Optics: measuring and testing – By polarized light examination – With light attenuation
Patent
1999-12-22
2000-09-12
Font, Frank G.
Optics: measuring and testing
By polarized light examination
With light attenuation
356367, 356364, G01B 1114
Patent
active
061185396
ABSTRACT:
An optical-fiber polarimetric sensor for measuring the displacement of an object relative to a frame, the sensor comprising a measurement optical fiber secured, over a fraction of its length, both to a central point of the object and to first and second fixed points of the frame, means disposed at one end of the measurement fiber and serving to emit a light beam of determined polarization into said measurement fiber, means for exerting twist on the measurement fiber so as to modify the polarization of the light beam, and means disposed at another end of the measurement fiber and serving firstly to detect the resulting light beam and secondly to determine the displacement of the object by analyzing the polarization modified in this way, wherein said measurement fiber is stripped, over said fraction of its length, of the covering that imparts mechanical strength thereto, and it is slid into a deformable guide sheath fixed both to the rotary object and also to the frame. Preferably, the deformable guide sheath is made of fine steel, and it may lined with a flexible protective sheath.
REFERENCES:
patent: 4358678 (1982-11-01), Lawrence
patent: 4773753 (1988-09-01), Hirose et al.
patent: 5054922 (1991-10-01), Kersey
patent: 5552889 (1996-09-01), Meier
Chakari Ayoub
Clement Michel
Gaumont Eric
Meyrueis Patrick
Font Frank G.
Punnoose Roy M.
Societe Nationale d'Etude et de Construction de Moteurs d'Aviati
LandOfFree
Optical-fiber polarimetric sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical-fiber polarimetric sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical-fiber polarimetric sensor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-100827