JPWO2022091806A1 - - Google Patents

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Publication number
JPWO2022091806A1
JPWO2022091806A1 JP2022559004A JP2022559004A JPWO2022091806A1 JP WO2022091806 A1 JPWO2022091806 A1 JP WO2022091806A1 JP 2022559004 A JP2022559004 A JP 2022559004A JP 2022559004 A JP2022559004 A JP 2022559004A JP WO2022091806 A1 JPWO2022091806 A1 JP WO2022091806A1
Authority
JP
Japan
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.)
Granted
Application number
JP2022559004A
Other languages
Japanese (ja)
Other versions
JP7470206B2 (ja
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 filed Critical
Publication of JPWO2022091806A1 publication Critical patent/JPWO2022091806A1/ja
Application granted granted Critical
Publication of JP7470206B2 publication Critical patent/JP7470206B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/604—Polarised screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of 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
    • G02B5/0284—Diffusing elements; Afocal elements characterized by the use used in reflection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Polarising Elements (AREA)
JP2022559004A 2020-10-29 2021-10-14 ホワイトボードフィルム、ホワイトボードおよび覗き見防止システム Active JP7470206B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2020181420 2020-10-29
JP2020181420 2020-10-29
PCT/JP2021/038133 WO2022091806A1 (ja) 2020-10-29 2021-10-14 ホワイトボードフィルム、ホワイトボードおよび覗き見防止システム

Publications (2)

Publication Number Publication Date
JPWO2022091806A1 true JPWO2022091806A1 (https=) 2022-05-05
JP7470206B2 JP7470206B2 (ja) 2024-04-17

Family

ID=81382562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022559004A Active JP7470206B2 (ja) 2020-10-29 2021-10-14 ホワイトボードフィルム、ホワイトボードおよび覗き見防止システム

Country Status (5)

Country Link
US (1) US12455500B2 (https=)
EP (1) EP4239380A1 (https=)
JP (1) JP7470206B2 (https=)
CN (1) CN115427848A (https=)
WO (1) WO2022091806A1 (https=)

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07270916A (ja) * 1994-03-29 1995-10-20 Arisawa Mfg Co Ltd 偏光板付反射体並びに反射体
JPH09230506A (ja) * 1996-02-28 1997-09-05 Toppan Printing Co Ltd 反射型スクリーン
JPH10268427A (ja) * 1997-03-26 1998-10-09 Kimoto & Co Ltd ホワイトボード兼用反射型スクリーン用シート及び反射型スクリーン装置
JP2000227518A (ja) * 1999-02-08 2000-08-15 Nitto Denko Corp 偏光部材、光学部材及び液晶表示装置
JP2006051792A (ja) * 2004-07-13 2006-02-23 Mitsubishi Plastics Ind Ltd 筆記ボード／反射型スクリーン両用フィルムおよびこれを用いた兼用ボード
WO2008078618A1 (ja) * 2006-12-27 2008-07-03 Teijin Limited 偏光素子、および液晶表示装置
WO2009066515A1 (ja) * 2007-11-19 2009-05-28 Central Glass Company, Limited エバネッセント光源
JP2012088692A (ja) * 2010-09-17 2012-05-10 Nitto Denko Corp 光拡散素子、光拡散素子付偏光板、偏光素子、およびこれらを用いた液晶表示装置
US20150247962A1 (en) * 2013-02-06 2015-09-03 Steelcase Inc. Polarized Enhanced Confidentiality
JP2015200866A (ja) * 2014-03-31 2015-11-12 日東電工株式会社 光学部材、偏光板のセットおよび液晶表示装置
JP2017515153A (ja) * 2014-04-25 2017-06-08 スリーエム イノベイティブ プロパティズ カンパニー 光学製品のためのテクスチャ化コーティング
WO2018225741A1 (ja) * 2017-06-07 2018-12-13 日東電工株式会社 光学部材、画像表示装置、および光学部材の製造方法
WO2019202988A1 (ja) * 2018-04-16 2019-10-24 日東電工株式会社 部屋

