Design of passive athermalized objective lens in 1-5 µm wave band

M. Sravani Latha

doi:10.1117/12.2580014

8 November 2020 Design of passive athermalized objective lens in 1-5 μm wave band

M. Sravani Latha

Proceedings Volume 11525, SPIE Future Sensing Technologies; 1152518 (2020) https://doi.org/10.1117/12.2580014
Event: SPIE Future Sensing Technologies, 2020, Online Only

Abstract

Recent developments in the Infrared detector technology lead to imaging in multiple wave bands (MWIR and SWIR). It demands to development of 1-5 μm Common optics for the integration of SWIR, MWIR, Non Eye safe LRF and Eye safe LRF spectral bands against traditional optics. This common optics module coupled with the detector can meet the demands of 1-5 μm Multi spectral imaging which can improve the visibility in foggy weather, night and bad weather conditions and Multi-function applications like Thermal Imager, Low light imager, Laser Range Finder and Laser Designator. We present a design of a passive athermalized Wide Field of View (WFoV) Objective lens operating in 1-5 micron spectral band for a 1Kx1K format, 10 micron pixel pitch cooled detector. This lens has a 45 deg FoV and operates at F/4. The lens is passively compensated from -30 deg C to +50 deg C to work in all thermal environments.

Conference Presentation

Citation Download Citation

M. Sravani Latha "Design of passive athermalized objective lens in 1-5 μm wave band", Proc. SPIE 11525, SPIE Future Sensing Technologies, 1152518 (8 November 2020); https://doi.org/10.1117/12.2580014

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