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:
Nov. 04, 2008
Filed:
Mar. 14, 2006
Toru Hama, Kanagawa, JP;
Nobuhiko Ando, Tokyo, JP;
Toru Hama, Kanagawa, JP;
Nobuhiko Ando, Tokyo, JP;
Sony Corporation, , JP;
Abstract
An optical pickup includes a light source for emitting a light beam; an objective lens for condensing the light beam emitted from the light source and irradiating an optical recording medium with the condensed light beam; a collimator lens, disposed between the light source and the objective lens, for forming the light beam emitted from the light source into a parallel light beam and guiding the parallel light beam to the objective lens; and an aberration correcting device, disposed in an optical path connecting the light source and the optical recording medium, for correcting aberration. The aberration correcting device is disposed in an optical path connecting the light source and the collimator lens.