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. 23, 2002
Filed:
Dec. 21, 1998
LG Electronics Inc., Seoul, KR;
Abstract
An optical pick-up apparatus which can adaptively compensate for the aberration of a light beam. The optical pick-up apparatus employees a first light source for generating a first light beam having a first wavelength to be irradiated on a first type of disk and a second light source for generating a second light beam having a second wavelength to be irradiated on a second type of disk. A light path enables the first light beam from the first light source to be irradiated on the disk in the shape of a spot by a finite optical system. The light path allows the second light beam from the second light source to be irradiated on the disk in the shape of a spot by an infinite optical system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile