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. 03, 2015
Filed:
Mar. 14, 2011
Terunobu Saitoh, Kawasaki, JP;
Terunobu Saitoh, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention relates to a conjugated aromatic compound represented by the Formula (1) in claim(in the formula, Arrepresents a hydrogen atom or an aryl group optionally having a substituent; Arand Areach represent a hydrogen atom or an aryl group optionally having a substituent but at least one of Arand Arrepresents an aryl group optionally having a substituent; and A represents an aromatic hydrocarbon group) and relates to an optical material containing the conjugated aromatic compound. The conjugated aromatic compound and the optical material have characteristics of a high chromatic aberration correction function, high refractive-index dispersion characteristics (Abbe number (νd)) and high secondary dispersion characteristics (θg,F) (anomalous dispersion characteristics).