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. 20, 1999
Filed:
Jun. 03, 1997
Kaoru Arai, Omiya, JP;
Shigeo Suzuki, Omiya, JP;
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
A light source device for an endoscope which sufficiently shields the high-frequency noise produced from a lamp even if there is an opening through which the lamp is exchanged. A lamp hatch for shielding the noise is provided at the opening of the lamp house, and EMI springs for maintaining the electrical conduction state are provided at the portion at which the lamp hatch and the edge portion of the opening overlap each other. When a cooling fan is provided in the lamp house, a plurality of air ports are provided in the lamp hatch which make the air flow of the cooling fan smooth and which have an effect of shielding the noise produced from the lamp. It is favorable to arrange the air ports at an interval of less than 2/.lambda. on the assumption that the wavelength of the noise frequency is .lambda..
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile