Importance

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Abstract

The disclosure is directed to a distance measurement system for monitoring changes in distances between a source of illumination and a reflective surface. A white light source is directed into a transmit fiber optic element which terminates at a graded index lens (grin) which collimates the light. The light output from the grin lens passes through a single grating or a plurality of different gratings which dispose the white light into a spectrum which is directed to the reflective surface spaced therefrom at an unknown distance. The dispersed light bouncing off the reflective surface enters a receiver fiber optic device connected to a detection system for determining the spaced distance between the grating or gratings and the reflective surface.

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First Claim