JP6988823B2 - 光学フィルム - Google Patents
光学フィルム Download PDFInfo
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- JP6988823B2 JP6988823B2 JP2018553019A JP2018553019A JP6988823B2 JP 6988823 B2 JP6988823 B2 JP 6988823B2 JP 2018553019 A JP2018553019 A JP 2018553019A JP 2018553019 A JP2018553019 A JP 2018553019A JP 6988823 B2 JP6988823 B2 JP 6988823B2
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Images
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- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
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- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
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- Credit Cards Or The Like (AREA)
- Holo Graphy (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Description
図1Aは、本発明の実施形態に係る光学フィルムを説明するための概要図である。
このように、(a)輝度情報および(b)奥行情報の画像ファイルから、3次元情報を構築することができる。すなわち、計算要素区画16に(a)輝度情報を与えれば、明るさに階調を持つ濃淡再生点となり、(a)輝度情報を与えなければ、明るさの等しい単調な再生点となる。
上述したような本実施形態に係る光学フィルム10に個人認証情報を記録するための応用例について説明する。
実施形態では、計算要素区画16における単位ブロック12に、対応する位相角φの数値情報を記録することについて説明した。本変形例では、計算要素区画16における単位ブロック12に、位相角φの数値情報を記録する代わりに、計算機が、位相角φを、対応する単位ブロック12の凹凸の高さに変換し、位相角φに対応する高さを有する凹凸を、計算要素区画16の単位ブロック12に形成することによって、位相角φを計算要素区画16の単位ブロック12に記録する。
実施形態では、計算要素区画16における単位ブロック12に、対応する位相角φの数値情報を記録することについて説明した。本変形例では、位相角φの数値情報を記録する代わりに、計算機が、位相角φの変化を、記録面14の屈折率からの変化量に変換する。さらに、計算機が、その屈折率の変化量を実現するボイドに変換する。そして、このボイド23を、例えば、図23に示すように、計算要素区画16の単位ブロック12の場所に相当する基材11に埋め込むことによって、位相角φを計算要素区画16の単位ブロック12に記録する。
Claims (3)
- 複数の単位ブロックが一定の間隔で配置された記録面を備え、
前記記録面は、第1の再生像を構成する各再生点からの光の位相成分が計算される単位ブロックが整列した第1の計算要素区画と、第2の再生像を構成する各再生点からの光の位相成分が計算される単位ブロックが整列した第2の計算要素区画とを備え、
前記第1の再生像は、明るさが均一な単調再生像であり、前記第2の再生像は、明るさの階調を持つ濃淡再生像であり、
濃淡再生点において再生される濃淡画像の位相成分が、以下の関係、
ここで、Nは再生点の数、Yはy軸における座標、Xはx軸における座標であり、
単調再生点において再生される単調画像の位相成分が、以下の関係、
ここで、W(x,y)は座標xyにおける位相成分、iは虚数、λは再生像を再生する際の光の波長、On(x,y,z)は再生点の座標に一番近い単位ブロックの中心座標、(kx,ky,0)は単位ブロックの座標、φは位相角、ampは濃淡の情報である、光学フィルム。 - 前記第1の再生像が再生される再生点の数は、前記第2の再生像が再生される再生点の密度とは異なる、請求項1に記載の光学フィルム。
- 個人認証情報が記録された、請求項1または2に記載の光学フィルム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016230369 | 2016-11-28 | ||
JP2016230369 | 2016-11-28 | ||
PCT/JP2017/042638 WO2018097315A1 (ja) | 2016-11-28 | 2017-11-28 | 光学フィルム |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2018097315A1 JPWO2018097315A1 (ja) | 2019-10-17 |
JP6988823B2 true JP6988823B2 (ja) | 2022-01-05 |
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JP2018553019A Active JP6988823B2 (ja) | 2016-11-28 | 2017-11-28 | 光学フィルム |
Country Status (4)
Country | Link |
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US (1) | US11373344B2 (ja) |
EP (1) | EP3547038A4 (ja) |
JP (1) | JP6988823B2 (ja) |
WO (1) | WO2018097315A1 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2020080367A1 (ja) * | 2018-10-16 | 2020-04-23 | 凸版印刷株式会社 | 一体化3次元表示体および識別情報記録方法 |
JPWO2020162177A1 (ja) * | 2019-02-05 | 2021-12-02 | 東京応化工業株式会社 | 被認証物、認証システム、及び認証用媒体の生成方法 |
Family Cites Families (12)
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JP3810917B2 (ja) * | 1998-01-20 | 2006-08-16 | 大日本印刷株式会社 | 計算機ホログラムおよびその作成方法 |
JP3810934B2 (ja) | 1999-01-26 | 2006-08-16 | 大日本印刷株式会社 | 計算機ホログラムおよびその作成方法 |
JP3810961B2 (ja) * | 1999-09-17 | 2006-08-16 | 大日本印刷株式会社 | ホログラム記録媒体の製造方法 |
JP4387515B2 (ja) * | 1999-10-04 | 2009-12-16 | 大日本印刷株式会社 | ホログラム記録媒体およびその製造方法 |
JP4620220B2 (ja) * | 2000-06-09 | 2011-01-26 | 大日本印刷株式会社 | 計算機ホログラムおよびその製造方法 |
JP2002090548A (ja) * | 2000-09-14 | 2002-03-27 | Toppan Printing Co Ltd | 回折格子から成る表示体 |
JP4677688B2 (ja) * | 2001-06-29 | 2011-04-27 | 凸版印刷株式会社 | 計算機ホログラムから成る表示体 |
JP3925180B2 (ja) * | 2001-12-12 | 2007-06-06 | 凸版印刷株式会社 | 計算機ホログラムから成る表示体 |
JP4823890B2 (ja) * | 2003-03-06 | 2011-11-24 | ディジマーク コーポレイション | ドキュメント認証方法 |
JP4256372B2 (ja) | 2005-09-12 | 2009-04-22 | 大日本印刷株式会社 | 計算機ホログラムおよびその作成方法 |
JP4930696B2 (ja) * | 2006-09-01 | 2012-05-16 | 大日本印刷株式会社 | 計算機合成ホログラム及びその作製方法 |
US9183648B2 (en) * | 2014-03-04 | 2015-11-10 | Ivan Bajic | Method and system for high-resolution transforms of frequency-space and image/audio/video-space data |
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