Accession Number : ADD001702
Title : System for Measuring Rotation Using Polarized Light.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Van Buskirk,Lyman F
Report Date : 18 Feb 1975
Pagination or Media Count : 4
Abstract : The patent describes a system for sensing the rotational orientation of an object such as a pilot's helmet wherein a polarized surface backed by a reflective coating is mounted on the object and illuminated by a rotating, polarized laser beam. The beginning rotational position of the beam, and its position when its polarization matches the polarization of the object-mounted polarizer, are measured by an incremental digital encoder to determine the object's orientation.
Descriptors : *Detectors, *Patents, Rotation, Light, Polarization, Photodetectors, Measurement, Helmets, Remote detectors
Subject Categories : Test Facilities, Equipment and Methods
Distribution Statement : APPROVED FOR PUBLIC RELEASE