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:
Jan. 18, 2011
Filed:
Jul. 30, 2007
Satoshi Arai, Fujisawa, JP;
Hiroaki Furuichi, Kawasaki, JP;
Yoshio Oozeki, Yokohama, JP;
Rika Nomura, Yokohama, JP;
Masayuki Okamura, Fujisawa, JP;
Kazumi Takahashi, Toyokawa, JP;
Mitsuo Satake, Yokohama, JP;
Satoshi Arai, Fujisawa, JP;
Hiroaki Furuichi, Kawasaki, JP;
Yoshio Oozeki, Yokohama, JP;
Rika Nomura, Yokohama, JP;
Masayuki Okamura, Fujisawa, JP;
Kazumi Takahashi, Toyokawa, JP;
Mitsuo Satake, Yokohama, JP;
Hitachi Media Electronics Co., Ltd., Iwate, JP;
Abstract
The present invention provides an optical pickup device employing a disc protector that includes a plurality of first protrusions and at least one second protrusion disposed on the lens holder, wherein the first protrusions are formed by applying a first adhesive to a plurality of areas of a top surface of the lens holder, wherein the first protrusions are arranged at different locations in the tracking direction such that the objective lens is sandwiched between the first protrusions, wherein the at least one second protrusion protrudes is formed by applying a second adhesive to at least one area of the top surface of the lens holder, and wherein tips of the first protrusions are closer to the optical disc than a tip of the at least one second protrusion.