Flexible transparent heaters for temperature control of optical, lens and display assemblies Dontech has introduced the Therma Klear Flex series of thin flexible transparent heaters for use in outdoor, military or avionic applications. The transparent heaters provide the warmth necessary to extend the operating temperature of liquid crystal displays (LCDs) in cold environments (0° to below -40°C) and for anti-fog, anti-icing, and de-icing of optics, sensors and display assemblies.
Applications include avionics displays, vehicle displays, mobile computers, kiosks, and handheld devices. Custom sizes are available up to a 24 inch diagonal. Heaters can be supplied with an optical grade pressure sensitive adhesive for optical coupling purposes.
Heater foils are constructed from Dontech's VCF Series visually transparent conductive coatings applied to flexible optical grade polyester. The conductive coatings are single or multiple-layer, thin film deposited coatings with a resistance from 5 to 200 ohms/sq.
With dielectric enhancements, light transmission of Therma Klear Flex heaters can exceed 90%, allowing for minimal degradation to the optical performance of the assembly. Recommended power settings are from 0.1 to 1.0 watts per square inch.
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