Side-on type photomultiplier comprising an envelope having an op

Details Side-on type photomultiplier comprising an envelope having an op Side-on type photomultiplier comprising an envelope having an op

1997-09-05

1998-12-08

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313524, 313532, H01J 4016

Patent

active

058473807

ABSTRACT:
The present invention relates to a versatile side-on type photomultiplier comprising a structure for improving the uniformity in light receiving sensitivity. This photomultiplier comprises a positioning structure for precisely positioning, with respect to the light receiving surface of a photocathode, a lens element which guides light to be detected to a photocathode and constitutes a part of an envelope accommodating the photocathode. The precisely positioned lens element guides the light to be detected into, of the light receiving surface of the photocathode, an effective region where the light receiving sensitivity is high, thereby restraining the light to be detected from reaching the outside of the effective region.

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