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:
Dec. 04, 2007
Filed:
Apr. 20, 2004
Soshu Kirihara, Mino, JP;
Yoshinari Miyamoto, Ikeda, JP;
Takuji Nakagawa, Muko, JP;
Katsuhiko Tanaka, Ibaragi, JP;
Soshu Kirihara, Mino, JP;
Yoshinari Miyamoto, Ikeda, JP;
Takuji Nakagawa, Muko, JP;
Katsuhiko Tanaka, Ibaragi, JP;
Abstract
Photonic crystal units (, and) are formed by an optical molding process using a photocurable resin, and partitions () are provided at the boundaries therebetween. The voids in each photonic crystal unit are filled with a second substance containing ceramic particles dispersed therein to form a filled portion. A plurality of three-dimensional periodic structure units containing the first and second substances distributed with three-dimensional periodicity are arranged so as to have different ratios between the dielectric constants of the first and second substances. Therefore, present invention provides a three-dimensional periodic structure having a wide photonic band gap which could not be obtained in a conventional three-dimensional periodic structure.