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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    • 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)
  • Light Guides In General And Applications Therefor (AREA)
  • Liquid Crystal (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 (enExample)
EP (2) EP1975649A1 (enExample)
JP (2) JP4347521B2 (enExample)
AU (1) AU752774B2 (enExample)
CA (1) CA2318790C (enExample)
DE (1) DE69939647D1 (enExample)
TW (1) TW419599B (enExample)
WO (1) WO1999042861A1 (enExample)

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WO1999042861A1 (en) 1999-08-26
AU752774B2 (en) 2002-09-26
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EP1057049B1 (en) 2008-10-01
DE69939647D1 (de) 2008-11-13

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