Patent · US Expired

Calibratable optical distance sensing system and method

US5530548A · kind A · utility

30Cited by
3References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 7, 1994
Grant dateJun 25, 1996
Priority date—
Expiry dateNov 7, 2014

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01B11/026
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A calibratable optical distance measuring system (100) and method of calibrating the same utilizes a plurality of electronic calibration constants stored in memory (118) to compensate the measurement output of a position sensitive detector element (18) for variations in physical design and circuit performance parameters. The method of calibrating includes generating the plurality of electronic calibration constants by placing the optical distance measuring system (100) into a calibration fixture (200 or 208) where at least one target object is moved into known distances, and the calibration constants are determined based on the system's measurements of the known distances.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.