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Optical coatings for sorting systems
Precision for recycling and material separation
Efficient sorting processes in recycling plants, packaging logistics, and industrial applications require maximum precision. Optical coatings for sensors and cameras are crucial in this regard: they minimize reflections, filter out interfering light, and ensure reliable material detection. At Bte Born, we develop customized solutions for your sorting applications.
Why optical coatings are indispensable for sorting systems
Optical sorting systems work with sensors and cameras that recognize materials based on color, shape, and spectral properties. High-quality coatings are required to ensure that these systems function without interference:
- Anti-reflective coatings reduce disruptive light reflections and increase image contrast.
- Optical filters block ambient light and only allow relevant wavelengths to pass through (e.g., IR, NIR, SWIR ranges).
- Highly reflective mirrors precisely redirect optical signals in complex geometries.
Solutions for recycling and material sorting
Filters for precise material detection
In recycling plants, plastics must be sorted not only by material but also by color. Our daylight filters and bandpass filters separate interfering light from the useful signal and enable reliable detection, even with fast conveyor belts and in difficult lighting conditions.
Infrared filters for LIBS systems
For the analysis of material compositions in LIBS systems, we offer IR longpass filters and NIR filters that precisely separate emissions.
Customized coating solutions
Whether anti-reflective coatings, mirrors, or complex filters: we tailor each solution individually to your requirements. “Customized” is our standard.
Advantages of our coating technologies
• Higher sorting accuracy thanks to optimized light guidance
• Increased efficiency in automated processes
• Sustainability through precise separation of recyclable materials
Our coatings are manufactured using state-of-the-art PVD thin-film technology such as ion-assisted deposition (IAD) or magnetron sputtering for maximum quality and durability. Further information and specific case studies can be found in our case studies on sensor technology, recycling, and deposit return.
Other possible applications for optical coatings Sorting systems
Optical coatings are also used in many other areas of sorting systems. They improve the performance and durability of optical components, for example in:
- Displays and windows
- EMC shielding
- Laser scanners
- Barcode reading / barcode scanners
- Sensors for waste separation/recycling/
sorting - Infrared sensors
- Sensors for industrial image processing / machine vision
- Positioning systems / position detection / location detection
- Deflection mirrors
Facts
- Certification according to DIN EN ISO 9001:2015 and DIN EN ISO 14001:2015
- Over 30 years of experience in optical coating
- Numerous different coating options, from anti-reflective coatings and optical filters to EMC shielding (ITO)
- A total of 28 vacuum coating systems using different technologies (PVD, E-Beam, IAD, APS, magnetron sputtering)
- Development of customer-specific solutions
- Creation of sample coatings and prototypes
- Single coating, medium and large series possible
- Large selection of substrates and coating of customer-specific materials
- Development and production in Germany
