Hitachi Media Electronics Co., Ltd.

Taketoshi Moriyama

Yoshio Oozeki

Kazumi Takahashi

Hiroaki Furuichi

Rika Nomura

Hiroyasu Yoshida

Katsumi Kuroguchi

An optical pickup device includes an optical part module having a light emitting device and an optical pickup case to which the optical part module is fixed by way of an adhesive, in which the optical part module is adhesively fixed by disposing a bonding surface of the optical part module to the optical pickup case at least at two positions on lateral surfaces of the optical part module putting an optical axis therebetween, and a bonding distance L in the lateral surface between the optical part module and the optical pickup is defined as: 40 &#x3bc;m&#x3c;L&#x3c;570 &#x3bc;m, whereby the optical pickup device can maintain an optimal position at a high positional accuracy without lowering a bonding strength even when a stress due to an external load by bending moment or circumstantial changes is caused to the optical part module, particularly in the case where the optical pickup device is thin.

Optical pickup device and optical disk drive apparatus

An optical pickup device includes a holder which holds an LD and a light-receiving element and an optical pickup case on which the holder is adhesively fixed via an ultraviolet cure adhesive, and is provided with a through hole on a bonding surface of the holder in order to reduce shrinkage when ultraviolet light is irradiated and to form a blind portion on which the ultraviolet light is not irradiated from a specific direction for adhesively fixing with high position accuracy.

Optical pickup device and method of manufacture therefor

Growing community of inventors

Fujisawa, Japan

Taketoshi Moriyama