Optics: measuring and testing – By dispersed light spectroscopy – Utilizing a spectrometer
Patent
1991-10-18
1993-02-16
Turner, Samuel A.
Optics: measuring and testing
By dispersed light spectroscopy
Utilizing a spectrometer
356356, 356399, 356419, 250566, G01B 1102
Patent
active
051875462
ABSTRACT:
Displacement measurement apparatus (1) shown in FIG. 1 measures the position of a reading means (4) relative to a coded track (2) which carries a sequence of code elements (5). The track is encoded with a binary sequence such that reading a binary word at any position along the track uniquely identifies its position. The binary word is remotely sensed by a decoding means (18) via a fibre optic link (12). Position information is encoded optically by the reading means using an interferometer to frequency modulate the transmitted light and the decoding means has a second interferometer to analyse received light and produce an electrical output representing the binary word.
REFERENCES:
patent: 4428239 (1984-01-01), Johnston
patent: 4636076 (1987-01-01), Pettigrew
patent: 5037206 (1991-08-01), Etzkorn et al.
Thomas Bosselmann et al., Multi-Mode Fiber Coupled Interferometric Position Sensor, Opto 85 21/23 May 1985, pp. 168 and 169.
D. Trouchet et al., Prototype Industrial Multi-parameter F.O. Sensor Using White Light Interferometry, Springer Proceedings in Physics, vol. 44 (1989), pp. 227-233.
Keesee LaCharles P.
Rosemount Limited
Turner Samuel A.
LandOfFree
Displacement measurement apparatus with dual wedge interferomete does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Displacement measurement apparatus with dual wedge interferomete, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Displacement measurement apparatus with dual wedge interferomete will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2151474