Patent ID: 9064675
Filing Date: 2015-06-23
Classification: C03B,C03C,G02B,H01J,Y02P

Abstract:
1. A microchannel plate comprising: a glass effective portion having a first surface and a second surface opposing the first surface; a plurality of holes provided in the glass effective portion in order to form channels, each of the plurality of holes passing through the glass effective portion from the first surface to the second surface; and a glass rim portion surrounding a side surface of the effective portion, the side surface being located between the first surface and the second surface, the microchannel plate being shaped in a flat-plate form, wherein the effective portion consists of a plurality of polygonal glass portions each having a polygonal cross-sectional shape so as to have a plurality of corners, each of the plurality of polygonal glass portions being arrayed so as to form a corner region where a corner thereof and a corner of another adjacent polygonal glass portion of the plurality of polygonal glass portions are adjacent to each other, and wherein, in the effective portion, a number of the holes per unit area in the corner region is smaller than a number of the holes per unit area in a peripheral region of the corner region.