Optical system for control of longitudinal displacement

Sergei Constantin Dick; Igor V. Markhvida; Leonid Victorovic Tanin

doi:10.1117/12.28061

1 February 1991 Optical system for control of longitudinal displacement

Sergei Constantin Dick, Igor V. Markhvida, Leonid Victorovic Tanin

Proceedings Volume 1454, Beam Deflection and Scanning Technologies; (1991) https://doi.org/10.1117/12.28061
Event: Electronic Imaging '91, 1991, San Jose, CA, United States

Abstract

In the present paper, a system for determining longitudinal displacement of an object is described. In this system the laser radiation is modulated by a rotating diffuser and it creates a dynamic specklefield whose intensity is analyzed by a low-frequency spectrum analyzer. A change in the geometrical parameters of the system due to varying the distance between the radiating head fixed on the object and the receiving unit with a diffuser changes the intensity fluctuation spectrum, which permits determining the displacement. The system is simple in design.

Citation Download Citation

Sergei Constantin Dick, Igor V. Markhvida, and Leonid Victorovic Tanin "Optical system for control of longitudinal displacement", Proc. SPIE 1454, Beam Deflection and Scanning Technologies, (1 February 1991); https://doi.org/10.1117/12.28061

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