Automatic Suppression of Intense Monochromatic Light in Electro-Optical Sensors

Clicks: 256
ID: 112746
2012
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Abstract
Electro-optical imaging sensors are widely distributed and used for many different tasks. Due to technical improvements, their pixel size has been steadily decreasing, resulting in a reduced saturation capacity. As a consequence, this progress makes them susceptible to intense point light sources. Developments in laser technology have led to very compact and powerful laser sources of any wavelength in the visible and near infrared spectral region, offered as laser pointers. The manifold of wavelengths makes it difficult to encounter sensor saturation over the complete operating waveband by conventional measures like absorption or interference filters. We present a concept for electro-optical sensors to suppress overexposure in the visible spectral region. The key element of the concept is a spatial light modulator in combination with wavelength multiplexing. This approach allows spectral filtering within a localized area in the field of view of the sensor. The system offers the possibility of automatic reduction of overexposure by monochromatic laser radiation.
Reference Key
ritt2012sensorsautomatic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Gunnar Ritt;Bernd Eberle;Ritt, Gunnar;Eberle, Bernd;
Journal sensors
Year 2012
DOI
10.3390/s121014113
URL
https://www.mdpi.com/1424-8220/12/10/14113/htm
Keywords
laser dazzling sensor protection spatial light modulator wavelength multiplexing

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