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.:
Date of Patent:
Jun. 15, 2010
Filed:
Feb. 01, 2007
Satoshi Arai, Fujisawa, JP;
Hiroaki Furuichi, Kawasaki, JP;
Yoshio Oozeki, Yokohama, JP;
Rika Nomura, Yokohama, JP;
Kazumi Takahashi, Toyokawa, JP;
Satoshi Arai, Fujisawa, JP;
Hiroaki Furuichi, Kawasaki, JP;
Yoshio Oozeki, Yokohama, JP;
Rika Nomura, Yokohama, JP;
Kazumi Takahashi, Toyokawa, JP;
Hitachi Media Electronics Co., Ltd., Iwate, JP;
Abstract
An optical pickup device having an optical module provided with an optical element and bonded and fixed to an optical pickup case, wherein the optical module is fixed to the optical pickup case by a first ultraviolet curing adhesive at at least two positions with an optical axis between the positions, the optical axis extending from the optical element to the optical pickup case, and at least a part of an exposed surface of the first ultraviolet curing adhesive is covered with a second ultraviolet curing adhesive higher in hardness or elastic modulus than the first ultraviolet curing adhesive to diminish an optical axis offset of the optical pickup device, further, a heat dissipating material higher in thermal conductivity than the first and second ultraviolet curing adhesives is brought into contact with both optical module and optical pickup case to improve the heat dissipating performance of the optical pickup device.