Therma Klear transparent heaters provide warmth to extend the operating temperature of LCDs in cold environments, from 0°C to below -40°C, and for anti-fog, anti-icing, and de-icing of optics and optical camera, sensor, and display assemblies. They employ an electrically-conductive coating on a transparent substrate. Current flows across the coating to generate heat. Custom shapes are available in sizes up to 24” in diameter. The company can also optically match the properties of the conductive coating to improve reflection and transmission properties in the desired optical band. DONTECH INC., Doylestown, PA. (215) 348-5010.