Photomultiplier including election lens electrode

Details Photomultiplier including election lens electrode Photomultiplier including election lens electrode

1993-05-27

1995-05-30

O'Shea, Sandra L.

Electric lamp and discharge devices

Photosensitive

Having a control electrode

313534, H01J 4318

Patent

active

054204763

ABSTRACT:
An electron lens electrode for guiding photoelectrons emitted from a photocathode to an electron multiplier section is arranged between the photocathode and the light-incident portion of a sealed container, and an opening is formed at a portion of the electron lens electrode opposing the light-incident portion. Incident light reaches the photocathode through the opening without being scattered or absorbed at all. The transmittance of light incident on a photomultiplier is improved, and the output waveform is uniformed, resulting in an improved S/N ratio.

REFERENCES:
patent: 3873867 (1975-03-01), Girvin
patent: 4367404 (1983-01-01), Kaye
patent: 5043628 (1991-08-01), Boutot et al.
patent: 5061875 (1991-10-01), Tomasetti et al.
Patent Abstracts of Japan, vol. 15, No. 70 (E-1035) 19 Feb. 1991 & JP-A-02 291 655 (Hamamatsu Photonics K.K.) 3 Dec. 1990 *abstract*.

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