Collimated beam fiber optic position sensor: effects of sample rotations on modulation functions

Haiming Wang

doi:10.1117/1.601152

1 January 1997 Collimated beam fiber optic position sensor: effects of sample rotations on modulation functions

Haiming Wang

Optical Engineering, Vol. 36, Issue 1, (January 1997). https://doi.org/10.1117/1.601152

A reflective intensity-modulation-based fiber optic position sensor is studied. The sensor consists of input and output channels attached with graded-index (GRIN) lenses. The input channel launches a collimated probe beam onto a sample, and then the output channel collects the light reflected and scattered from the sample. Light power from the output channel directly depends on the distance between the sensor head and the sample (the proximity), which defines a modulation function to characterize the sensor. For practical purposes, effects of sample reflectivity on sensor response are discussed for the cases of specularly reflective and Lambertian diffusive samples. Effects of sample rotations are also studied.

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Haiming Wang "Collimated beam fiber optic position sensor: effects of sample rotations on modulation functions," Optical Engineering 36(1), (1 January 1997). https://doi.org/10.1117/1.601152

Published: 1 January 1997

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