The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7440361 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 21, 2008

Filed:

Feb. 17, 2004
Applicants:

Jin-won Lee, Gyeonggi-do, KR;

Kwang Kim, Gyeonggi-do, KR;

Seok-jung Kim, Gyeonggi-do, KR;

Chong-sam Chung, Gyeonggi-do, KR;

Hea-jung Suh, Hwaseong-gun, KR;

Jong-chul Choi, Gyeonggi-do, KR;

Inventors:

Jin-won Lee, Gyeonggi-do, KR;

Kwang Kim, Gyeonggi-do, KR;

Seok-jung Kim, Gyeonggi-do, KR;

Chong-sam Chung, Gyeonggi-do, KR;

Hea-jung Suh, Hwaseong-gun, KR;

Jong-chul Choi, Gyeonggi-do, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical pickup apparatus including a swing arm pivotably installed in a tracking direction with respect to a disc, and an optical pickup unit supported by the swing arm and driven in a focusing direction, wherein the optical pickup unit includes a laser diode, an objective lens to focus light emitted from the laser diode on a recording surface of the disc, and a heat sink plate to dissipate heat generated from the laser diode, wherein the heat sink plate is provided close to the disc so as to be directly exposed to wind generated during rotation of the disc.


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