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:
Apr. 26, 2005
Filed:
May. 18, 2001
Tatsuo Kurashima, Hamamatsu, JP;
Keiji Suyama, Hamamatsu, JP;
Nobuharu Harada, Hamamatsu, JP;
Kouji Makino, Hamamatsu, JP;
Tatsuo Kurashima, Hamamatsu, JP;
Keiji Suyama, Hamamatsu, JP;
Nobuharu Harada, Hamamatsu, JP;
Kouji Makino, Hamamatsu, JP;
Hamamatsu Photonics K.K., Shizouka, JP;
Abstract
In a light source, a heat sink is in contact with a side-on type discharge tube. The heat sink is in contact with a peripheral regionaround an exit windowof the discharge tube. The heat sink consists of a spring memberkept in direct contact with the peripheral region, and a radiating blockwhich connects the spring memberto a radiator box. Since materials made by sputtering or the like of electrodes in the discharge tubemostly attach to the peripheral regionof side wall, it is feasible to decrease the amount of materials attaching to the exit windowand, in turn, lengthen the lifetime of the discharge tube. Another light source may be constructed in structure in which the heat sink is in contact with a head-on type discharge tube or in structure in which light is outputted from a projecting portion.