JP6001545B2 - ナノ空隙ポリマー層を組み込んだ広帯域半鏡面ミラーフィルム - Google Patents

ナノ空隙ポリマー層を組み込んだ広帯域半鏡面ミラーフィルム Download PDF

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Publication number
JP6001545B2
JP6001545B2 JP2013534964A JP2013534964A JP6001545B2 JP 6001545 B2 JP6001545 B2 JP 6001545B2 JP 2013534964 A JP2013534964 A JP 2013534964A JP 2013534964 A JP2013534964 A JP 2013534964A JP 6001545 B2 JP6001545 B2 JP 6001545B2
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layer
film
light
refractive index
particles
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JP2013545131A5 (enExample
JP2013545131A (ja
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ディー．コッギオ ウィリアム
ディー．コッギオ ウィリアム
ビー．ブラック ウィリアム
ビー．ブラック ウィリアム
エフ．ウェーバー マイケル
エフ．ウェーバー マイケル
フイウェン タイ
フイウェン タイ
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3M Innovative Properties Co
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/285—Interference filters comprising deposited thin solid films
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • 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
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • 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
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0247—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of voids or pores
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
    • G02B5/0825—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only
    • G02B5/0841—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only comprising organic materials, e.g. polymers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Laminated Bodies (AREA)
  • Optical Filters (AREA)
JP2013534964A 2010-10-20 2011-10-14 ナノ空隙ポリマー層を組み込んだ広帯域半鏡面ミラーフィルム Active JP6001545B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US40514110P 2010-10-20 2010-10-20
US61/405,141 2010-10-20
PCT/US2011/056250 WO2012054318A1 (en) 2010-10-20 2011-10-14 Wide band semi-specular mirror film incorporating nanovoided polymeric layer

Publications (3)

Publication Number Publication Date
JP2013545131A JP2013545131A (ja) 2013-12-19
JP2013545131A5 JP2013545131A5 (enExample) 2014-12-04
JP6001545B2 true JP6001545B2 (ja) 2016-10-05

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JP2013534964A Active JP6001545B2 (ja) 2010-10-20 2011-10-14 ナノ空隙ポリマー層を組み込んだ広帯域半鏡面ミラーフィルム

Country Status (7)

