Optical element, optical element array, and solid-state image-pickup apparatus
US9606266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Apr 1, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/0015
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A convex lens has surfaces including a flat surface and a projecting surface, and an anti-reflection structure configured to cover the projecting surface are included. The anti-reflection structure includes a first anti-reflection structure on the first end side, which is one of two end points of the line segment located nearer to the orthogonal projection of the apex than to the center point thereof, and a second anti-reflection structure on a second end side, which is one of the two end points of the line segment located nearer to the center point than to the orthogonal projection of the apex. A light transmittance of the second anti-reflection structure is greater than a light transmittance of the first anti-reflection structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.