Compensating device

Details Compensating device Compensating device

1981-03-27

1983-05-31

Corbin, John K.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01B 902

Patent

active

043858350

ABSTRACT:
A compensating device in combination with a laser interferometer, which laser interferometer comprises a laser (1), a prism (6) rigidly connected to a movable object, a beam splitter prism (2) and a stationary prism (3). The wavelength of the laser light is subject to changes by external factors, for example meteorologic ones. The compensating device includes mechanism (4,5) capable to change the position of the stationary prism (3) in response to and by means of an electric signal, which represents the desired compensation for magnitudes affecting the accuracy of the laser interferometer.

REFERENCES:
patent: 3520613 (1970-07-01), Chitayat
patent: 3809481 (1974-05-01), Schindler
patent: 4053231 (1977-10-01), Fletcher et al.

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