Electro-optical sensor with spatial and spectral filtering capability

Gunnar Ritt; Bernd Eberle

doi:10.1364/AO.50.003847

Electro-optical sensor with spatial and spectral filtering capability

Appl Opt. 2011 Jul 20;50(21):3847-53. doi: 10.1364/AO.50.003847.

Authors

Gunnar Ritt¹, Bernd Eberle

Affiliation

¹ Fraunhofer Institute of Optronics, System Technologies and Image Exploitation, Gutleuthausstrasse 1, 76275 Ettlingen, Germany. gunnar.ritt@iosb.fraunhofer.de

PMID: 21772365
DOI: 10.1364/AO.50.003847

Abstract

We describe a new concept of an electro-optical sensor with the capability of simultaneous spatial and spectral filtering. It is based on a spatial light modulator, and in combination with the technique of wavelength multiplexing, it enables one to manipulate the spectral content of an indicated spot within the field of view of the sensor. This new concept allows the attenuation of monochromatic light of undetermined wavelengths in particular and is of worth for imaging vision systems to suppress unwanted detector overexposure.