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:
Sep. 13, 2011
Filed:
May. 25, 2007
Yasuaki Inoue, Osaka, JP;
Katsumoto Ikeda, Osaka, JP;
Hideki Miyazaki, Ibaraki, JP;
Nalux Co., Ltd, Osaka, JP;
Abstract
There is provided an infrared light source that has a simple structure and radiates infrared rays polarized in a specific direction and having a specific wavelength. The infrared light source () comprises a heat generator () and a latticework () in which a dielectric part () and a metal part () are alternately formed at a constant pitch in a constant direction. The infrared rays are radiated in a direction perpendicular to the surface of the latticework and are polarized in the direction indicated by an arrow A. If the constant pitch is denoted by P, the width of the dielectric part in the constant direction by T, and the specific wavelength by λ, for arbitrary P and T that meet the inequalities 0<P≦2.0λ and T≦0.5P, the depth D of the latticework is so selected that the intensity spectrum of the infrared rays radiated from the infrared light source has the peak at λ.