SAN CLEMENTE, Calif., Feb. 23, 2015 — Reynard Corp. has made available custom optical heated windows using conductive materials to keep imaging planes or optical instrumentation windows free of moisture or fog. Patterns can be customized in design to achieve high transmission with matched impedance to meet the requirements of almost any system. The substrate size, shape, and type can also be customized to meet the specific requirements. Key features include customized or standard patterns down to 5-µm line widths, use of highly conductive materials such as ITO or gold, and high transmission in the desired wavelength spectrum from visible to far-infrared. Bus bars added to the edge of the optics provide solder points for electrical leads. Adding an antireflection coating to one or two sides of the optic provides enhanced transmission while providing an extra layer of protection to the conductive surface.