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. 05, 1995
Filed:
Sep. 03, 1993
Applicant:
Inventors:
Jiin-Shyan Tzeng, Taipei, TW;
Chien-Chung Pien, Taipei, TW;
Tsung-Ming Yang, Kee-Lung, TW;
Pei-Yuh Liu, Chang-Hwa, TW;
Assignee:
Industrial Technology Research Institute, Taiwan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
359638 ;
Abstract
An equivalent Wollaston prism is disclosed for splitting an incident light beam into two adjacent beams which are S-polarized and P-polarized respectively. The polarized light beams are at approximately a right angle with the incident light beam, therefore the structure of optical pick-up head will not be limited to a straight line configuration. The entire structure is compact, easy to align, and economical.