An approach to the design of wide-angle optical systems with special illumination and IFOV requirements

Andrey V. Pravdivtsev

doi:10.1117/12.922116

4 May 2012 An approach to the design of wide-angle optical systems with special illumination and IFOV requirements

Andrey V. Pravdivtsev

Proceedings Volume 8429, Optical Modelling and Design II; 84291L (2012) https://doi.org/10.1117/12.922116
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

The article presents the approach to the design wide-angle optical systems with special illumination and instantaneous field of view (IFOV) requirements. The unevenness of illumination reduces the dynamic range of the system, which negatively influence on the system ability to perform their task. The result illumination on the detector depends among other factors from the IFOV changes. It is also necessary to consider IFOV in the synthesis of data processing algorithms, as it directly affects to the potential "signal/background" ratio for the case of statistically homogeneous backgrounds. A numerical-analytical approach that simplifies the design of wideangle optical systems with special illumination and IFOV requirements is presented. The solution can be used for optical systems which field of view greater than 180 degrees. Illumination calculation in optical CAD is based on computationally expensive tracing of large number of rays. The author proposes to use analytical expression for some characteristics which illumination depends on. The rest characteristic are determined numerically in calculation with less computationally expensive operands, the calculation performs not every optimization step. The results of analytical calculation inserts in the merit function of optical CAD optimizer. As a result we reduce the optimizer load, since using less computationally expensive operands. It allows reducing time and resources required to develop a system with the desired characteristics. The proposed approach simplifies the creation and understanding of the requirements for the quality of the optical system, reduces the time and resources required to develop an optical system, and allows creating more efficient EOS.

Citation Download Citation

Andrey V. Pravdivtsev "An approach to the design of wide-angle optical systems with special illumination and IFOV requirements", Proc. SPIE 8429, Optical Modelling and Design II, 84291L (4 May 2012); https://doi.org/10.1117/12.922116

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KEYWORDS

Computer aided design

Distortion

Optical design

Staring arrays

Optimization (mathematics)

Tin

Antireflective coatings

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