Lens correcting wavefront error caused by tilt and optical pickup using same
US7289417B2 · kind B2 · utility
4Cited by
6References
72Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 2003 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Apr 9, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical pickup having a plurality of objective lenses. At least one of the plurality of objective lenses is configured so that a type of wavefront error mainly generated by a tilt of the at least one of the plurality of objective lenses is the same as a type of a wavefront error mainly generated by an angle at which light is incident upon the at least one of the plurality of objective lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.