Optical integrated module and optical pickup device

Details Optical integrated module and optical pickup device Optical integrated module and optical pickup device

2006-06-06

2011-12-06

Hindi, Nabil (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044140

Reexamination Certificate

active

08072849

ABSTRACT:
An optical integrated unit according to the present invention is an optical integrated unit, including: a semiconductor laser acting as a light source; at least one light-receiving element; a light-separating section for separating light emitted by the semiconductor laser from light reflected by an optical disc and for reflecting the light reflected by the optical disc so that the light reflected by the optical disc is directed to the light-receiving element; and a support substrate, wherein a second support substrate has a concave shape, the light-separating section is constituted of at least three prisms, the prisms positioned at both ends of the light-separating section are respectively attached to two protruding sections of the concave shape of the second support substrate, and the light-receiving element is attached to the light-separating section via a cover glass. As a result, it is possible to solve such a problem that the light-receiving element cannot be adjusted with high accuracy because of a thickness error of the support substrate or an intermediate substrate in conventional techniques.

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