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:
Aug. 03, 1999
Filed:
Jun. 05, 1997
Chul-woo Lee, Seoul, KR;
Dong-ho Shin, Seoul, KR;
Chong-sam Chung, Seongnam, KR;
Pyeong-yong Seong, Seoul, KR;
Kun-ho Cho, Suwon, KR;
Hyun-seob Choi, Suwon, KR;
Yong-hoon Lee, Suwon, KR;
Tae-kyoung Kim, Suwon, KR;
No-kyong Park, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon-City, KR;
Abstract
An optical pickup capable of compatibly adopting disks of different formats which are placed in an optical player includes a first optical source for emitting light having a predetermined wavelength, a second optical source for emitting light having a wavelength different from that of light emitted from the first optical source, an objective lens for focusing light emitted from the respective first and second optical sources on a recording medium placed in the optical player, a light path changing unit disposed on a light path between the first and second optical sources and the objective lens for changing the traveling path of incident light, a first optical detector for receiving light emitted from the first optical source and is incident via the recording medium and the light path changing unit, and a second optical detector for receiving light emitted from the second optical source and is incident via the recording medium and the light path changing unit.