Title:
OPTICAL STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2019/004463
Kind Code:
A1
Abstract:
The present invention comprises: an embossed layer having an embossed surface that includes a recording region, said recording region including an embossed recording body having an uneven structure; and a light-reflecting layer covering all or part of the recording region. The recording region includes: a refractive mirror region; and a diffraction region in the vicinity of the refractive mirror region. The refractive mirror region has a plurality of inclined mirrors aligned therein that constitute the embossed recording body. The diffraction region has a diffraction structure. The refractive mirror region has a plurality of local mirror structures and the diffraction region has a plurality of local diffraction structures. Each pair comprising a local diffraction structure and a local mirror structure that approaches the local diffraction structure forms one local structure.
Inventors:
EBINA KAZUYOSHI (JP)
Application Number:
PCT/JP2018/024946
Publication Date:
January 03, 2019
Filing Date:
June 29, 2018
Export Citation:
Assignee:
TOPPAN PRINTING CO LTD (JP)
International Classes:
G02B5/18; B42D25/328; G02B5/08
Domestic Patent References:
| WO2017138536A1 | 2017-08-17 |
Foreign References:
| JP2004184725A | 2004-07-02 | |||
| JP2009532726A | 2009-09-10 | |||
| JP2014071233A | 2014-04-21 | |||
| JP2012123102A | 2012-06-28 | |||
| JPH0764024A | 1995-03-10 | |||
| US20060132920A1 | 2006-06-22 | |||
| JP4611747B2 | 2011-01-12 | |||
| JPS5431363B2 | 1979-10-06 |
Other References:
See also references of EP 3647834A4
Attorney, Agent or Firm:
ONDA, Makoto et al. (JP)
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