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:
Jul. 16, 2013
Filed:
Dec. 05, 2008
Katsushige Nakamura, Tokyo, JP;
Katsushige Nakamura, Tokyo, JP;
Mitaka Kohki Co., Ltd., Tokyo, JP;
Abstract
An optical filteris fixed in an optical path in a light generation unitto cut out light in an infrared region. The optical filterdo not deviate from the optical path, and infallibly eliminate light in the infrared region which becomes heat radiation. The optical filtercuts out light whose wavelength is longer than a threshold wavelength that is longer than 805 nm and shorter than 815 nm, and eliminates heat radiation in the infrared region, which includes a wavelength (approximately 825 nm) which is substantially a first peak P of the radiant intensity of the xenon lamp
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