Accession Number : ADD010910
Title : Method of Calibrating an Optical Measuring System.
Descriptive Note : Patent Application,
Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC
Personal Author(s) : Robertson,K D
Report Date : 21 Dec 1982
Pagination or Media Count : 9
Abstract : This invention concerns methods and apparatuses for measuring angles and changes in angles by projecting light beams onto mirrors and measuring the angle between the incident and reflected beams. More particularly, it concerns a method for determining the amount, if any, by which a projected beam varies from true horizontal, that is, from perpendicularity to the gravity vector.
Descriptors : *Patent applications, *Optical equipment, *Measuring instruments, *Calibration, Inventions, Mirrors, Angles, Measurement, Reflectance
Subject Categories : Test Facilities, Equipment and Methods
Optical Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE