Optical pickup apparatus and optical information recording and/or reproducing apparatus
US7697392B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2006 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Feb 10, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical pickup apparatus which conducts reproducing and/or recording information for a first optical information recording medium by using a light flux having a wavelength λ1 (350≦λ1 (nm)≦480) and a second optical information recording medium. The optical pickup apparatus comprises an output angle conversion element which is a fixedly arranged single lens which can convert an output angle of the first light flux and the second light flux. The optical detector equipped in the optical pickup apparatus can receive both of the first light flux and the second light flux. And, both optical surfaces of the output angle conversion element are refractive surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.