Precision laser beam deflection detector

Details Precision laser beam deflection detector Precision laser beam deflection detector

1975-09-24

1976-08-31

Smith, Alfred E.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

G02F 101, H01J 3912

Patent

active

039783340

ABSTRACT:
An improved optical measuring system for measuring the deflection or dispement of a beam of coherent light energy is disclosed as including a Faraday rod having magneto-optical properties in conjunction with a polarizer and analyzer at the entrance and exit pupils thereof and a photodetector with lock-in amplifier which, in turn, controls a magnetic control means operatively associated with the Faraday rod.

REFERENCES:
patent: 3675125 (1972-07-01), Jaecklin
patent: 3708747 (1973-01-01), Lesueur
patent: 3754143 (1973-08-01), Lesueur
patent: 3778619 (1973-12-01), Carnel

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