Lens forchromatic aberration compensation
US7042658B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2004 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Oct 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B27/0025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A lens for chromatic aberration compensation is provided. The lens includes a lens body and a plurality of color filter films. The lens body has a light incident plane, a light exit plane and an optical axis. The light incident plane and/or the light exit plane comprises a plurality of discrete area, wherein the area comprises, for example but not limited to, a plurality of annular areas, fan-shaped areas, or polygon areas. The color filter films are disposed over the areas of the lens body respectively, and comprise red color filter films, green color filter films or blue color filter films. Accordingly, the lens for chromatic aberration compensation of the invention can eliminate the aberration effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.