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0736187B1 (en) 1993-12-21 2002-04-03 Minnesota Mining And Manufacturing Company Optical polarizer
JPH08142581A (ja) 1994-11-15 1996-06-04 Sanyo Electric Co Ltd 筆記ボード兼用スクリーン
JP2958558B2 (ja) 1996-02-06 1999-10-06 株式会社有沢製作所 大画面形成用スクリーン
JP4009514B2 (ja) 2002-09-27 2007-11-14 倉敷繊維加工株式会社 生分解性空気清浄用フィルター
JP4448392B2 (ja) 2004-06-28 2010-04-07 Ｈｏｙａ株式会社 反射防止膜を有する光学素子の製造方法
JP2007183524A (ja) * 2006-01-06 2007-07-19 Cheil Industries Inc 偏光光学素子及びそれを用いた液晶表示装置
JP2008040171A (ja) 2006-08-07 2008-02-21 Pentax Corp セルフクリーニング効果を有する反射防止膜を設けた光学素子及びその製造方法
JP5007416B2 (ja) 2009-02-17 2012-08-22 国立大学法人信州大学 多孔質シリカ膜の製造方法
JP5414738B2 (ja) 2010-09-03 2014-02-12 日東電工株式会社 薄型偏光膜の製造方法
WO2015068431A1 (ja) * 2013-11-05 2015-05-14 シャープ株式会社 スクリーンおよび表示撮像装置
JP7152130B2 (ja) 2015-09-07 2022-10-12 日東電工株式会社 低屈折率層、積層フィルム、低屈折率層の製造方法、積層フィルムの製造方法、光学部材および画像表示装置
JP7182358B2 (ja) 2017-01-31 2022-12-02 日東電工株式会社 低屈折率層含有粘接着シート、低屈折率層含有粘接着シートの製造方法、および光学デバイス
JP2018123233A (ja) 2017-01-31 2018-08-09 日東電工株式会社 空隙層、空隙層含有粘接着シート、空隙層の製造方法、空隙層含有粘接着シートの製造方法、および光学デバイス
CN111656085A (zh) 2018-01-26 2020-09-11 日东电工株式会社 Led照明器具用膜、led照明器具
JP2023149575A (ja) * 2022-03-31 2023-10-13 日東電工株式会社 ライティングボードセットおよび覗き見防止システム
JP2023158297A (ja) * 2022-04-18 2023-10-30 日東電工株式会社 ホワイトボードフィルムシステム、ホワイトボードシステムおよび覗き見防止システム

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07270916A (ja) * 1994-03-29 1995-10-20 Arisawa Mfg Co Ltd 偏光板付反射体並びに反射体
JPH09230506A (ja) * 1996-02-28 1997-09-05 Toppan Printing Co Ltd 反射型スクリーン
JPH10268427A (ja) * 1997-03-26 1998-10-09 Kimoto & Co Ltd ホワイトボード兼用反射型スクリーン用シート及び反射型スクリーン装置
JP2000227518A (ja) * 1999-02-08 2000-08-15 Nitto Denko Corp 偏光部材、光学部材及び液晶表示装置
JP2006051792A (ja) * 2004-07-13 2006-02-23 Mitsubishi Plastics Ind Ltd 筆記ボード／反射型スクリーン両用フィルムおよびこれを用いた兼用ボード
WO2008078618A1 (ja) * 2006-12-27 2008-07-03 Teijin Limited 偏光素子、および液晶表示装置
WO2009066515A1 (ja) * 2007-11-19 2009-05-28 Central Glass Company, Limited エバネッセント光源
JP2012088692A (ja) * 2010-09-17 2012-05-10 Nitto Denko Corp 光拡散素子、光拡散素子付偏光板、偏光素子、およびこれらを用いた液晶表示装置
US20150247962A1 (en) * 2013-02-06 2015-09-03 Steelcase Inc. Polarized Enhanced Confidentiality
JP2015200866A (ja) * 2014-03-31 2015-11-12 日東電工株式会社 光学部材、偏光板のセットおよび液晶表示装置
JP2017515153A (ja) * 2014-04-25 2017-06-08 スリーエム イノベイティブ プロパティズ カンパニー 光学製品のためのテクスチャ化コーティング
WO2018225741A1 (ja) * 2017-06-07 2018-12-13 日東電工株式会社 光学部材、画像表示装置、および光学部材の製造方法
WO2019202988A1 (ja) * 2018-04-16 2019-10-24 日東電工株式会社 部屋

Also Published As

Publication number Publication date
US12455500B2 (en) 2025-10-28
US20230123755A1 (en) 2023-04-20
EP4239380A1 (en) 2023-09-06
JP7470206B2 (ja) 2024-04-17
WO2022091806A1 (ja) 2022-05-05
CN115427848A (zh) 2022-12-02

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