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:
Feb. 05, 2013
Filed:
Sep. 16, 2009
Applicants:
Daisuke Sano, Utsunomiya, JP;
Yutaka Yamaguchi, Utsunomiya, JP;
Inventors:
Daisuke Sano, Utsunomiya, JP;
Yutaka Yamaguchi, Utsunomiya, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical element includes an optical anisotropic medium. A difference between a minimum refractive index nand a maximum refractive index nof the optical anisotropic medium at a used central wavelength is at least 0.1, and a refractive index nof a first medium optically adjacent to the optical anisotropic medium at the used central wavelength satisfies the following condition:()·()≦0.
Sano, Daisuke. (2013). Optical element and optical apparatus (U.S. Patent No. 8369015). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8369015
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile