System models for IR diffractive optical systems based on a coherence theoretic framework

Nikola Subotic; M. Eismann; C. Roussi; J. Meola; B. Koziol

doi:10.1117/12.735902

26 September 2007 System models for IR diffractive optical systems based on a coherence theoretic framework

Nikola Subotic, M. Eismann, C. Roussi, J. Meola, B. Koziol

Proceedings Volume 6714, Adaptive Coded Aperture Imaging and Non-Imaging Sensors; 67140F (2007) https://doi.org/10.1117/12.735902
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

Diffractive optical systems in the Infrared (IR) wavelength regime are being re-examined for remote sensing applications. A pupil-plane adaptive coded aperture can enable a fine resolution, wide field of view sensor system without mechanical scanning. Due to the relatively long wavelengths, coded aperture systems in the IR have unique issues in regards to e.g. X-ray coded apertures. These include diffraction effects, wavelength dependence of optical elements, off axis aberrations due to thick screens, etc. In this paper, we provide a general system model framework based on partial coherence theory that enables us to explore many of the technical challenges in IR diffractive imaging. This paper develops the general theory and shows examples of issues that impact the optical transfer function (OTF) and impulse response of these types of architectures.

Citation Download Citation

Nikola Subotic, M. Eismann, C. Roussi, J. Meola, and B. Koziol "System models for IR diffractive optical systems based on a coherence theoretic framework", Proc. SPIE 6714, Adaptive Coded Aperture Imaging and Non-Imaging Sensors, 67140F (26 September 2007); https://doi.org/10.1117/12.735902

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KEYWORDS

Coded apertures

Systems modeling

Point spread functions

Imaging systems

Optical transfer functions

Infrared imaging

Sensors

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