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. 18, 2008
Filed:
Mar. 03, 2006
Toshihiko Nagamura, Fukuoka, JP;
Ikuo Matsukura, Yokohama, JP;
Toshihiko Nagamura, Fukuoka, JP;
Ikuo Matsukura, Yokohama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To provide a spatial optical modulation element having a long life free from a deterioration of optical modulation characteristics even if a high power laser beam with an ultra-short pulse is used as a modulation drive light. A spatial optical modulation elementwherein disposed between a prismand an optical functional material layermade of an optical functional material with the refractive index changeable by light irradiation, is a low refractive index layermade of a transparent material with a refractive index lower than the refractive index of the dielectric. A spatial optical modulation method characterized in that using such a spatial optical modulation element, at the interface between the prism and the low refractive index layer, reflection of a to-be-modulated lightentering through the prism, is controlled by a modulation drive light