Diffractographic and other sensors utilizing diffraction waves

Details Diffractographic and other sensors utilizing diffraction waves Diffractographic and other sensors utilizing diffraction waves

1976-10-26

1979-09-25

Clark, Conrad J.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356 35, G01B 902

Patent

active

041689119

ABSTRACT:
A method and devices for sensing changes in separation of a first member relative to a second member, as well as variables causing such changes is disclosed. Electromagnetic waves diffracted by means included in said first member interact with waves from means included in said second member to form a characteristic interference pattern. Measured changes in this pattern allow determination of changes in separation.

REFERENCES:
patent: 3308303 (1967-03-01), Weichselbaum
patent: 3495452 (1970-02-01), Johnson
patent: 3518007 (1970-06-01), Ito
patent: 3658429 (1972-04-01), Zipin
patent: 3709610 (1973-01-01), Kruegle
patent: 3742233 (1973-06-01), Gorgens
patent: 3884581 (1975-05-01), Pryor
patent: 3994584 (1976-11-01), Pryor

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