Country Link
US (2) US9995861B2 (enExample)
EP (1) EP2630527A1 (enExample)
JP (1) JP6001545B2 (enExample)
KR (1) KR101926204B1 (enExample)
CN (1) CN103168259B (enExample)
TW (1) TWI531820B (enExample)
WO (1) WO2012054318A1 (enExample)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102576119B (zh) 2009-10-24 2014-03-26 3M创新有限公司 光源和采用所述光源的显示系统
WO2011071728A1 (en) 2009-12-08 2011-06-16 3M Innovative Properties Company Optical constructions incorporating a light guide and low refrative index films
KR20130092971A (ko) 2010-04-14 2013-08-21 쓰리엠 이노베이티브 프로퍼티즈 컴파니 패턴화된 경사 중합체 필름 및 방법
TWI534458B (zh) 2010-10-20 2016-05-21 ３Ｍ新設資產公司 經保護之低折射率光學元件
WO2012054320A1 (en) * 2010-10-20 2012-04-26 3M Innovative Properties Company Optically diffuse low refractive index element
TWI620774B (zh) * 2013-03-25 2018-04-11 荷蘭Ｔｎｏ自然科學組織公司 奈米複合物，其製造方法，用於電子裝置之障壁結構及含其之ｏｌｅｄ
WO2015048624A1 (en) 2013-09-30 2015-04-02 3M Innovative Properties Company Polymeric multilayer optical film
WO2015100064A1 (en) 2013-12-23 2015-07-02 3M Innovative Properties Company Luminaire with semi-specular reflector
JP2017508250A (ja) 2014-02-24 2017-03-23 スリーエム イノベイティブ プロパティズ カンパニー 遠隔ダウンコンバータを含む光学デバイス
US10161593B2 (en) 2014-02-25 2018-12-25 3M Innovative Properties Company Solid state lighting device with virtual filament(s)
US9046637B1 (en) 2014-02-25 2015-06-02 3M Innovative Properties Company Tubular lighting systems with inner and outer structured surfaces
JP6459185B2 (ja) * 2014-02-27 2019-01-30 株式会社リコー 光源装置、および、投射装置
US9823395B2 (en) * 2014-10-17 2017-11-21 3M Innovative Properties Company Multilayer optical film having overlapping harmonics
EP4002006A1 (en) 2014-12-31 2022-05-25 Dolby Laboratories Licensing Corporation Improved integration rod assemblies for image projectors
US9726791B2 (en) * 2015-04-14 2017-08-08 Face International Corporation Systems and methods for producing objects incorporating selectably active electromagnetic energy filtering layers and coatings
CN108291985B (zh) 2015-07-15 2021-04-13 科勒克斯有限责任公司 用于光学扩展感知的反射照明系统
WO2017008821A1 (en) * 2015-07-15 2017-01-19 Coelux S.R.L. Chromatic reflective unit
CN111856634B (zh) 2015-12-18 2022-08-09 3M创新有限公司 宽带可见光反射器
JP2019523442A (ja) 2016-07-13 2019-08-22 スリーエム イノベイティブ プロパティズ カンパニー 光学フィルム
CN109964154A (zh) * 2016-10-21 2019-07-02 沙特基础工业全球技术公司 具有增强的提取性能的光散射膜
WO2018204648A1 (en) * 2017-05-05 2018-11-08 3M Innovative Properties Company Display devices containing polymeric films
WO2019021222A1 (en) * 2017-07-26 2019-01-31 3M Innovative Properties Company OPTICAL CAMOUFLAGE FILTER
KR20190049419A (ko) * 2017-11-01 2019-05-09 삼성에스디아이 주식회사 명암비 개선 광학 필름, 이를 포함하는 편광판 및 이를 포함하는 액정표시장치
JP2021504761A (ja) 2017-12-01 2021-02-15 スリーエム イノベイティブ プロパティズ カンパニー 均一な左帯域端を有する薄い多層反射体
CN111712936B (zh) * 2017-12-22 2023-10-20 亮锐有限责任公司 对光散射进行调谐的多孔微米尺寸颗粒
US10761246B2 (en) 2017-12-22 2020-09-01 Lumileds Llc Light emitting semiconductor device having polymer-filled sub-micron pores in porous structure to tune light scattering
US20210231844A1 (en) * 2018-05-02 2021-07-29 3M Innovative Properties Company Multilayer reflector
US11103892B1 (en) * 2018-09-25 2021-08-31 Facebook Technologies, Llc Initiated chemical vapor deposition method for forming nanovoided polymers
US11233189B2 (en) 2018-12-11 2022-01-25 Facebook Technologies, Llc Nanovoided tunable birefringence
WO2020138636A1 (ko) * 2018-12-26 2020-07-02 엘지전자 주식회사 전자 기기
US11768145B2 (en) 2019-07-26 2023-09-26 3M Innovative Properties Company Porous fluid sensor
CN114746778B (zh) 2019-11-25 2024-06-14 爱斯产品创造有限公司 滤光器及其方法
IT202000008113A1 (it) * 2020-04-16 2021-10-16 Coelux Srl Unità in riflessione di luce a effetto cromatico
JP2023523765A (ja) 2020-05-01 2023-06-07 スリーエム イノベイティブ プロパティズ カンパニー 反射光学メタ表面フィルム
US20240199842A1 (en) * 2021-03-30 2024-06-20 Asahi Rubber Inc. Ultraviolet reflective material, method for producing same, and raw material composition therefor
CN113954453B (zh) * 2021-12-07 2022-09-23 中南大学 一种彩色双层辐射制冷膜及其制备方法
CN114624921B (zh) * 2022-03-11 2023-08-01 纳晶科技股份有限公司 光学板及含其的显示装置、量子点光学板的制备方法
US20230333293A1 (en) * 2022-04-15 2023-10-19 Precision Converting Technologies, LLC Optical security feature
CN115090879A (zh) * 2022-07-06 2022-09-23 阳光氢能科技有限公司 一种pem水电解池阳极多孔扩散层及其制备方法和应用
US20240026103A1 (en) * 2022-07-25 2024-01-25 Viavi Solutions Inc. Article including conformal optical thin layers
CN118684914B (zh) * 2024-06-19 2025-09-30 广东工业大学 一种具有前向散射结构色的力致变色光子晶体薄膜及其制备方法和应用

