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. 12, 2011
Filed:
Oct. 02, 2007
Shinya Hatano, Osaka, JP;
Kazuhiro Takahashi, Osaka, JP;
Hiromasa Sasaoka, Osaka, JP;
Ryozo Hosoda, Osaka, JP;
Shinya Hatano, Osaka, JP;
Kazuhiro Takahashi, Osaka, JP;
Hiromasa Sasaoka, Osaka, JP;
Ryozo Hosoda, Osaka, JP;
Funai Electric Co., Ltd., Osaka, JP;
Abstract
An optical pickup includes a first objective lens, a second objective lens having a numerical aperture different from that of the first objective lens, and an objective lens holder that holds the objective lenses. The first objective lens is attached to the objective lens holder via a spacer. The objective lens holder has a first fixture hole that receives the spacer with the first objective lens and a second fixture hole that receives the second objective lens. The first fixture hole is provided with a spacer supporting portion in which the spacer is inserted in a rotatable manner.