Optical disk apparatus and optical pickup

Details Optical disk apparatus and optical pickup Optical disk apparatus and optical pickup

2009-01-06

2011-10-25

Simpson, Lixi C (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S112010

Reexamination Certificate

active

08045425

ABSTRACT:
An optical disk apparatus includes a light source that emits a light flux. A light source drive circuit causes the light source to emit the light flux. An optical base has an optical system disposed thereon. The optical system includes an objective lens for guiding the light flux emitted from the light source to a disk-shaped recording medium. A moving mechanism moves the optical base. A first heat radiation member is connected to the light source, and a second heat radiation member is connected to the light source drive circuit and is different from the first heat radiation member. The first heat radiation member and the second heat radiation member are provided so as to face the disk-shaped recording medium. The first heat radiation member is disposed on the disk-shaped recording medium side with respect to the second heat radiation member, and the first heat radiation member has a hole provided therein, for exposing the second heat radiation member to the disk-shaped recording medium.

REFERENCES:
patent: 2005/0249055 (2005-11-01), Ochi et al.
patent: 2005/0281142 (2005-12-01), Ochi et al.
patent: 2006/0193222 (2006-08-01), Torii
patent: 2007/0171806 (2007-07-01), Wade et al.
patent: 2008/0074962 (2008-03-01), Toyoda et al.
patent: 2009/0122685 (2009-05-01), Torii
patent: 2002-373440 (2002-12-01), None
patent: 2006-147032 (2006-06-01), None

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