Photomultiplier with magnetic shielding case

Details Photomultiplier with magnetic shielding case Photomultiplier with magnetic shielding case

1997-09-05

2000-09-05

Cuchlinski, Jr., William A.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

257680, 257681, 257659, 257660, 361800, 361816, 361818, 250216, H05K 900

Patent

active

061146218

ABSTRACT:
The present invention relates to a magnetic shielding case comprising a structure for improving the uniformity in light receiving sensitivity of a phomultiplier while maintaining sufficient magnetic shielding function, and a light detecting apparatus including this magnetic shielding case. This apparatus comprises a photomultiplier and a magnetic shielding case accommodating the photomultiplier. In particular the magnetic shielding case comprises a housing having an opening for transmitting therethrough light to be detected which is directed to the photomultiplier; a lens element for guiding the light to be detected into an effective region on a photocathode; and a positioning structure for placing the photomultiplier at a desired position with respect to the lens element.

REFERENCES:
patent: 3567948 (1971-03-01), Oke et al.
patent: 4152745 (1979-05-01), Eul
patent: 5130531 (1992-07-01), Ito et al.
"Photomultiplier tubes, Hamamatsu Photonics Catalogue" Aug. 1995, Cat. No. TPMO 0002E04, Japan XP002095966.

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