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:
Apr. 17, 2012
Filed:
Aug. 13, 2009
Keiko Saito, Kitaibaraki, JP;
Katsuhiko Kimura, Kasumigaura, JP;
Takahiro Yamaguchi, Yokohama, JP;
Yoshihiro Sato, Hitachinaka, JP;
Keiko Saito, Kitaibaraki, JP;
Katsuhiko Kimura, Kasumigaura, JP;
Takahiro Yamaguchi, Yokohama, JP;
Yoshihiro Sato, Hitachinaka, JP;
Hitachi Media Electronics Co., Ltd., Iwata, JP;
Abstract
An objective lens actuator comprises, two objective lenses, each for focusing lights upon an optical disc, an objective lens holder member for holding the objective lenses thereon, and lens protectors for preventing the objective lenses from being contacted on the optical disc, wherein the lens protectors include first and second lens protectors, which are provided on both end portions of the objective lens holder member in a tracking direction, and a third lens protector, which is provided in a middle of the two objective lenses, wherein the first and second lens protectors, which are provided on both end portions of the objective lens holder member in the tracking direction, are provided the objective lenses and end portion of the objective lens holder member in the tracking direction, and the third lens protector, which is provided between the objective lenses, has a height closer to that of the optical disc than the protectors, which are provided on both end portions of the objective lens holder member in the tracking direction.