JP4573946B2 - 光拡散性シート - Google Patents

光拡散性シート Download PDF

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Publication number
JP4573946B2
JP4573946B2 JP2000143466A JP2000143466A JP4573946B2 JP 4573946 B2 JP4573946 B2 JP 4573946B2 JP 2000143466 A JP2000143466 A JP 2000143466A JP 2000143466 A JP2000143466 A JP 2000143466A JP 4573946 B2 JP4573946 B2 JP 4573946B2
Authority
JP
Japan
Prior art keywords
light
light diffusing
sheet
resin particles
diffusing sheet
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
JP2000143466A
Other languages
English (en)
Japanese (ja)
Other versions
JP2001324608A (ja
JP2001324608A5 (enExample
Inventor
剛久 木村
輝雄 大沼
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.)
Kimoto Co Ltd
Original Assignee
Kimoto Co Ltd
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 Kimoto Co Ltd filed Critical Kimoto Co Ltd
Priority to JP2000143466A priority Critical patent/JP4573946B2/ja
Priority to US09/854,608 priority patent/US6771335B2/en
Publication of JP2001324608A publication Critical patent/JP2001324608A/ja
Publication of JP2001324608A5 publication Critical patent/JP2001324608A5/ja
Application granted granted Critical
Publication of JP4573946B2 publication Critical patent/JP4573946B2/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
    • 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
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • 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
    • G02B6/0065—Manufacturing aspects; Material aspects
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
JP2000143466A 2000-05-16 2000-05-16 光拡散性シート Expired - Lifetime JP4573946B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000143466A JP4573946B2 (ja) 2000-05-16 2000-05-16 光拡散性シート
US09/854,608 US6771335B2 (en) 2000-05-16 2001-05-15 Light diffusion sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000143466A JP4573946B2 (ja) 2000-05-16 2000-05-16 光拡散性シート

Publications (3)

Publication Number Publication Date
JP2001324608A JP2001324608A (ja) 2001-11-22
JP2001324608A5 JP2001324608A5 (enExample) 2007-07-12
JP4573946B2 true JP4573946B2 (ja) 2010-11-04

Family

ID=18650281

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000143466A Expired - Lifetime JP4573946B2 (ja) 2000-05-16 2000-05-16 光拡散性シート

Country Status (2)

Country Link
US (1) US6771335B2 (enExample)
JP (1) JP4573946B2 (enExample)

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Also Published As

Publication number Publication date
JP2001324608A (ja) 2001-11-22
US6771335B2 (en) 2004-08-03
US20020001055A1 (en) 2002-01-03

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