Broadband Antireflection Coatings for Visible Range (380–800 nm)

Multilayer coatings providing low reflectance across the visible spectrum, ensuring high transmission and minimal color distortion. Usually used in imaging systems, sensors, and precision optics.

Average reflectance in the range 380-800 < 0.7% on FS

General Parameters:
Coating Function	AR
Design Wavelength (λ)	380-800 nm
Angle of Incidence (AOI)	0°
Polarization	Unpolarized
Operating Temperature	-40°C to +85°C
Substrate:
Material	N-KZFS4; N-PSK57
Refractive Index (nd)	1,5168
Clear Aperture	≥ 90% of diameter or custom
Coating Properties:
Coating on Front Side	AR
Coating on Back Surface	AR
Optical Performance:
Reflectance (R)	Ra < 0.7%
Transmission (T)	Ta > 97.5 %
Mechanical and Environmental:
Thermal Stability	–40 °C to +85 °C (no degradation) (MIL-C-48497A, ISO 9022-2)
Humidity Resistance	24 h @ 95% RH, 40 °C (MIL-C-48497A, ISO 9211-3)
Abrasion Resistance	Moderate abrasion (MIL-C-48497A, ISO 9211-4, ASTM D1044)
Adhesion	Tape test, no peeling (MIL-C-48497A, ISO 9211-4, ASTM D3359)
Temperature Cycling	–40 °C to +85 °C, 10 cycles (MIL-STD-810H, ISO 9022-2)
Chemical Resistance	Acetone, IPA, no delamination (MIL-C-48497A, ISO 9022-5, ISO 9211-4)

Technology

Plasma Ion Assisted Deposition (PIAD)

Plasma Ion Assisted Deposition (PIAD) is a technology that combines ion/plasma treatment with electron beam evaporation (or other PVD methods) to modify film growing dinamics and to get desired film properties which are impossible to achieve by conventional PVD methods. It is used to deposit conformal optical coatings with high densities on complex surfaces, hard coatings of compound materials, and adherent metal coatings.