Photomultiplier tube with dynode array having venetian-blind structure

A venetian-blind type of photomultiplier tube for converting an incident light into an amplified electrical signal, comprising:

• a photocathode for converting the incident light into photoelectrons,
• a venetian-blind type of dynode array for emitting secondary electrons with multiplication upon incidence of the photoelectrons thereto, said dynode array comprising plural dynode rows arranged in a first direction, each of said dynode rows comprising plural dynode elements arranged at a constant pitch in a second direction and each of said dynode elements having a plate inclined to the first direction for emitting the secondary electrons;
• an anode array comprising plural anodes arranged in the second direction for collecting the secondary electrons emitted from said dynode array and outputting an amplified electrical signal corresponding to the light;
• and
• one or more electron-flight control members for convergently and concentrically directing at least one stream of the photoelectrons and the secondary electrons to a lower portion of each of said dynode elements.