Optical system having a convex surface for accessing a storage medium
US7050381B2 · kind B2 · utility
0Cited by
7References
4Claims
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Key dates
| Filing date | Jul 3, 2002 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Nov 26, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/0006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical system for accessing a storage medium. The system combines two kinds of laser diode, abandons some unnecessary optical elements used in the prior art, and further uses a Penta prism to fold the optical path. Moreover, the optical system uses a CZBO prism to locate the two laser diodes abreast of each other. Thus, the space of the optical system is reduced, and the optical system is more compact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.