The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 1990
Filed:
Mar. 31, 1988
Bruce J Bartholomew, Poway, CA (US);
General Dynamics Corporation Convair Division, San Diego, CA (US);
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.