Lenses and mirrors with optical coating.
An optical coating is a thin layer of some concrete material that is deposited on an optical element, such as a lens or a mirror, in order to alter its optical properties (reflection and transmission of light). One type of optical coating is the anti-reflective treatment, used to avoid unwanted reflections on optical surfaces (such as glasses or camera lenses). Another type is the high reflection coating, used in mirrors to improve its optical properties and ensure that up to 99.99% of the incident light is reflected. Other more complex optical coatings allow to reach a high reflection for wavelengths within the step range, and the opposite effect for the rest of wavelengths, thus allowing the manufacture of dichroic components. Types of coating
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