Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1987-03-27
1988-12-27
Willis, Davis L.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
G01B 902
Patent
active
047937084
ABSTRACT:
A symmetric fiber optic sensing coil for use in a rotation sensing device such as a gyroscope. The coil comprises a plurality of turns of a continuous strand of orthogonally wound fiber optic material. The coil may comprise either dualpole or quadrupole symmetry and may be formed on a spool having at least one aperture in each of its circular flanges. The symmetric sensing coil is minimally affected by environmental factors such as temperature, vibration and magnetic fields that can otherwise produce measurements that are indistinguishable from sensed rotation.
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patent: 4410275 (1983-10-01), Shaw et al.
patent: 4445649 (1984-05-01), Yataki et al.
patent: 4699451 (1987-10-01), Mohr
Lender, W. L.; The Orthocyclic Method of Coil Winding; 1961.
Auch et al., Fibre-Optic Gyro with Polarization-Preserving Fibre.
Kramsky Elliott N.
Litton Systems (Canada) Limited
Turner S. A.
Willis Davis L.
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