Slit width calibrator for monochromator

Details Slit width calibrator for monochromator Slit width calibrator for monochromator

1979-10-29

1982-04-20

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With monochromator structure

356332, 356334, G01J 312, G01J 318

Patent

active

043256341

ABSTRACT:
At least one of the entrance slit and the exit slit of a monochromator is capable of being opened or closed. The light issued from the exit slit when the slit width is changed is detected by a light detector. The slit width is calibrated when the ratio between the maximum value of the output of the light detector and the output of the light detector with the slit being gradually closed subsequently reaches a predetermined value, in other words, when a predetermined narrowness of the slit is attained. The slit width is controlled by a pulse motor or the like. The pulses supplied to the pulse motor are counted by a counter. At the time of slit width calibration, a value corresponding to the particular slit width is set in the counter, thus performing the slit width calibration.

REFERENCES:
patent: 2741941 (1956-04-01), Madsen et al.
patent: 3160697 (1964-12-01), Jacobs et al.
patent: 3748040 (1973-07-01), Hawes

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