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. 14, 1995
Filed:
Apr. 20, 1994
Applicant:
Inventors:
Makoto Kaji, Hitachi, JP;
Chie Odoi, Kanazawa, JP;
Masaichi Sagawa, Mito, JP;
Hiroyuki Kagawa, Hitachi, JP;
Atsushi Kakuta, Hitachiota, JP;
Kikujiro Ishii, Tokyo, JP;
Hideyuki Nakayama, Tokyo, JP;
Keiichiro Ogawa, Tokyo, JP;
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
385122 ; 359326 ; 359328 ; 359332 ; 372 22 ;
Abstract
An organic nonlinear optical single crystal belonging to a rhombic or monoclinic system and having a light absorption wavelength end of 410 nm or less and at least one nonlinear optical coefficient of 30 pm/V or more, and being able to phase match to the light absorption wavelength end, such as a single crystal of 1,4-dioxa-8-aza-8-(4'-acetylphenyl)-spiro[4.5]decane, is effective in nonlinear optical components and light frequency convertors.