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:
Jan. 09, 2001
Filed:
Jan. 09, 1998
Tsutomu Mochizuki, Chiba, JP;
Yutaka Sugawara, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
In order to provide an optical pick-up capable of carrying out write and read operations of information signals with respect to plural kinds of optical discs in which thicknesses of transparent bases are different from each other and simple in configuration, a first object lens,for converging light beams from a first light source onto an optical disc,of the first kind and a second object lens,for converging light beams from a second light source,onto an optical disc,of the second kind are provided on the same lens bobbin,. The lens bobbin,is movably supported by the columnar support shaft and is caused to undergo movement operation by magnetic circuit.