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:
Jun. 05, 2018
Filed:
May. 25, 2010
Akio Takada, Miyagi, JP;
Takatoshi Yamada, Miyagi, JP;
Nobuyuki Koike, Miyagi, JP;
Masatoshi Sasaki, Miyagi, JP;
Kazuyuki Shibuya, Miyagi, JP;
Akio Takada, Miyagi, JP;
Takatoshi Yamada, Miyagi, JP;
Nobuyuki Koike, Miyagi, JP;
Masatoshi Sasaki, Miyagi, JP;
Kazuyuki Shibuya, Miyagi, JP;
DEXERIALS CORPORATION, Tokyo, JP;
Abstract
A wave plate capable of increasing a birefringence quantity and being made into a thin film, and a method of manufacturing the wave plate. The wave plate includes a substrate, whereon convex portions and concave portions are formed with a period less than or equal to the wavelength of light that is used therewith, columnar portions, wherein fine grains of a dielectric material are layered by oblique vapor deposition of a dielectric material from two directions, in a columnar shape on the convex portions in the vertical direction relative to the surface of the substrate, and interstices that are located on the concave portions and disposed between the columnar portions. Using birefringence from the fine grains of the dielectric material and birefringence from the concave/convex portions of the substrate allows increasing the birefringence quantity and making a thin film.