Method and apparatus for calibrating line spectrum irradiance

Details Method and apparatus for calibrating line spectrum irradiance Method and apparatus for calibrating line spectrum irradiance

1990-02-22

1991-07-23

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

2502521, G01J 100, G01J 110, G01J 128

Patent

active

050346067

ABSTRACT:
A method and apparatus for measuring a single-wavelength irradiance employ (1) a reference photosensor unit combining a photodiode having an absolute response at a given wavelength calibrated by a self-calibration process and a precision aperture, (2) a single radiation source of the given wavelength combining a band-pass filter having a pass band only near the given wavelength and a radiation source for producing a line spectrum radiation of the given wavelength, and (3) a radiation illuminometer. The reference photosensor unit is arranged at a distance d from the single radiation source to measure the irradiance thereat, and then the radiation illuminometer is arranged at the position of the reference photosensor unit to calibrate an indicating scale of the radiation illuminometer with respect to the single radiation of the given wavelength in relation with the reference photosensor unit.

REFERENCES:
patent: 3418473 (1968-12-01), Blue
patent: 3851970 (1974-12-01), Adler et al.
patent: 3922095 (1975-11-01), Lee
patent: 4629896 (1986-12-01), Bridgen
patent: 4927266 (1990-05-01), Sugiura et al.
Illuminating Engineering Institute of Japan 71-10 (1987) 646.

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