Optics: measuring and testing – Angle measuring or angular axial alignment – With photodetection remote from measured angle
Patent
1984-07-19
1988-02-02
Buczinski, Stephen C.
Optics: measuring and testing
Angle measuring or angular axial alignment
With photodetection remote from measured angle
356142, 356252, 340705, 350174, G01B 1126
Patent
active
047226013
ABSTRACT:
The apparatus comprises a sighting unit, such as helmet 10 carrying a cathode-ray tube 11 and a semi-reflecting screen 13 enabling a user to view a display superimposed on an outside scene. The sighting unit carries a detector unit 15 which determines the movements of the helmet 10 without reference to apparatus external to the helmet, and preferably comprising some form of gyroscopic apparatus. The helmet also carries a boresight detector 16 which forms part of correction means operable to correct automatically from time to time for errors in the output of the detector unit.
REFERENCES:
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"Eye-Ball Control" by Dan Boyle, Interavia, vol. 34, Sep. 1979, p. 874.
"A Helmet-Mounted Sight System", by Stephenson, et al., GEC Journal of Science and Technology, vol. #46, #1, 1980.
Buczinski Stephen C.
Ferranti plc
Lewis Aaron J.
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