Editing Optical coating (section)

===Transparent conductive coatings===
Transparent [[electrical conduction|conductive]] coatings are used in applications where it is important that the coating conduct electricity or dissipate [[static electricity|static charge]]. Conductive coatings are used to protect the aperture from [[electromagnetic interference]], while dissipative coatings are used to prevent the build-up of [[static electricity]]. Transparent conductive coatings are also used extensively to provide electrodes in situations where light is required to pass, for example in [[flat panel display]] technologies and in many [[photoelectrochemistry|photoelectrochemical]] experiments. A common substance used in transparent conductive coatings is [[indium tin oxide]] (ITO). ITO is not very optically transparent, however. The layers must be thin to provide substantial transparency, particularly at the blue end of the spectrum. Using ITO, [[sheet resistance]]s of 20 to 10,000 [[ohms per square]]<!--This strange unit is correct.--> can be achieved. An ITO coating may be combined with an antireflective coating to further improve [[transmittance]]. Other TCOs (Transparent Conductive Oxides) include AZO (Aluminium doped Zinc Oxide), which offers much better UV transmission than ITO.
A special class of transparent conductive coatings applies to infrared films for theater-air military optics where IR transparent windows need to have ([[Radar]]) stealth ([[Stealth technology]]) properties. These are known as RAITs (Radar Attenuating / Infrared Transmitting) and include materials such as boron doped DLC ([[Diamond-like carbon]]){{Citation needed|date=April 2013}}.