CA2111437A1 - High Aspect Ratio Light Emitter Having High Uniformity and Directionality - Google Patents

High Aspect Ratio Light Emitter Having High Uniformity and Directionality

Info

Publication number
CA2111437A1
CA2111437A1 CA2111437A CA2111437A CA2111437A1 CA 2111437 A1 CA2111437 A1 CA 2111437A1 CA 2111437 A CA2111437 A CA 2111437A CA 2111437 A CA2111437 A CA 2111437A CA 2111437 A1 CA2111437 A1 CA 2111437A1
Authority
CA
Canada
Prior art keywords
light emitter
directionality
aspect ratio
ratio light
partially
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
CA2111437A
Other languages
French (fr)
Other versions
CA2111437C (en
Inventor
Lorne A. Whitehead
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
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
Publication of CA2111437A1 publication Critical patent/CA2111437A1/en
Application granted granted Critical
Publication of CA2111437C publication Critical patent/CA2111437C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and 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
    • 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
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/40—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of hollow light guides
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • 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
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type

Abstract

A light emitter (40) for emitting partially collimated light in one or more selected directions. The light emitter has a longitudinally specularly reflective internal surface (50); and, a light emitting area (48) having an inner portion (60) which is both partially longi-tudinally specular reflective and partially longitudinally transmissive and, a refractive, prismatic outer portion (52).
CA002111437A 1991-06-17 1992-05-26 High aspect ratio light emitter having high uniformity and directionality Expired - Lifetime CA2111437C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/716,684 US5243506A (en) 1991-06-17 1991-06-17 High aspect ratio light emitter having high uniformity and directionality
US716,684 1991-06-17

Publications (2)

Publication Number Publication Date
CA2111437A1 true CA2111437A1 (en) 1992-12-23
CA2111437C CA2111437C (en) 1995-07-18

Family

ID=24879006

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002111437A Expired - Lifetime CA2111437C (en) 1991-06-17 1992-05-26 High aspect ratio light emitter having high uniformity and directionality

Country Status (10)

Country Link
US (1) US5243506A (en)
EP (1) EP0593499B1 (en)
JP (1) JP2711481B2 (en)
AU (1) AU1785792A (en)
CA (1) CA2111437C (en)
DE (1) DE69209838T2 (en)
DK (1) DK0593499T3 (en)
FI (1) FI935681A (en)
NO (1) NO303990B1 (en)
WO (1) WO1992022768A1 (en)

