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:
Jan. 26, 2010
Filed:
Feb. 24, 2003
Minoru Niigaki, Hamamatsu, JP;
Shoichi Uchiyama, Hamamatsu, JP;
Hirofumi Kan, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
A transmission type photocathode includes a light absorption layerformed of diamond or a material containing diamond as a main component, a supporting framefor reinforcing the mechanical strength of the light absorption layer, a first electrodeprovided at the plane of incidence of the light absorption layer, and a second electrodeprovided at the plane of emission of the light absorption layer. A voltage is applied between the plane of incidence and plane of emission of the light absorption layerto form an electric field in the light absorption layer. When light to be detected is made incident and photoelectrons occur in the light absorption layer, the photoelectrons are accelerated to the plane of emission by the electric field formed in the light absorption layer, and emitted to the outside of the transmission type photocathode.