An optical coating is a thin-film deposit used to enhance transmission, change reflective properties, or change the polarization of light transmitted through an optical component. An optical coating may be a simple layer of metal such as aluminum, or it may be a complex dielectric coating formed of multiple thin layers of material, where the composition, thickness, and number of layers is carefully controlled for a precise result. Shanghai Optics is able to provide all types of anti-reflective, high reflective, and partial reflective coatings. Whether you need a single layer anti-reflective coating or complex multilayer dielectric stacks, we can manufacture exactly what you need. Dielectric coatings such as BBAR, V-coatings, dual wavelength coatings, and sharp cut-on and cut-off filters are available in stock. We use a variety of different methods to produce high quality optical coatings. These methods include plasma sputtering, ion beam sputtering, atomic layer deposition, and evaporative deposition. Ion beam sputtering and atomic layer deposition provide the highest spectral performance, high durability and high repeatability; but the manufacturing process is slow and expensive. Evaporative deposition is more budget friendly, and plasma sputtering, or plasma assisted reactive magnetron sputtering, provides a good middle ground with reasonable quality and reasonable performance. To learn more about optical coating from Shanghai Optics, visit: https://www.shanghai-optics.com/design/optical-coating.

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