Apparatus for measuring the angular displacement of a body

Details Apparatus for measuring the angular displacement of a body Apparatus for measuring the angular displacement of a body

1977-02-09

1978-09-05

Buczinski, S. C.

Optics: measuring and testing

Angle measuring or angular axial alignment

Apex of angle at observing or detecting station

356152, G01B 1126

Patent

active

041115554

ABSTRACT:
A helmet sight system for use in an aircraft in which the angular displacement of the helmet in the reference frame of the aircraft is measured by measurement of the angular displacement of a set of three non-colinear radiation sources, fixed with respect to the helmet, whose angular positions are sensed by a sensor which is fixed with respect to the coordinate reference frame of the aircraft. The radiation sources may be light emitting diodes and the sensor may comprise an aperture having two mutually inclined rectilinear slits and an array of light sensitive charge coupled devices.

REFERENCES:
patent: 3375375 (1968-03-01), Abbey et al.
patent: 3827807 (1974-08-01), Fletcher et al.
patent: 3917412 (1975-11-01), Stoutmeyer et al.
patent: 3951550 (1976-04-01), Slick
patent: 4025192 (1977-05-01), Scholdstrom et al.

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