Laser module and optical head

Details Laser module and optical head Laser module and optical head

2006-01-10

2006-01-10

Ometz, David (Department: 2655)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S044110, C369S044140, C369S044370

Reexamination Certificate

active

06985424

ABSTRACT:
An optical head in which a plurality of semiconductor laser chips are adhered on a mount surface perpendicular to the tracking servo direction of a focusing lens. Fluctuation of an optical spot power is reduced even if the tracking servo is performed by the optical head having dispersion of an inner surface direction when a plurality of the semiconductor laser chips are mounted. In FIG.1, a plurality of the semiconductor laser chips4aand4bare arranged so as to have a mounting direction which is substantially perpendicular to the tracking servo direction of the focusing lens.

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patent: 10-027374 (1998-01-01), None
patent: 10027374 (1998-01-01), None
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