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Sensors, Optical

  1. Jörg Haus,
  2. Roland Schaefer

Published Online: 15 JUL 2005

DOI: 10.1002/3527600434.eap426.pub2

Encyclopedia of Applied Physics

Encyclopedia of Applied Physics

How to Cite

Haus, J. and Schaefer, R. 2005. Sensors, Optical. Encyclopedia of Applied Physics. .

Author Information

  1. CORRSYS-DATRON Sensorsysteme GmbH, Wetzlar, Germany

Publication History

  1. Published Online: 15 JUL 2005


In terms of dynamic range and noise, optical sensors have great advantages over their electronic or mechanical counterparts. In addition, the noncontact nature of all optical measurements avoids influences of the sensor on the measured value and, thus, measurement-introduced systematic errors. This article gives an introduction to the components found in all kinds of optical sensors: light sources, detectors, and optical elements. On the basis of this optoelectronic toolbox, sensors for the measurement of various physical and chemical quantities are described.


  • optical sensors;
  • light sources;
  • photodetectors;
  • optical elements;
  • optical metrology