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.

Date of Patent:
Mar. 06, 2012

Filed:

Apr. 16, 2010
Applicants:

Seong-su Park, Hwaseong-si, KR;

Soo-han Park, Yongin-si, KR;

Bong-gi Kim, Suwon-si, KR;

Ichiro Morishita, Yokohama, JP;

Myoung-seok Kim, Seoul, KR;

Jung-woo Hong, Suwon-si, KR;

Inventors:

Seong-su Park, Hwaseong-si, KR;

Soo-han Park, Yongin-si, KR;

Bong-gi Kim, Suwon-si, KR;

Ichiro Morishita, Yokohama, JP;

Myoung-seok Kim, Seoul, KR;

Jung-woo Hong, Suwon-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01); G11B 7/135 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical pickup apparatus includes a light generating unit to generate a light to record or reproduce information, an objective lens to focus the light generated from the light generating unit onto a disk, and a multi-sectional polarizer disposed on a light path between the light generating unit and the objective lens and divided into a plurality of sectors having their individual optical axes.


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