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. 11, 1998
Filed:
Feb. 07, 1996
Applicant:
Inventors:
Theodore F Zehnpfennig, Acton, MA (US);
Geert Wyntjes, Chelsea, MA (US);
Assignee:
Visidyne, Inc., Burlington, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C / ; G01B / ;
U.S. Cl.
CPC ...
35613903 ; 356-401 ; 356-511 ;
Abstract
An optical measurement system includes: at least one optical beam transmitter; at least one optical beam detector for receiving the optical beam from the transmitter; modulation means for modulating the intensity of the transmitted optical beam; processor means for detecting the fractional and integer phase difference between the intensity modulation of the transmitted beam and the beam received by the receiver; and a calculator device for converting the integer and fractional phase difference into a distance between the transmitter and detector.