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:
Jul. 22, 2008
Filed:
Feb. 13, 2002
Masahiro Yamada, Kanagawa, JP;
Tetsu Watanabe, Tokyo, JP;
Masahiro Yamada, Kanagawa, JP;
Tetsu Watanabe, Tokyo, JP;
Sony Corporation, , JP;
Abstract
A lens and combination lens able to suppress deviation of an optical axis of a lens occurring at the time of combination and able to be adjusted at a high precision, a method of producing the combination lens, and an optical pickup device and an optical disk drive mounting the combination lens thereon are provided. A first lens Lcomprising a lens bodywhere one surface on an incident side or an emitting side of light is a flat surface and the other surface parallel to the surface formed as the flat surface is a structural element and a second lens Lcomprising a lens bodywhere one surface on an incident side or an emitting side of light is a flat surface and the other surface parallel to the surface formed as the flat surface is a structural element are adhered together. The combination lens is used as the object lens for an optical pickup device and an optical disk drive.