Title:
PHOTOMULTIPLIER
Document Type and Number:
Japanese Patent JPH09283075
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a photomultiplier capable of utilizing its high S-N ratio characteristic and attaining higher light detection efficiency by forming a photoelectric transfer face into a conical structure so that the incident light repeats multiple reflections in the conical structure. SOLUTION: The photoelectric transfer face 13 of this photomultiplier is formed into a conical structure, the incident light 21 repeats multiple reflections in the conical structure, and more incident light component is converted into photoelectrons 18 as the number of reflections is increased on the photoelectric transfer face 13. A photoelectric material and a semiconductor material are used for the material of the photoelectric transfer face 13. When the conical photoelectric transfer face 13 is formed on the surface of a conical recess 12, for example, high light detection efficiency can be obtained with a simple structure.
Inventors:
YAMAMOTO YOSHIHISA
TAKIGUCHI YOSHIHIRO
TAKIGUCHI YOSHIHIRO
Application Number:
JP9387796A
Publication Date:
October 31, 1997
Filing Date:
April 16, 1996
Export Citation:
Assignee:
KAGAKU GIJUTSU SHINKO JIGYODAN
YAMAMOTO YOSHIHISA
TAKIGUCHI YOSHIHIRO
YAMAMOTO YOSHIHISA
TAKIGUCHI YOSHIHIRO
International Classes:
G01J1/02; G01J1/42; H01J40/06; H01J43/10; (IPC1-7): H01J40/06; G01J1/02; G01J1/42; H01J43/10
Attorney, Agent or Firm:
清水 守
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