Proceedings PaperWhat's so different about IR lens design?
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Most lens designers and optical engineers are quite familiar with the many issues regarding lens design for visible systems. Design forms such as the achromatic doublet, the Cooke triplet, the double Gauss, the telephoto lens, wide angle lenses and others have been around for many years and are well documented in the literature. While thermal imaging systems are very similar to their visible counterparts in many ways, they are also different in many other ways. This paper will discuss the many aspects of lens design for the infrared which are different from visible system designs.