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CA2097109C (en) * 1992-06-01 2000-01-11 Shozo Kokawa Liquid crystal display
US6712481B2 (en) * 1995-06-27 2004-03-30 Solid State Opto Limited Light emitting panel assemblies
US5613751A (en) 1995-06-27 1997-03-25 Lumitex, Inc. Light emitting panel assemblies
US5692822A (en) * 1995-11-29 1997-12-02 Minnesota Mining & Manufacturing Co. Uniform bi-directional dependent line light source via controlled partial reflection
ZA9610900B (en) * 1995-12-27 1997-06-27 Kevin D Miekis Supporting structure for a prism light guide
US5661839A (en) * 1996-03-22 1997-08-26 The University Of British Columbia Light guide employing multilayer optical film
US5832164A (en) * 1996-05-24 1998-11-03 Miekis; Kevin D. Supporting structure for a prism light guide
GB2319877B (en) * 1996-11-29 2000-07-26 Principle Systems Limited Illuminated sign
US6031958A (en) 1997-05-21 2000-02-29 Mcgaffigan; Thomas H. Optical light pipes with laser light appearance
US6024462A (en) * 1997-06-10 2000-02-15 The University Of British Columbia High efficiency high intensity backlighting of graphic displays
US6079844A (en) * 1997-06-10 2000-06-27 The University Of British Columbia High efficiency high intensity backlighting of graphic displays
US5901266A (en) * 1997-09-04 1999-05-04 The University Of British Columbia Uniform light extraction from light guide, independently of light guide length
IT1295414B1 (en) * 1997-10-06 1999-05-12 Da Ma S R L LINEAR LIGHTING DEVICE WITH INTERNALLY PRISMATIZED COEXTRUDED SCREENS
DE19851633A1 (en) * 1998-11-10 2000-05-18 Tobias Hobert Device for forwarding and distributing electromagnetic radiation, in particular visible light
DE19924133A1 (en) * 1999-05-26 2000-11-30 Basler Ag Lamp for producing a line of light with a specifiable intensity distribution along its length comprises reflectors whose position and/or surface curvature is adjustable relative to the light sources of the lamp
CA2407624C (en) 2000-04-25 2008-04-01 Honeywell International Inc. Hollow cavity light guide for the distribution of collimated light to a liquid crystal display
US6481882B1 (en) * 2000-05-04 2002-11-19 3M Innovative Properties Company Light pipe fixture with internal extractor
US6809892B2 (en) * 2000-07-26 2004-10-26 3M Innovative Properties Company Hollow surface illuminator
US6783269B2 (en) * 2000-12-27 2004-08-31 Koninklijke Philips Electronics N.V. Side-emitting rod for use with an LED-based light engine
US7384173B2 (en) * 2004-12-30 2008-06-10 3M Innovative Properties Company Brightness enhancement article
US7591094B2 (en) * 2005-05-31 2009-09-22 The University Of British Columbia Perforated multi-layer optical film luminaire
JP5257654B2 (en) * 2008-03-24 2013-08-07 富士ゼロックス株式会社 Light irradiation body, image forming structure, and image forming apparatus
US8224207B2 (en) 2007-10-12 2012-07-17 Fuji Xerox Co., Ltd. Light irradiation element, image forming structure, and image forming apparatus
US8066405B2 (en) * 2007-10-25 2011-11-29 Simon Jerome H Lumenairs having structurally and electrically integrated arrangements of quasi point light sources, such as LEDs
US8462292B2 (en) * 2008-07-31 2013-06-11 Rambus Delaware Llc Optically transmissive substrates and light emitting assemblies and methods of making same, and methods of displaying images using the optically transmissive substrates and light emitting assemblies
US9657907B2 (en) 2010-12-14 2017-05-23 Bridgelux Inc. Side light LED troffer tube
WO2014070495A1 (en) 2012-10-30 2014-05-08 3M Innovative Properties Company Curved light duct extraction
CN104769355B (en) 2012-10-30 2017-10-20 3M创新有限公司 Rectangular light pipeline is extracted
US9733414B2 (en) 2013-02-08 2017-08-15 Quarkstar Llc Illumination system based on active and passive illumination devices
EP3017242A1 (en) * 2013-05-31 2016-05-11 3M Innovative Properties Company of 3M Center Luminaire for crosswalk
US10302275B2 (en) 2013-06-19 2019-05-28 Bright View Technologies Corporation Microstructure-based diffusers for creating batwing lighting patterns
EP3011372B1 (en) 2013-06-19 2021-12-08 Bright View Technologies Corporation Microstructure-based optical diffuser for creating batwing patterns and method for its manufacture
WO2015013594A1 (en) 2013-07-26 2015-01-29 Bright View Technologies Corporation Shaped microstructure-based optical diffusers
US20160327241A1 (en) * 2015-05-04 2016-11-10 3M Innovative Properties Company Luminaire assembly

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GB713529A (en) * 1951-03-16 1954-08-11 Edward Wasteneys Hall Improvements in or relating to lights for vehicles and devices for preventing dazzletherefrom and assisting in the penetration of fog
US4105293A (en) * 1976-08-25 1978-08-08 Aizenberg Julian Borisovich Lighting installation based on light guide
US4260220A (en) * 1979-06-15 1981-04-07 Canadian Patents And Development Limited Prism light guide having surfaces which are in octature
US4337759A (en) * 1979-10-10 1982-07-06 John M. Popovich Radiant energy concentration by optical total internal reflection
US4335421A (en) * 1980-03-17 1982-06-15 Modia Joseph W Light fixture, light aperture and method of uniformly illuminating an optically diffusive viewing area
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US4805984A (en) * 1985-11-21 1989-02-21 Minnesota Mining And Manufacturing Company Totally internally reflecting light conduit
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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
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US4791540A (en) * 1987-05-26 1988-12-13 Minnesota Mining And Manufacturing Company Light fixture providing normalized output
US4937716A (en) * 1988-05-05 1990-06-26 Tir Systems Ltd Illuminating device having non-absorptive variable transmissivity cover
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Also Published As

Publication number Publication date
WO1992022768A1 (en) 1992-12-23
DE69209838T2 (en) 1996-11-28
CA2111437C (en) 1995-07-18
US5243506A (en) 1993-09-07
FI935681A0 (en) 1993-12-16
NO934663D0 (en) 1993-12-16
NO303990B1 (en) 1998-10-05
DK0593499T3 (en) 1996-05-06
EP0593499A1 (en) 1994-04-27
NO934663L (en) 1993-12-17
FI935681A (en) 1994-02-14
EP0593499B1 (en) 1996-04-10
DE69209838D1 (en) 1996-05-15
AU1785792A (en) 1993-01-12
JPH06507996A (en) 1994-09-08
JP2711481B2 (en) 1998-02-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)
MKEC Expiry (correction)

Effective date: 20121202