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. 08, 2008
Filed:
Oct. 17, 2003
Ui-yol Kim, Suwon-si, KR;
Byung-ryul Ryoo, Suwon-si, KR;
Pyong-yong Seong, Seoul, KR;
Myoung-cheol Cho, Seoul, KR;
Kyung-ui Park, Seoul, KR;
Ui-yol Kim, Suwon-si, KR;
Byung-ryul Ryoo, Suwon-si, KR;
Pyong-yong Seong, Seoul, KR;
Myoung-cheol Cho, Seoul, KR;
Kyung-ui Park, Seoul, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
An optical pickup includes a light source which emits light, a grating which separates a portion of the light emitted from the light source, a reflecting member which reflects another portion of the light emitted from the light source, a monitoring photodetector disposed on a traveling path of the light reflected from the reflecting member and which measures the reflected light, an optical path changer which changes an optical path of the light separated by the grating, an objective lens light which condenses the light the optical path of which is changed onto a disc, and a signal detecting photodetector which receives the light reflected from the disc.