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EP0364228A3 - Light fixture - Google Patents

Light fixture Download PDF

Info

Publication number
EP0364228A3
EP0364228A3 EP89310375A EP89310375A EP0364228A3 EP 0364228 A3 EP0364228 A3 EP 0364228A3 EP 89310375 A EP89310375 A EP 89310375A EP 89310375 A EP89310375 A EP 89310375A EP 0364228 A3 EP0364228 A3 EP 0364228A3
Authority
EP
European Patent Office
Prior art keywords
light
light fixture
collimation
axis
prisms
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.)
Withdrawn
Application number
EP89310375A
Other languages
German (de)
French (fr)
Other versions
EP0364228A2 (en
Inventor
Jeffrey J. C/O Minnesota Mining And Melby
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 EP0364228A2 publication Critical patent/EP0364228A2/en
Publication of EP0364228A3 publication Critical patent/EP0364228A3/en
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A light fixture has a source (16) of partially collimated light for emitting light having an axis of collimation. A structured surface (22') has a plurality of prisms that are rendered reflective for reflecting light from the light source out of the cavity. The peaks (24) of the prisms define a surface at least a portion of which makes an acute angle with the axis of collimation.
EP89310375A 1988-10-11 1989-10-11 Light fixture Withdrawn EP0364228A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25578488A 1988-10-11 1988-10-11
US255784 1988-10-11

Publications (2)

Publication Number Publication Date
EP0364228A2 EP0364228A2 (en) 1990-04-18
EP0364228A3 true EP0364228A3 (en) 1990-07-18

Family

ID=22969851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89310375A Withdrawn EP0364228A3 (en) 1988-10-11 1989-10-11 Light fixture

Country Status (5)

Country Link
EP (1) EP0364228A3 (en)
JP (1) JPH02176692A (en)
AU (1) AU633845B2 (en)
CA (1) CA1321988C (en)
MX (1) MX173264B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5365412A (en) * 1993-01-07 1994-11-15 Ford Motor Company Low profile illuminator
US5434754A (en) * 1993-12-27 1995-07-18 Ford Motor Company Light manifold
IT1281366B1 (en) * 1995-09-27 1998-02-18 Carello Spa LIGHTING DEVICE POSSIBLE WITH REDUCED THICKNESS, IN PARTICULAR HEADLAMP OR HEADLIGHT FOR VEHICLES
JP3574365B2 (en) 1999-05-28 2004-10-06 ユニベルシテ・ド・リエージュ Illumination device, its use and manufacturing method
JP2001345008A (en) * 2000-05-31 2001-12-14 Nippon Leiz Co Ltd Surface light source device
DE10064703B4 (en) * 2000-12-22 2012-04-12 Koninklijke Philips Electronics N.V. Sandwich-type plate element
JP3803062B2 (en) * 2001-12-27 2006-08-02 矢崎総業株式会社 Vehicle indicating device
US7473019B2 (en) 2005-09-29 2009-01-06 Osram Opto Semiconductors Gmbh Lighting apparatus
NL1030161C2 (en) 2005-10-11 2007-04-12 Matthijs Dirk Meulenbelt Presentation device.
JP2010506348A (en) * 2006-10-19 2010-02-25 パナソニック株式会社 LIGHT EMITTING DEVICE AND DISPLAY DEVICE AND LIGHTING DEVICE USING THE SAME
CN101932875B (en) * 2008-08-26 2013-01-09 潘定国 Circular light-reflecting plate with triangular oriented prisms having identical cross sections and circular plate lamp made therefrom
WO2011134164A1 (en) * 2010-04-30 2011-11-03 Pan Dingguo Light guide plate with micro prisms, manufacture methode thereof and plate-shape lamp and plate-shape lamp fixture made thereby
JP4865082B1 (en) * 2010-11-16 2012-02-01 株式会社東芝 Liquid crystal display device and backlight module
DE102012012621A1 (en) * 2012-06-26 2014-01-02 Bartenbach Holding Gmbh lighting device
DE102012012649A1 (en) * 2012-06-26 2014-01-16 Bartenbach Holding Gmbh lighting device
WO2014155281A1 (en) * 2013-03-26 2014-10-02 Koninklijke Philips N.V. Lighting device and luminaire
DE102016117685A1 (en) 2016-09-20 2018-03-22 HELLA GmbH & Co. KGaA Lighting device for vehicles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580461A (en) * 1968-07-11 1969-09-05
WO1982003676A1 (en) * 1981-04-20 1982-10-28 Masataka Negishi Photoimage control device
GB2172986A (en) * 1985-02-22 1986-10-01 Sharp Kk Lighting apparatus
WO1988007647A1 (en) * 1987-03-24 1988-10-06 Minnesota Mining And Manufacturing Company Reflective film

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1580461A (en) * 1968-07-11 1969-09-05
WO1982003676A1 (en) * 1981-04-20 1982-10-28 Masataka Negishi Photoimage control device
GB2172986A (en) * 1985-02-22 1986-10-01 Sharp Kk Lighting apparatus
WO1988007647A1 (en) * 1987-03-24 1988-10-06 Minnesota Mining And Manufacturing Company Reflective film

Also Published As

Publication number Publication date
JPH02176692A (en) 1990-07-09
CA1321988C (en) 1993-09-07
EP0364228A2 (en) 1990-04-18
AU4158889A (en) 1990-04-26
AU633845B2 (en) 1993-02-11
MX173264B (en) 1994-02-14

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