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:
Aug. 03, 1999
Filed:
Mar. 21, 1997
Tetsuji Arai, Yokohama, JP;
Koutaro Moroishi, Kawasaki, JP;
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Abstract
Treating of a workpiece which frequently undergoes heat-induced changes such as deformation, color changes and the like without using a cooling means for the workpiece is achieved by the fact that, of the light which was incident from a rod-shaped lamp on a trough-shaped cold mirror, the ultraviolet light (including some of the visible rays and infrared light) is reflected by the trough-shaped cold mirror and by at least one other cold mirror which is preferably plate-shaped. Furthermore, of the light which was emitted from the rod-shaped lamp and which was incident on the other cold mirror(s), the ultraviolet light (including some of the visible rays and infrared light) is reflected by the other cold mirror(s). The light reflected by the other cold mirrors is incident on the plate-shaped heat refraction filter and some of the visible rays are reflected and are incident on a workpiece. The light emitted by the rod-shaped lamp is not directly radiated onto the workpiece via the heat refraction filter. Therefore, the IR component and the component of the visible rays which are emitted onto the workpiece can be reduced and overheating of the workpiece can be prevented.