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
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE