COMPACT ACHROMATIC AND PASSIVE OPTICALLY-ONLY ATHERMALIZED TELEPHOTO LENS

摘要

The disclosure relates to infrared achromatic and athermalized narrow-field arrangements without any mechanical compensation mechanism realized by a single convergent front lens and a single divergent correcting lens. The long back focal length allows for cooled and uncooled detectors, different detector sizes, wavebands, and housing materials. A high resolution is achieved with fast f-numbers below f/2.0.