Antireflection structure, optical unit, and optical device
US8529075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2008 |
| Grant date | Sep 10, 2013 |
| Priority date | — |
| Expiry date | Oct 31, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An antireflection structure having a high antireflection effect is provided.An antireflection structure (50) reduces reflection of light having a wavelength equal to or larger than a predetermined wavelength, and absorbs the light whose reflection is reduced. The antireflection structure (50) includes a base structure portion (7) which is configured to have a plurality of structural units (70) arranged on a reference plane, and each having a tilted surface (71) so that an angle between the first side surface (71) and a reference plane (51) is a predetermined angle, and a plurality of fine concave/convex portions (8, 8, . . . ) which are formed on a surface of the base structure portion (7), and arranged within a cycle equal to or smaller than the predetermined wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.