DE69939647D1 - Optischer film - Google Patents

Optischer film

Info

Publication number
DE69939647D1
DE69939647D1 DE69939647T DE69939647T DE69939647D1 DE 69939647 D1 DE69939647 D1 DE 69939647D1 DE 69939647 T DE69939647 T DE 69939647T DE 69939647 T DE69939647 T DE 69939647T DE 69939647 D1 DE69939647 D1 DE 69939647D1
Authority
DE
Germany
Prior art keywords
optical film
optical
film
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 - Lifetime
Application number
DE69939647T
Other languages
English (en)
Inventor
Alan B Campbell
Sandford Cobb Jr
Wade D Kretman
Marvin J Niezgocki
Timothy L Hoopman
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
Application granted granted Critical
Publication of DE69939647D1 publication Critical patent/DE69939647D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
DE69939647T 1998-02-18 1999-01-22 Optischer film Expired - Lifetime DE69939647D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2518398A 1998-02-18 1998-02-18
PCT/US1999/001305 WO1999042861A1 (en) 1998-02-18 1999-01-22 Optical film

Publications (1)

Publication Number Publication Date
DE69939647D1 true DE69939647D1 (de) 2008-11-13

Family

ID=21824528

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69939647T Expired - Lifetime DE69939647D1 (de) 1998-02-18 1999-01-22 Optischer film

Country Status (8)

Country Link
US (1) US6354709B1 (de)
EP (2) EP1975649A1 (de)
JP (2) JP4347521B2 (de)
AU (1) AU752774B2 (de)
CA (1) CA2318790C (de)
DE (1) DE69939647D1 (de)
TW (1) TW419599B (de)
WO (1) WO1999042861A1 (de)

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CA2318790A1 (en) 1999-08-26
AU752774B2 (en) 2002-09-26
AU2332899A (en) 1999-09-06
JP2002504698A (ja) 2002-02-12
JP4347521B2 (ja) 2009-10-21
EP1975649A1 (de) 2008-10-01
US6354709B1 (en) 2002-03-12
JP4468472B2 (ja) 2010-05-26
CA2318790C (en) 2004-03-30
WO1999042861A1 (en) 1999-08-26
EP1057049B1 (de) 2008-10-01

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