Method of detecting the position of an object

Details Method of detecting the position of an object Method of detecting the position of an object

1988-07-05

1989-11-14

Scott, Jr., Leon

Optics: measuring and testing

By polarized light examination

With light attenuation

G01B 1114

Patent

active

048803073

ABSTRACT:
In a position detection system when a preselected parameter magnitude of a signal produced in response to a received reflected laser beam, is excessively high, the power of the laser is reduced until such a satisfactory level is reached. On the other hand when the signal level is low and laser power cannot be increased further, signal amplification is induced until such time as the required level is produced.

REFERENCES:
patent: 4299491 (1981-11-01), Waters et al.

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