Family Cites Families (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801185A (en) 1952-05-16 1957-07-30 Du Pont Silica hydrosol powder
US2736721A (en) 1952-10-08 1956-02-28 Optionally
US3610729A (en) 1969-06-18 1971-10-05 Polaroid Corp Multilayered light polarizer
US4446305A (en) 1981-03-02 1984-05-01 Polaroid Corporation Optical device including birefringent polymer
US4379201A (en) 1981-03-30 1983-04-05 Minnesota Mining And Manufacturing Company Multiacrylate cross-linking agents in pressure-sensitive photoadhesives
US4554324A (en) 1982-09-16 1985-11-19 Minnesota Mining And Manufacturing Co. Acrylate copolymer pressure-sensitive adhesive composition and sheet materials coated therewith
US4522958A (en) 1983-09-06 1985-06-11 Ppg Industries, Inc. High-solids coating composition for improved rheology control containing chemically modified inorganic microparticles
US4737559A (en) 1986-05-19 1988-04-12 Minnesota Mining And Manufacturing Co. Pressure-sensitive adhesive crosslinked by copolymerizable aromatic ketone monomers
US5214119A (en) 1986-06-20 1993-05-25 Minnesota Mining And Manufacturing Company Block copolymer, method of making the same, dimaine precursors of the same, method of making such diamines and end products comprising the block copolymer
US5486949A (en) 1989-06-20 1996-01-23 The Dow Chemical Company Birefringent interference polarizer
US5506279A (en) 1993-10-13 1996-04-09 Minnesota Mining And Manufacturing Company Acrylamido functional disubstituted acetyl aryl ketone photoinitiators
US5882774A (en) 1993-12-21 1999-03-16 Minnesota Mining And Manufacturing Company Optical film
KR100468560B1 (ko) 1995-06-26 2005-08-04 미네소타 마이닝 앤드 매뉴팩춰링 캄파니 추가의코팅또는층을갖는다층중합체필름
US6355759B1 (en) 1996-04-25 2002-03-12 3M Innovative Properties Company Polydiorganosiloxane polyurea segmented copolymers and a process for making same
US6210858B1 (en) * 1997-04-04 2001-04-03 Fuji Photo Film Co., Ltd. Anti-reflection film and display device using the same
US6179949B1 (en) 1997-04-18 2001-01-30 Swisscab S.A. Method for manufacturing a drip irrigation tube and dripper unit therein
US6083856A (en) 1997-12-01 2000-07-04 3M Innovative Properties Company Acrylate copolymeric fibers
US6157490A (en) 1998-01-13 2000-12-05 3M Innovative Properties Company Optical film with sharpened bandedge
US6531230B1 (en) * 1998-01-13 2003-03-11 3M Innovative Properties Company Color shifting film
US6808658B2 (en) 1998-01-13 2004-10-26 3M Innovative Properties Company Method for making texture multilayer optical films
US6720387B1 (en) 1998-02-18 2004-04-13 3M Innovative Properties Company Hot-melt adhesive compositions comprising acidic polymer and basic polymer blends
US6208466B1 (en) * 1998-11-25 2001-03-27 3M Innovative Properties Company Multilayer reflector with selective transmission
JP5046456B2 (ja) 1999-09-20 2012-10-10 スリーエム イノベイティブ プロパティズ カンパニー 粒子含有層を少なくとも１つ有する光学フィルム
US6569521B1 (en) 2000-07-06 2003-05-27 3M Innovative Properties Company Stretch releasing pressure sensitive adhesive tape and articles
NL1016779C2 (nl) 2000-12-02 2002-06-04 Cornelis Johannes Maria V Rijn Matrijs, werkwijze voor het vervaardigen van precisieproducten met behulp van een matrijs, alsmede precisieproducten, in het bijzonder microzeven en membraanfilters, vervaardigd met een dergelijke matrijs.
US7090922B2 (en) 2001-12-18 2006-08-15 3M Innovative Properties Company Silicone priming compositions, articles, and methods
AU2003213290A1 (en) 2002-02-28 2003-09-16 3M Innovative Properties Company Compound polarization beam splitters
US6958860B2 (en) * 2002-10-07 2005-10-25 Eastman Kodak Company Voided polymer film containing layered particulates
US7157839B2 (en) * 2003-01-27 2007-01-02 3M Innovative Properties Company Phosphor based light sources utilizing total internal reflection
US7361474B2 (en) 2003-02-24 2008-04-22 United States Of America As Represented By The Department Of Veterans Affairs Serum macrophage migration inhibitory factor (MIF) as marker for prostate cancer
