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AssigneeThe Regents of the University of California
InventorsRobert Chow, Gary E. Loomis, Ian M. Thomas
Estimating the term…
Variable index optical single-layers, optical multilayer, and laser-resistant coatings were made from a perfluorinated amorphous polymer material by physical vapor deposition. This was accomplished by physically vapor depositing a polymer material, such as bulk Teflon AF2400, for example, to form thin layers that have a very low refractive index (.about.1.10-1.31) and are highly transparent from the ultra-violet through the near infrared regime, and maintain the low refractive index of the bulk material. The refractive index can be varied by simply varying one process parameter, either the deposition rate or the substrate temperature. The thus forming coatings may be utilized in anti-reflectors and graded anti-reflection coatings, as well as in optical layers for laser-resistant coatings at optical wavelengths of less than about 2000 nm.
An optical multilayered coating having a refractive index of about 1.10 to about 1.30, made by a process which includes:
An optical multilayer coating composed of layers of polymer material and layers of a dielectric material, made by a process which includes:
A transparent, optical multilayer and laser-damage resistant coating consisting of layers of a physical-vapor-deposited transparent perfluorinated amorphous polymer material, at least one of said layers having a refractive index different than the refractive index of at least one other of said layers, thereby providing a variable index of refraction, said coating having a index of refraction in the range of about 1.10 to about 1.30.
Dependencies are inferred from the claim text.