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:
Mar. 17, 2015
Filed:
Feb. 25, 2014
Toshiba Samsung Storage Technology Korea Corporation, Suwon-si, KR;
Ju-hee Im, Suwon-si, KR;
Ki-bok Kim, Suwon-si, KR;
Ji-sun Ahn, Seoul, KR;
Chan-ik Lee, Suwon-si, KR;
Jin-ho Jeong, Seoul, KR;
Toshiba Samsung Storage Technology Korea Corporation, Suwon-si, KR;
Abstract
Provided is an optical pickup device that compensates for an aberration caused by a beam splitter. When a beam of light is reflected from a disc and proceeds towards a beam splitter, the beam splitter is designed to allow the reflected beam to pass therethrough. However, the beam splitter can cause an astigmatism in the reflected beam due to diffraction. According to various aspects herein, an optical pickup device may include a compensation device that generates an inverse astigmatism to compensate for the astigmatism generated by the beam splitter.