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AR coatings for maximum clarity and minimal reflection
Our anti-reflective coatings increase transmission, reduce annoying reflections, and improve contrast, individually tailored to your application.
One of the most important coatings for optical applications are reflection-reducing coating systems commonly known as anti-reflective (AR) coatings or anti-reflection coatings. Enhancing transmission efficiency holds paramount importance across numerous applications utilising anti-reflective optical coatings.
We tailor these coatings to specific wavelengths or design them for broad spectral ranges, in accordance with the customer's specifications. This enables us to produce AR coatings optimised for ultraviolet, visible, or infrared wavelengths. The mitigation of surface reflections not only reduces ghosting effects but also amplifies transmission and contrast levels. Depending on the specifications, we employ either single or multi-layer systems. Non-absorbing dielectric layers are used to effectively diminish reflections.
By reducing reflections, disturbing light is avoided and at the same time higher transmission and an improvement in contrast is achieved. AR coatings are often essential for systems with several optical elements, as the AR coatings minimize light losses in optical systems.
We can apply antireflective coatings multispectral, as broadband or narrowband narrowband coating, but also as a single MgF2 layer.
Advantages of anti-reflective coatings
- Reduction of reflection and high transmission in the relevant spectral range
- High transmission for optimal image quality and precise measurements, depending on the application
- Adaptation to predefined wavelengths or broad spectral ranges possible
- Spectral range: 220 nm to 3 µm, optimizable for UV, visible light, and IR
- Multispectral, broadband, or narrowband, exactly as required
- Prevention of disruptive reflections and double images/ghost images
- Improvement of contrast
- Individual layer designs, tailored to the angle of incidence, substrate, and application
- Robust and durable: Stable layers with good resistance, abrasion resistance, and adhesion
- Substrates: Glass (borosilicate, B270, float glass, etc.), plastics, etc.
Application examples of anti-reflective coatings
- Display solutions, also in the automotive sector (e.g. head-up displays)
- Anti-reflective coated optical windows
- Applications in sensor technology and machine vision
- Sensor covers
- Barcode scanners (for example in beverage return machines)
- Inspection systems
- Front windows for high-quality measuring devices
- Windows for camera housings
- Medical devices
- Laser applications, laser sensors, LiDAR
- Infrared optics
FAQ: Frequently asked questions about anti-reflective coatings
Anti-reflective coatings are special coating systems that reduce reflections on optical surfaces and increase light transmission (transmission). They improve contrast and image quality in optical systems.
They reduce annoying reflections, increase transmission, improve contrast and enable precise measurements. They are also robust, durable and individually adaptable.
They can be optimized for ultraviolet (UV), visible and infrared (IR) wavelengths, in the spectral range from 220 nm to 3 μm.
There are single layers such as MgF₂ as well as complex multilayer systems. They can be designed as wideband, narrowband or multispectral coatings.
Typical substrates are glass types such as Borofloat, B270, float glass and various plastics.
The layer design is individually adapted to the angle of incidence, substrate material and the respective application.
They avoid distracting reflections, double vision, and ghosting that can impair the function and quality of optical systems.
In displays (e.g. automotive head-up displays), optical windows, sensor covers, barcode scanners, inspection systems, camera housings, medical devices and laser applications.
Because they minimize light loss, thus improving the efficiency and image quality of the entire system.
Yes, they are characterized by good resistance, adhesion strength and abrasion resistance, making them suitable for demanding applications.
