ZnSe lenses are used to focus or expand laser beams for applications such as infrared imaging, hyper-spectral imaging, optical metrology, laser scanning, spectroscopy, thermal cameras and laser diode systems.
ZnSe lenses can be used to focus a laser beam into a thin line or expand the output of a laser diode into a symmetrical beam in one axis only. They are available in 1 inch and 2 inch dia. sizes with ±0.005 inch CT and feature focal lengths from 5 to 30 inches with ±0.5% tolerance.
Offered with A/R coatings that typically provide 0.5% max. reflectance per surface at 10.6 micron and normal AOI, these ZnSe lenses have a 60-40 scratch-dig surface finish and 1 fringe surface accuracy at 633 nm. Centration error on these ZnSe lenses is 5 Arc-mins. max.
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