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:
Oct. 20, 1987
Filed:
Jan. 29, 1986
Applicant:
Inventor:
Leo Hoogenboom, Ballston Lake, NY (US);
Assignee:
Mechanical Technology Incorporated, Latham, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; G01J / ; G01J / ;
U.S. Cl.
CPC ...
250227 ; 2502 / ;
Abstract
An optical proximity detector including a set of transmitter fibers for directing light to a target and two sets of receiver fibers. One set of receiver fibers is combined with the transmitter fibers to from a central portion which is flanked by the second set of receiver fibers. Two light sensors and a signal processing circuit are also included to generate one output signal which is linear with respect to the distance to the target and is independent of the target reflectance. The detector is especially suited for monitoring targets having widths less than the diameter of the bundle, such as a turbine blade.