Accession Number : ADD013496

Title :   Optical Position Gauge.

Descriptive Note : Patent Application, Filed 30 Oct 86,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Lee, Steve ; Smith, Paul ; Davis, Patrick

Report Date : 30 Oct 1986

Pagination or Media Count : 16

Abstract : This patent discloses apparatus for measuring the direction, extent and rate of linear displacement of a body (e.g. a steel bulkhead) subjected to a harsh environment such as shock from an explosive force. a housing containing an extendable piston is connected between the movable body and a fixed structure. The piston has a surface marked with alternating high and low light reflecting bands which pass under a pair of light emitting optical fibers fixed on the housing. Light reflected from the bands is detected and converted into corresponding out of phase electrical signals for measuring direction, extent and rate of linear displacement of the piston.

Descriptors :   *DISPLACEMENT, *EXPLOSIVES, *FIBER OPTICS, *GAGES, *PISTONS, *PATENT APPLICATIONS, BULKHEADS, ELECTRICITY, EMISSION, EXTENDABLE STRUCTURES, FIBERS, LIGHTWEIGHT, MEASUREMENT, MOBILE, OPTICAL PROPERTIES, POSITION(LOCATION), RATES, SIGNALS, STEEL

Subject Categories : Test Facilities, Equipment and Methods
      Optics
      Reciprocating and Rotating Engines
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE