CA2026867A1 - Light fixture - Google Patents

Light fixture

Info

Publication number
CA2026867A1
CA2026867A1 CA2026867A CA2026867A CA2026867A1 CA 2026867 A1 CA2026867 A1 CA 2026867A1 CA 2026867 A CA2026867 A CA 2026867A CA 2026867 A CA2026867 A CA 2026867A CA 2026867 A1 CA2026867 A1 CA 2026867A1
Authority
CA
Canada
Prior art keywords
housing
light
light fixture
perimeter
section
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
CA2026867A
Other languages
French (fr)
Other versions
CA2026867C (en
Inventor
Harry B. Anderson
Sanford Cobb, Jr.
David L. Wortman
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of CA2026867A1 publication Critical patent/CA2026867A1/en
Application granted granted Critical
Publication of CA2026867C publication Critical patent/CA2026867C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0096—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the lights guides being of the hollow type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00—Illumination
    • Y10S362/812—Signs

Abstract

A light fixture has a housing having an axis and a light source for directing light into the housing along the housing axis. A first section of the housing occupies a first portion of the housing's perimeter and includes a light guide material. A second section of the housing occupies a second portion of the housing's perimeter and includes light extraction structures and a Fresnel lens for beam shaping.
CA002026867A 1989-10-30 1990-10-03 Light fixture Expired - Fee Related CA2026867C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/429,178 US5095415A (en) 1989-10-30 1989-10-30 Light fixture for externally illuminated sign
US07/429,178 1989-10-30

Publications (2)

Publication Number Publication Date
CA2026867A1 true CA2026867A1 (en) 1991-05-01
CA2026867C CA2026867C (en) 2000-12-12

Family

ID=23702139

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002026867A Expired - Fee Related CA2026867C (en) 1989-10-30 1990-10-03 Light fixture

Country Status (7)

Country Link
US (1) US5095415A (en)
EP (1) EP0426433B1 (en)
JP (5) JP3093778B2 (en)
KR (1) KR0150455B1 (en)
AU (1) AU644609B2 (en)
CA (1) CA2026867C (en)
DE (1) DE69017353T2 (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237449A (en) * 1991-01-29 1993-08-17 Nelson Optics Company, Inc. Biased lenticular sign system
US5309544A (en) * 1992-03-31 1994-05-03 Minnesota Mining And Manufacturing Company Light pipe having optimized cross-section
EP0677160B1 (en) * 1992-12-31 1997-07-16 Minnesota Mining And Manufacturing Company Pole light having a programmable footprint
US6169839B1 (en) 1993-04-30 2001-01-02 Walter A. Johanson Light distribution systems and illumination devices
US5483119A (en) * 1993-06-15 1996-01-09 Johanson; Walter A. Illumination devices and methods of forming same
US5784517A (en) * 1993-04-30 1998-07-21 Johanson; Walter A. Illumination devices and methods of forming same
US5475785A (en) * 1993-04-30 1995-12-12 Johanson; Walter A. Illumination devices and methods of forming same
US5363470A (en) * 1993-07-08 1994-11-08 Minnesota Mining And Manufacturing Company Displacing an optical lighting film's linear array of grooves to facilitate emission of light
US5863115A (en) * 1994-05-03 1999-01-26 Simon; Jerome H. Decorative illumination system
US5591527A (en) * 1994-11-02 1997-01-07 Minnesota Mining And Manufacturing Company Optical security articles and methods for making same
US5700077A (en) * 1995-03-23 1997-12-23 Minnesota Mining And Manufacturing Company Line light source including fluorescent colorant
US6656566B1 (en) 1997-04-15 2003-12-02 3M Innovative Properties Company Retroreflective luminescent articles
US6031958A (en) * 1997-05-21 2000-02-29 Mcgaffigan; Thomas H. Optical light pipes with laser light appearance
US6014489A (en) * 1997-06-13 2000-01-11 Johanson; Walter A. Light distributing tubes and methods of forming same
US5976686A (en) * 1997-10-24 1999-11-02 3M Innovative Properties Company Diffuse reflective articles
US6497946B1 (en) 1997-10-24 2002-12-24 3M Innovative Properties Company Diffuse reflective articles
EP1064497A1 (en) * 1999-01-14 2001-01-03 Minnesota Mining And Manufacturing Company A luminaire
US6796677B1 (en) * 1999-07-23 2004-09-28 Everbrite, Inc. High intensity lamp
US20040005451A1 (en) * 1999-08-03 2004-01-08 Minnesota Mining And Manufacturing Company Diffuse reflective articles
US6356391B1 (en) 1999-10-08 2002-03-12 3M Innovative Properties Company Optical film with variable angle prisms
KR100373208B1 (en) * 1999-10-13 2003-02-25 주식회사 엘지화학 Total reflection film
EP1236009A2 (en) 1999-11-30 2002-09-04 Reflexite Corporation Luminaire system
US6511204B2 (en) 1999-12-16 2003-01-28 3M Innovative Properties Company Light tube
US6612729B1 (en) 2000-03-16 2003-09-02 3M Innovative Properties Company Illumination device
US6621973B1 (en) 2000-03-16 2003-09-16 3M Innovative Properties Company Light guide with protective outer sleeve
DE10211967B4 (en) 2002-03-19 2006-08-31 Preh Gmbh backlighting
KR100837657B1 (en) * 2006-12-01 2008-06-13 엘지전자 주식회사 Light source apparatus using a metal light guide
TW201100716A (en) * 2009-06-19 2011-01-01 Up Key Trading Co Ltd Secondary optical lamp shade
KR102022285B1 (en) * 2013-01-04 2019-09-18 삼성전자주식회사 Speaker
CN105637284B (en) 2013-11-11 2017-05-17 飞利浦灯具控股公司 Luminaire
CN104456313A (en) * 2014-12-03 2015-03-25 合肥京东方显示光源有限公司 Backlight module and display device

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US736535A (en) * 1900-04-14 1903-08-18 Otis A Mygatt Shade for artificial lights.
US1682490A (en) * 1925-10-03 1928-08-28 Sigmund B Dressler Fresnel-type lens
FR775225A (en) * 1933-09-19 1934-12-21 Holophane Sa Device for lighting elongated diffusing surfaces
US2115178A (en) * 1934-07-28 1938-04-26 Holophane Co Inc Luminaire having means for reducing the apparent size of the light source
US2151801A (en) * 1936-12-17 1939-03-28 Holophane Co Inc Vaporproof luminaire
US2818500A (en) * 1953-07-03 1957-12-31 Holophane Co Inc Prismatic reflectors
US3223833A (en) * 1964-12-15 1965-12-14 Gen Time Corp Illuminated dial
DE2459327B2 (en) * 1974-12-16 1980-07-31 Nova-Lux Gmbh, 5000 Koeln Luminaire with light distribution disc
DE2651738A1 (en) * 1976-11-12 1978-05-18 Isoliermaterial Ag Solar energy collector in rectangular housing - with pressed glass cover lens-shaped outside and faceted on the underside
US4260220A (en) * 1979-06-15 1981-04-07 Canadian Patents And Development Limited Prism light guide having surfaces which are in octature
US4488208A (en) * 1982-08-20 1984-12-11 Union-Reed Corporation Low brightness lens for circular fluorescent lamps
US4750798A (en) * 1983-08-29 1988-06-14 Canadian Patents And Developement Limited Prism light guide luminaire
US4615579A (en) * 1983-08-29 1986-10-07 Canadian Patents & Development Ltd. Prism light guide luminaire
JP2823156B2 (en) * 1985-07-23 1998-11-11 キヤノン株式会社 Display device
CA1279783C (en) * 1985-11-21 1991-02-05 Minnesota Mining And Manufacturing Company Totally internally reflecting thin, flexible film
CA1268969A (en) * 1986-01-15 1990-05-15 Sanford Cobb, Jr. Totally internally reflecting light conduit
US4850665A (en) * 1987-02-20 1989-07-25 Minnesota Mining And Manufacturing Company Method and apparatus for controlled emission of light from prism light guide
US4787708A (en) * 1987-05-08 1988-11-29 Tir Systems Ltd. Apparatus for continuously controlled emission of light from prism light guide
CA1316159C (en) * 1987-05-08 1993-04-13 Sanford Cobb, Jr. High aspect ratio light fixture and film for use therein
US4834495A (en) * 1987-05-08 1989-05-30 Minnesota Mining And Manufacturing Company Collapsible light pipe
US4941723A (en) * 1988-03-18 1990-07-17 Dainippon Screen Mfg. Co., Ltd. Rod shaped linear light diffusion apparatus

Also Published As

Publication number Publication date
JPH03208204A (en) 1991-09-11
KR0150455B1 (en) 1998-10-15
EP0426433A2 (en) 1991-05-08
EP0426433B1 (en) 1995-03-01
DE69017353D1 (en) 1995-04-06
DE69017353T2 (en) 1995-10-26
JP3093778B2 (en) 2000-10-03
KR910008631A (en) 1991-05-31
JP2002184221A (en) 2002-06-28
JPH11339523A (en) 1999-12-10
EP0426433A3 (en) 1991-08-28
JP2004335482A (en) 2004-11-25
AU6481190A (en) 1991-05-02
US5095415A (en) 1992-03-10
AU644609B2 (en) 1993-12-16
JPH11339522A (en) 1999-12-10
CA2026867C (en) 2000-12-12
JP3331562B2 (en) 2002-10-07

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed