Printed material and photographic material
US8998429B2 · kind B2 · utility
1Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Mar 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/42
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A printed material includes a printed material body with a surface, and an optical element disposed on the surface of the printed material body. The optical element includes multiple structures formed at a pitch not longer than the wavelength of visible light. The structures have an aspect ratio of 0.6 or more and 5.0 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.