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. 18, 2008
Filed:
Jan. 14, 2005
Tae-kyung Kim, Seoul, KR;
Young-man Ahn, Suwon-si, KR;
Chong-sam Chung, Hwaseong-si, KR;
Seok-jung Kim, Suwon-si, KR;
Tae-youn Heor, Suwon-si, KR;
Tae-kyung Kim, Seoul, KR;
Young-man Ahn, Suwon-si, KR;
Chong-sam Chung, Hwaseong-si, KR;
Seok-jung Kim, Suwon-si, KR;
Tae-youn Heor, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An optical pickup including an optical member which inhibits interference light reflected from an adjacent layer from being received by a photodetector when an optical information storage medium includes a plurality of recording layers on at least one side thereof. The optical pickup suppresses a photodetector, especially first and second sub-photodetectors of the photodetector, from receiving the interference light reflected from the adjacent layer.