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:
Mar. 22, 2011
Filed:
Aug. 31, 2007
Shinji Suzuki, Tokyo-to, JP;
Tetsuya Kitagawa, Himeji, JP;
Kyohei Seki, Himeji, JP;
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Abstract
A heating device of the light irradiation type having an article to be heated, a guard ring located on the periphery of that article, multiple lamps located above the article to be heated and the guard ring, and a reflecting mirror located above the lamps, in which a light diffusion part is located in the upper region corresponding to the article to be heated so that the diffused light projects onto the entire surface of the article to be heated. The light diffusion part can be formed, for example, on a reflecting mirror, an optically transparent window part located between the article to be heated and the lamps or a light diffusion area formed on the light-emitting bulbs of the lamps. The size of the region occupied by the light diffusion part is such that diffused light is not projected to the guard ring.