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:
Jun. 10, 1986
Filed:
Sep. 08, 1983
Thomas P Coursolle, St. Paul, MN (US);
Patrick J Murphy, Winsted, MN (US);
Rosemount Inc., Eden Prairie, MN (US);
Abstract
A sensor which provides an output signal representative of a parameter such as pressure, includes a reflector, a lens and a waveguide which are relatively movable as a function of the parameter. Light from a light source is transmitted by the waveguide toward the reflector. The lens, which is positioned between the waveguide and the reflector directs the light from the waveguide to the reflector and focuses the reflected light proximate a receiving surface of the waveguide. A sensor housing supports the waveguide, lens and reflector so that a relative physical displacement between the waveguide, lens and reflector occurs which is responsive to the parameter. The light received by the waveguide at its receiving surface is a function of the relative physical displacement, and thus a function of the parameter. The waveguide transmits the received light to a light detector which produces an electrical output signal which is a function of the received light and therefore of the parameter.