Optical pickup device

Details Optical pickup device Optical pickup device

2007-04-17

2007-04-17

Tran, Thang V. (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112070, C369S112220, C369S112230, C369S094000

Reexamination Certificate

active

10921864

ABSTRACT:
An aberration correction element is disposed between first to third laser light sources and an objective lens, first and second laser lights emitted from the first and second laser light sources are incident upon the aberration correction element in the form of parallel lights, and a third laser light emitted from the third laser light source is incident upon the aberration correction element in the form of a divergent light.

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patent: 2003-067972 (2003-03-01), None
Katayama, R., “Blue/DVD/CD Compatible Optical Head”, Microoptics News, vol. 20, No. 3, pp. 19-23.

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