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:
Nov. 11, 2003
Filed:
Jul. 13, 2001
Hiroyuki Yamamoto, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An object of the invention is to provide a polarizing element which has a sufficiently large birefringence index and exhibits satisfactory blue-light transmittability by a simple and inexpensive method for manufacturing a polarizing element. An organic material which exhibits light transmittability and birefringence, such as PET, is stretch-processed into predetermined forms that are continuously kept uniform, thereby forming a plurality of prism sheets. These prism sheets are laminated on one another such that prism sheets having mutually different optical axes make contact with each other, thereby forming a layered structure of prism sheets. By cutting up the layered structure of prism sheets, a layered structure of optical blocks having a predetermined shape is obtained, thereby realizing a polarizing element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile