Precision optical coating

High-end optical coatings in the spectral range from UV to near infrared for demanding optical components with reasonable delivery times and reliable service - that's optical lens coating made by asphericon. Equipped with state-of-the-art manufacturing and measuring technologies available on the market as well as an experienced team of technicians, we turn your ideas into reality. Discover our types of optical coatings.

Reflection-minimizing coatings, also referred to as anti-reflection coatings, are essential for maximum transmission of optics. Depending on the desired application, we offer single layer coatings, broadband coatings and reflection-minimizing coatings specific for laser applications. It is possible to minimize the reflection to <0.1%, depending on the glass type.

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Single Layer Coating (ARES)

Broadband Coating (ARBB)

Double Layer Coating (ARDS)

Super Broadband Coating (ARSBB)

Multiple Coatings (ARDD)

Absorption-free, stress-minimized optical mirror coatings optimized for various angles of incidence with reflections greater than 99% can be produced for various wavelength ranges with dielectric coatings.

Mirrors can be specialized for single wavelengths (Single High Reflection, or SHR), two wavelengths (Double High Reflection, or DHR) and over a broad spectral range (Broadband High Reflection, or BBHR). Our high-power coatings are optimized for high-performance laser applications.

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Single High Reflection (SHR)/Broadband High Reflection (BBHR)

Metallic mirrors provide a constant level of reflection across a very wide wavelength range. The surfaces are based on metals (e.g. Al, Ag or Au). Metallic mirrors can be protected and their reflectivity enhanced by adding dielectric coatings.

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Silver mirror (AGM)

Aluminium mirror
(ALM)

Gold mirror (AUM)

High-Reflection Aluminium Mirror (ALENHM)

For many applications, various wavebands can be separated with filter coatings. We offer short pass and long pass filters based on dielectric coatings.
Short pass filters allow short wavelengths to pass, while long wavelengths are reflected. In contrast, long pass filters transmit the long wavelengths and reflect the short wavelengths.

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Short-pass Filter (KPF)

Long-pass Filter (LPF)

Beam splitter coatings divide incoming light into a transmitted and a reflected part. Based on thermally very stable dielectric layers, we realize customer-specific desired splitting ratios, typically 50 % / 50 % (R/T) or 30 % / 70 % (R/T).

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Beam Splitter (BS)

Optical coatings for UV, VIS and IR

Specifications optical coating

 Electron Beam EvaporationIon Assisted DepositionMagnetron Sputtering
Substrate size (Diameter)up to 300 mmup to 300 mm15 mm - 250 mm
Spectral range190 - 5100 nm190 - 5100 nm380 - 5100 nm
Stabilitygood   very good   ultra-hard
Residual reflectionRabs < 0.1% (V-Coating)Rabs < 0.1% (V-Coating)Rabs < 0.1% (V-Coating)
Feature-usage of plasma sourcesputter-up technology
ApplicationsARARBB, HRARSBB, HR, Filter
Fast-Lane Service (24/48h)optionaloptionaloptional

Optical coating technologies

Depending on individual properties of the material and the requirements of the optical system, we select the appropriate coating technology for your project. For this purpose electron beam evaporation, ion beam assisted deposition or sputtering can be used.

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