 2017-01-11 Bright View Technologies Corporation Diffuseurs optiques à base de microstructure

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054793A (en) * 1973-08-22 1977-10-18 Sylvan R. Shemitz Associates, Inc. Lighting system
US4233651A (en) * 1978-03-30 1980-11-11 Keene Corporation Work area lighting system
US4242723A (en) * 1979-05-14 1980-12-30 Keene Corporation Low level work area lighting system
US4260220A (en) * 1979-06-15 1981-04-07 Canadian Patents And Development Limited Prism light guide having surfaces which are in octature
JPS5757402A (en) * 1980-09-22 1982-04-06 Toshiba Electric Equip Illuminator
US4615579A (en) * 1983-08-29 1986-10-07 Canadian Patents & Development Ltd. Prism light guide luminaire
US4542449A (en) * 1983-08-29 1985-09-17 Canadian Patents & Development Limited Lighting panel with opposed 45° corrugations
US4562515A (en) * 1984-05-23 1985-12-31 Emerson Electric Co. Calibrated area source task light
DE8504325U1 (de) * 1985-02-13 1985-07-04 Semperlux Gmbh, 1000 Berlin Einrichtung zum Entblenden von großflächigen Leuchtmitteln
US4791540A (en) * 1987-05-26 1988-12-13 Minnesota Mining And Manufacturing Company Light fixture providing normalized output

Also Published As

Publication number Publication date
US4969075A (en) 1990-11-06
CA2011338C (fr) 1995-09-19

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed