Dosimeter for photometric applications

Details Dosimeter for photometric applications Dosimeter for photometric applications

1982-06-17

1984-08-28

Evans, F. L.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

G01J 144

Patent

active

044685629

ABSTRACT:
A temperature independent dosimeter is provided for measuring an amount of irradiation of a predetermined frequency. A photodiode (24) operating in its photovoltaic mode is irradiated with the irradiation to produce a signal that is amplitude-proportional to the amplitude of the irradiation. The signal is converted by a pair of operational amplifiers (89, 96) to a plurality of pulses that are proportional in frequency to the amplitude of the signal. The plurality of pulses is counted by a counter (20) and the irradiation is terminated when the count reaches a predetermined amount.

REFERENCES:
patent: 3493753 (1970-03-01), Stowe
patent: 3629587 (1971-12-01), Decupper
patent: 3903422 (1975-09-01), Buhrer
patent: 3917948 (1975-11-01), Strutz
patent: 4010372 (1977-03-01), Adler et al.
patent: 4103167 (1978-07-01), Ellner
patent: 4279254 (1981-07-01), Boschetti et al.

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