Optical design with non-rotationally symmetric field mapping for infrared search and track system

Dat Nguyen Van; Du Dang Xuan; Dat Vu Thanh

doi:10.1117/12.2601926

9 October 2021 Optical design with non-rotationally symmetric field mapping for infrared search and track system

Dat Nguyen Van, Du Dang Xuan, Dat Vu Thanh

Proceedings Volume 11895, Optical Design and Testing XI; 118951I (2021) https://doi.org/10.1117/12.2601926
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

Infrared Search and Track (IRST) System has become the main approach to cover a wide area with high resolution imagery of long-range targets. A fast-steering mirror (FSM) is generally integrated in the optical system to provide back scanned motion for maintaining the line-of-sight stability. However, the conventional optical designs can hold only the center of field relatively stable on the FPA during back-scanning; all other field points may wander during the exposure time due to imaging distortion characteristic of the optical system which reduces the quality of the observed images. This paper reports a lens design with implemented Non-Rotationally symmetric field mapping which can keep all field points stable on the FPA during back-scanning. This lens design covers a large Field of view (FOV) of 10° x 8° for single frame and a maximum scanning angle of 2.16°. With a F/2 SXGA (1280 x 1024) cooled detector, this optical system help scan a large number of objects in a long-range distance at a high scanning rate with diffraction limit performance.

Conference Presentation

Citation Download Citation

Dat Nguyen Van, Du Dang Xuan, and Dat Vu Thanh "Optical design with non-rotationally symmetric field mapping for infrared search and track system", Proc. SPIE 11895, Optical Design and Testing XI, 118951I (9 October 2021); https://doi.org/10.1117/12.2601926

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