New Computar SWIR (Short Wave Infrared) type lenses from CBC America, Inc. are offered in 16mm, 25mm, 35mm, and 50mm focal lengths. These 2/3" format (for up to 12.3mm image circle) fixed focal length models are megapixel quality - yet very economically priced for various types of hyperspectral imaging.
These lenses are designed to operate in the 800-1700nm range, have locking screw feature for both focus and iris, and have M30.5 x P0.5 filter threads.
Here are links to product details, pricing, and ordering for each model:
Computar M1614-SW 16mm SWIR type
Computar M2514-SW 25mm SWIR type
Computar M3514-SW 35mm SWIR type
Computar M5018-SW 50mm SWIR type