Bandpass photon detector

Details Bandpass photon detector Bandpass photon detector

1997-02-13

1999-11-30

Kim, Robert H.

Optics: measuring and testing

By shade or color

With color transmitting filter

356416, 356311, 250226, G01J 351, G01N 2125

Patent

active

059952350

ABSTRACT:
Apparatus for bandpass photon detection containing a lens for collimating input light, a bandpass filter element, and a photomultiplier detector. Light passes from a source into the lens which collimates the light which then is incident upon the filter. The filter is tuned to a particular band of wavelengths, such that out of all of the wavelengths that are incident upon the front side of the filter, a wavelength band is propagated through the filter and passes from the filter to the photomultiplier detector, such that the output of the photomultiplier detector is a voltage level representing the energy content within that wavelength band. In various alternative embodiments, the bandpass photon detectors are arranged in a number of cascade arrangements such that multiple wavelength bands are simultaneously detected.

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