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:
Oct. 23, 2007
Filed:
Nov. 04, 2003
Jun Suzuki, Tokorozawa, JP;
Eiji Kuroki, Tokorozawa, JP;
Jun Suzuki, Tokorozawa, JP;
Eiji Kuroki, Tokorozawa, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
Provided is an actuator for use in a pickup device, which can improve the quality of the pickup device by reducing a lens distortion even when the frequency of an electromagnetic drive rises beyond a servo band and causes resonance of a lens holder. An adhesive layer () is formed between an outer peripheral portion (A) of an objective lens () and a lens holder (). This adhesive layer () has a sufficient thickness dimension enough to absorb deformation of the lens holder () even when the lens holder () is deformed due to resonance. Even when the frequency at which an electromagnetic drive () operates rises beyond the servo band and causes resonance of the lens holder (), the adhesive layer () functions as a buffer so that deformation of the lens holder () is less transmitted to the objective lens ().