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. 23, 1997
Filed:
Dec. 29, 1995
Byeong-ho Park, Seoul, KR;
Samsung Electronics Co., Ltd., Kyungki-do, KR;
Abstract
An optical pickup provided with a photodetector for detecting a tracking error signal includes a light source for radiating light; an objective lens disposed on an optical path between the light source and a disc which is an optical recording medium for focusing the light radiated from the light source on the optical disc; a diverter for diverting the optical path of reflected light disposed between the light source and the objective lens to prevent the light reflected from the disc from being reflected back to the light source; and a photodetector for receiving the light reflected from the disc and detecting a tracking error signal and a focusing error signal. The photodetector consists of a first photodetector having a plate divided into at least two pieces for detecting light passing through the optical-path diverter converter after being reflected from the disc; and a second photodetector disposed around the objective lens and moving together therewith, and having a plate divided into at least two pieces.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile