Patent ID: 7323678
Filing Date: 2008-01-29
Classification: G01D

Abstract:
1. An optical displacement transducer, including a transducing element comprising at least one first optical fiber, having a first end face substantially aligned along an axis and positioned with a small gap between said first end face and a second end face of a reception assembly, said transducer further comprising at least one light source coupled for transmission to said first optical fiber and at least one photo-detector coupled for reception to said reception assembly, said at least first optical fiber and said reception assembly being coupled through said small gap in order to control a corresponding link attenuation, said first end face and second end face being displaceable along said axis and relatively with respect to each other, in order to follow the relative displacement (d) of points associated to said first end face and second end face, wherein said at least one first optical fiber is a Polymer Optical Fiber (POF) having high numerical aperture in a value range around 0.5.