Optical pickup device having heat radiating mechanism

Details Optical pickup device having heat radiating mechanism Optical pickup device having heat radiating mechanism

1998-02-11

2000-07-04

Huber, Paul W.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369120, G11B 700

Patent

active

060848413

ABSTRACT:
An optical pickup device includes at least four light-receiving-surface elements, at least two semiconductor lasers, and an optical system for irradiating a light beam onto an optical recording medium through an objective lens for forming a light spot onto an information recording surface thereof. The optical system guides the return light from the light spot to the four light-receiving-surface elements through the objective. The semiconductor lasers are mounted on a plurality of flat side surfaces of a single heat sink which do not exist on a common virtual plane.

REFERENCES:
patent: 5703856 (1997-12-01), Hayashi et al.
patent: 5717675 (1998-02-01), Yamamoto

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