INFRARED, Volume. 43, Issue 10, 1(2022)
Design of High-Resolution and Large-Area-Array Athermalized Infrared Optical System
The large field-of-view optical passive astheratization system realized by using ordinary infrared optical materials has a technical problem that the number of lenses is large, and it is difficult to realize the lightweight and miniaturization when this system is applied to the current new high-resolution, large-area-array infrared detectors. To this end, a chalcogenide glass with a low temperature coefficient of refractive index is introduced, and an optical passive anthermalization imaging optical system with a working band of 8--12 m, a field-of-view of 40°×325°, an F-number of 10, and a 1280×1024 detector are designed. The design results show that in the operating temperature range of -55--70℃, the modulation transfer function (MTF) values at the detector characteristic frequency of 42 1p/mm are all greater than 035. The imaging performance of the system is good, which can meet the requirements of practical engineering applications.
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WU Hai-qing. Design of High-Resolution and Large-Area-Array Athermalized Infrared Optical System[J]. INFRARED, 2022, 43(10): 1
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Received: Jul. 23, 2022
Accepted: --
Published Online: Feb. 20, 2023
The Author Email: Hai-qing WU (whqcust@163.com)