zinc sulfide lenses for thermal imaging cameras. The lenses are manufactured with a precise sintering and molding process, which utilizes powdered material in a heated press, as opposed to the traditional vapor deposition process. The lenses feature transmission from 8 μm to 12 μm in wavelength, optical surface roughness of less than 0.020 μm on average, and profile errors within 3 μm. In addition, these lenses feature an operating temperature range of -40°F to 176°F (-40°C to 80°C). The new lenses from Premier Electronics are available in 8.6mm, 13mm, 18.8mm, and 35mm, for both 320 and 640 pixel-size imagers.