Anti-reflection coatings and coated articles
OwnerPeter D. Haaland, B. Vincent McKoyinventors
Life of this patent
Estimating the term…
Abstract
Anti-reflection (AR) coatings and coated articles are described. The thickness and composition of the coatings are determined by minimizing the product of the Fresnel reflection coefficients for a coating with the angular- and wavelength-dependent sensitivity of the human visual system to minimize the perceived reflectance for the coated article. A compact chamber is evacuated and flushed with chemically inert gas such as argon or nitrogen. One or more molecular precursors are deposited using plasma-enhanced chemical vapor deposition (PECVD) to form AR films. Single-layer AR coatings based on fluoropolymer films of controlled thickness, as well as organic, organosilicon, and/or inorganic multilayers are described.
Claims15
A transparent or translucent coated article having a perceived reflectance F.sub.AR, wherein F.sub.AR =.function..function.S(.lambda.,.theta.)R(.lambda.,.theta.)d.lambda.d.thet a.
- where
- .lambda. is wavelength,
- .theta. is incident angle,
- S(.lambda.,.theta.) is human sensitivity function as a function of the wavelength and the incident angle, and
- R(.lambda.,.theta.) is an average of p- and s-polarized reflectances, the coated article comprising:
- an optical substrate;
- and
- one or more layers of anti-reflection material coated on at least a portion of said optical substrate, a thickness of said one or more layers of anti-reflection material being selected such that said perceived reflectance F.sub.AR of said coated article is minimized.
Dependencies are inferred from the claim text.