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:
Sep. 12, 2017
Filed:
Apr. 25, 2016
Applicant:
Hitachi-lg Data Storage, Inc., Tokyo, JP;
Inventors:
Assignee:
HITACHI-LG DATA STORAGE, INC., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/0065 (2006.01); G11B 7/1369 (2012.01); G11B 7/1381 (2012.01); G11B 7/0037 (2006.01); G11B 7/00 (2006.01);
U.S. Cl.
CPC ...
G11B 7/1369 (2013.01); G11B 7/1381 (2013.01); G11B 7/0037 (2013.01); G11B 7/0065 (2013.01); G11B 2007/0009 (2013.01);
Abstract
A light information recording/reproducing apparatus can improve the optical efficiency of an optical system at the time of reproduction to thereby improve the reproduction transfer rate. An optical element (for example, an optical isolator), which removes a return light beam of a light beam, is arranged such that the light beam passes through the optical element at the time of recording information in an optical information recording medium and such that the light beam does not pass through the optical element at the time of reproducing information from the optical information recording medium.