US7255920B2 (en) 2004-07-29 2007-08-14 3M Innovative Properties Company (Meth)acrylate block copolymer pressure sensitive adhesives
JP4238792B2 (ja) 2004-08-04 2009-03-18 ソニー株式会社 光拡散シート及びその製造方法、並びにスクリーン
JP2006058453A (ja) * 2004-08-18 2006-03-02 Sony Corp 低屈折率光学膜用塗料、光学多層膜及び反射型スクリーン
US20060057367A1 (en) 2004-09-14 2006-03-16 Sherman Audrey A Optical film
US20060290845A1 (en) * 2005-06-24 2006-12-28 Hebrink Timothy J Polarization sensitive illumination element and system using same
US20060290843A1 (en) 2005-06-24 2006-12-28 Epstein Kenneth A Illumination element and system using same
US20090267270A1 (en) 2005-09-20 2009-10-29 Konica Minolta Opto, Inc. Process for producing film with concavo-convex pattern
JP5048954B2 (ja) 2006-02-27 2012-10-17 帝人株式会社 反射シート
US20080037127A1 (en) 2006-03-31 2008-02-14 3M Innovative Properties Company Wide angle mirror system
JP2009229471A (ja) * 2006-07-12 2009-10-08 Sharp Corp 光学部品、表示装置用照明装置および表示装置
EP2047302A1 (de) 2006-07-28 2009-04-15 ILFORD Imaging Switzerland GmbH Flexible materialien fuer optische anwendungen
US20080080055A1 (en) * 2006-09-29 2008-04-03 Edwin James Lightfoot Diffuse reflector comprising nonwoven sheet with binder layer comprising binder and scatterer of visible light
EP1962110A1 (en) * 2007-02-14 2008-08-27 Sony Corporation Anti-glare film, method for manufacturing the same, and display device using the same
EP2160644B1 (en) 2007-05-20 2019-05-01 3M Innovative Properties Company Semi-specular components in hollow cavity light recycling backlights
TW200909943A (en) * 2007-05-21 2009-03-01 Rohm & Haas Denmark Finance As Thin film bulk and surface diffuser
CN201041589Y (zh) 2007-05-21 2008-03-26 致和光电股份有限公司 光学膜片
JP2009098615A (ja) 2007-06-08 2009-05-07 Hitachi Maxell Ltd 光学調製部材、それを用いた照明装置及び液晶表示装置
US20090105437A1 (en) 2007-10-19 2009-04-23 3M Innovative Properties Company High refractive index pressure-sensitive adhesives
CN101910348B (zh) 2007-10-30 2013-07-03 3M创新有限公司 高折射率粘合剂
US20090114683A1 (en) 2007-11-05 2009-05-07 Lee-Wei Chou Automatic continuous sprayer with energy storage element and related method thereof
CN101925664B (zh) 2007-12-27 2013-05-29 3M创新有限公司 脲基压敏粘合剂
EP2231808A4 (en) 2008-01-11 2014-11-05 3M Innovative Properties Co THROUGH EXPANSION SOLVENT OPTICALLY FLIP-RESISTANT ADHESIVE
JP2010008916A (ja) * 2008-06-30 2010-01-14 Oji Paper Co Ltd 光拡散体およびバックライトユニット
TW201003234A (en) 2008-07-10 2010-01-16 Glory Sun Opto Electronics Corp Composite optical film and preparation method thereof
JP5720247B2 (ja) 2008-10-17 2015-05-20 日立化成株式会社 低屈折率膜及びその製造方法、反射防止膜及びその製造方法、低屈折率膜用コーティング液セット、微粒子積層薄膜付き基材及びその製造方法、並びに光学部材
JP2010230816A (ja) 2009-03-26 2010-10-14 Nippon Zeon Co Ltd 光学部材及び液晶表示装置
JP5671003B2 (ja) 2009-04-15 2015-02-18 スリーエム イノベイティブ プロパティズ カンパニー ナノ中空物品用プロセス及び装置
US20120021134A1 (en) 2009-04-15 2012-01-26 3M Innovative Properties Company Process and apparatus for coating with reduced defects
CN102449508B (zh) 2009-04-15 2014-12-17 3M创新有限公司 光学膜
CN102427935A (zh) 2009-04-15 2012-04-25 3M创新有限公司 包括低折射率涂层的回射片材
US8534849B2 (en) 2009-04-15 2013-09-17 3M Innovative Properties Company Retroreflecting optical construction
TWI605276B (zh) 2009-04-15 2017-11-11 ３Ｍ新設資產公司 光學結構及包含該光學結構之顯示系統
WO2010120871A1 (en) 2009-04-15 2010-10-21 3M Innovative Properties Company Optical film for preventing optical coupling
US8891038B2 (en) 2009-04-15 2014-11-18 3M Innovative Properties Company Lightguide with optical film containing voids and blacklight for display system
CN102712140B (zh) 2010-01-13 2015-06-03 3M创新有限公司 具有微结构化低折射率纳米空隙层的光学膜及其方法

Also Published As

Publication number Publication date
KR20130128395A (ko) 2013-11-26
CN103168259A (zh) 2013-06-19
TW201227001A (en) 2012-07-01
EP2630527A1 (en) 2013-08-28
CN103168259B (zh) 2015-11-25
WO2012054318A1 (en) 2012-04-26
JP2013545131A (ja) 2013-12-19
TWI531820B (zh) 2016-05-01
KR101926204B1 (ko) 2018-12-06
US9995861B2 (en) 2018-06-12
US20180292588A1 (en) 2018-10-11
US10634832B2 (en) 2020-04-28
US20130215512A1 (en) 2013-08-22

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