JP4347521B2 - 光学フィルム - Google Patents

光学フィルム Download PDF

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Publication number
JP4347521B2
JP4347521B2 JP2000532742A JP2000532742A JP4347521B2 JP 4347521 B2 JP4347521 B2 JP 4347521B2 JP 2000532742 A JP2000532742 A JP 2000532742A JP 2000532742 A JP2000532742 A JP 2000532742A JP 4347521 B2 JP4347521 B2 JP 4347521B2
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JP
Japan
Prior art keywords
light
angle
prism
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
JP2000532742A
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English (en)
Japanese (ja)
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JP2002504698A (ja
Inventor
ビー． キャンベル，アラン
ジュニア． コブ，サンドフォード
ディー クレットマン，ウェイド
ジェイ． ニーズゴッキー，マービン
エル． フープマン，ティモシー
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3M Co
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3M Co
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Publication date
Application filed by 3M Co filed Critical 3M Co
Publication of JP2002504698A publication Critical patent/JP2002504698A/ja
Application granted granted Critical
Publication of JP4347521B2 publication Critical patent/JP4347521B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Polarising Elements (AREA)
JP2000532742A 1998-02-18 1999-01-22 光学フィルム Expired - Lifetime JP4347521B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US2518398A 1998-02-18 1998-02-18
US09/025,183 1998-02-18
PCT/US1999/001305 WO1999042861A1 (en) 1998-02-18 1999-01-22 Optical film

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2008290269A Division JP4468472B2 (ja) 1998-02-18 2008-11-12 光学フィルム

Publications (2)

Publication Number Publication Date
JP2002504698A JP2002504698A (ja) 2002-02-12
JP4347521B2 true JP4347521B2 (ja) 2009-10-21

Family

ID=21824528

Family Applications (2)

Application Number Title Priority Date Filing Date
JP2000532742A Expired - Lifetime JP4347521B2 (ja) 1998-02-18 1999-01-22 光学フィルム
JP2008290269A Expired - Lifetime JP4468472B2 (ja) 1998-02-18 2008-11-12 光学フィルム

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP2008290269A Expired - Lifetime JP4468472B2 (ja) 1998-02-18 2008-11-12 光学フィルム

Country Status (8)

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

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US6354709B1 (en) 2002-03-12
WO1999042861A1 (en) 1999-08-26

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