Development of a sensor hardened against laser damage independent of wavelength by off-focus imaging

M. Henrichsen; C. Eisele; B. Schwarz; J. Limbach; G. Ritt; S. Dengler; J. Meyer

doi:10.1117/12.3030908

1 November 2024 Development of a sensor hardened against laser damage independent of wavelength by off-focus imaging

M. Henrichsen, C. Eisele, B. Schwarz, J. Limbach, G. Ritt, S. Dengler, J. Meyer

Author Affiliations +

Proceedings Volume 13200, Electro-Optical and Infrared Systems: Technology and Applications XXI; 132000N (2024) https://doi.org/10.1117/12.3030908
Event: Security + Defence, 2024, Edinburgh, United Kingdom

Abstract

The use of lasers on the battlefield is on the rise due to the recent development of ready-to-use laser dazzlers and laser directed energy weapons. Optical camera systems are particularly vulnerable to damage from laser radiation as the incident light is typically focused onto the sensor. Although there are several methods to protect against specific wavelengths, only a few can provide protection across a broad range of wavelengths. This work describes a technique in which the sensor is positioned behind the focal plane, allowing the use of an optical limiting filter on the freed focal plane. The incident radiation is masked by a coded aperture, and the blurred image is reconstructed using computational imaging. Tests show a significant improvement in resistance to laser damage, as well as satisfactory image reconstruction.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

M. Henrichsen, C. Eisele, B. Schwarz, J. Limbach, G. Ritt, S. Dengler, and J. Meyer "Development of a sensor hardened against laser damage independent of wavelength by off-focus imaging", Proc. SPIE 13200, Electro-Optical and Infrared Systems: Technology and Applications XXI, 132000N (1 November 2024); https://doi.org/10.1117/12.3030908

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