Optical coating

<p>An optical coating is one or more <a href="/facts/Thin-film_optics/lwgIJUwc">thin layers</a> of material deposited on an optical component such as a <a href="/facts/Lens_(optics)/ejlH6n5c">lens</a>, <a href="/facts/Prism_(optics)/eodBFF70">prism</a> or <a href="/facts/Mirror/wMu4u6BB">mirror</a>, which alters the way in which the optic <a href="/facts/Reflection_(physics)/BhcjDs79">reflects</a> and <a href="/facts/Transmittance/xlyCG7ks">transmits</a> light. These coatings have become a key technology in the field of optics. One type of optical coating is an <a href="/facts/Anti-reflective_coating/BN2xVy4k">anti-reflective coating</a>, which reduces unwanted reflections from surfaces, and is commonly used on <a href="/facts/Glasses/ER3sFKmJ">spectacle</a> and <a href="/facts/Camera_lens/TkL6sd1b">camera lenses</a>. Another type is the high-reflector coating, which can be used to produce mirrors that reflect greater than 99.99% of the light that falls on them. More complex optical coatings exhibit high reflection over some range of <a href="/facts/Wavelength/kcJU0ymz">wavelengths</a>, and anti-reflection over another range, allowing the production of <a href="/facts/Dichroism/BvgNMAyz">dichroic</a> <a href="/facts/Dichroic_filter/frH5wglM">thin-film filters</a>.
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Optical coating open-in-new

Optical coating