Optical device, method for producing master for use in producing optical device, and photoelectric conversion apparatus
US7633045B2 · kind B2 · utility
8Cited by
2References
21Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 21, 2007 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Dec 3, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an optical device, a number of structures having higher portions or lower portions are arranged at a fine pitch equal to or shorter than a wavelength of visible light on a surface of a base. Each of the structures is arranged to form a plurality of arc track rows on the surface of the base, and to form a quasi-hexagonal lattice pattern, and the structure has an elliptical cone or truncated elliptical cone shape having a major axis in a circumferential direction of the arc tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.