An innovative anti-reflective coating applied by spraying
As part of its continuous innovation approach, POLYRISE unveils a new patent for a high-tech anti-reflective coating, developed specifically to meet the demanding needs of the automotive, optics and photonics industries. This coating is applied using SAMES’ spray technology to ensure unmatched performance, both in terms of quality and industrial productivity.
An innovation born from a technological partnership
This patent marks an important step in industrial innovation. POLYRISE, an expert in the formulation of advanced sol-gel coatings, has developed an anti-reflective coating composition capable of creating an ultra-thin layer on various substrates, thus guaranteeing high-level optical properties. The coating, designed to reduce light reflections in the UV/Visible or near-IR ranges, optimizes the optical performance of systems such as LiDAR, cameras or vehicle lighting systems.
To apply this coating, POLYRISE called on SAMES, a world leader in efficient spraying technologies for industry. Together, they developed an innovative solution for applying sol-gel anti-reflective treatment by electrostatic-assisted spraying that allows homogeneous and precise deposition of the coating on large flat surfaces or even complex or three-dimensional surfaces. This electrostatic spray technology, combined with a rotating bell, ensures uniform application, with unprecedented speed adapted to the requirements of mass production.
Significant technological advances
The development of this anti-reflective coating is based on a unique sol-gel composition, based on a nanocomposite technology that combines metal oxide nanoparticles specially designed to maximize the efficiency of reducing light reflections and a robust sol-gel matrix. This innovation results in a reflectance of less than 1.5%, and in some cases, less than 0.9%, for wavelengths ranging from UV to near infrared depending on the final applications. This level of performance significantly improves the transmission and precision of optical systems, a crucial issue for high-tech industries.
Spray application, thanks to the technology developed by SAMES, makes it possible to apply homogeneous layers with thicknesses ranging from 70 to 500 nm. This process guarantees thickness control and homogeneity of the wavelengths of anti-reflective optical centering, allowing treated optical windows to have a constant optical function over the entire surface.
A high-performance solution for industry
POLYRISE’s anti-reflective coating, applied using SAMES’ spraying technique, meets the growing needs of the automotive industry, where the reliability and quality of optical systems are essential. Surfaces treated with this coating see their light reflection significantly reduced, thus improving the long-distance detection capacity and speed of sensors, cameras and on-board lighting systems. This improvement in sensor capacity not only contributes to road safety, but also to the precision of driver assistance systems, a rapidly expanding field with the arrival of autonomous vehicles.
In addition, the spraying technique ensures high industrial productivity, with the possibility of treating 1 m² every 30 seconds, an exceptional processing time for this type of application. The speed of execution, coupled with the quality of the deposit, allows manufacturers to optimize their production processes while guaranteeing high performance and a long service life of the treated surfaces.
A highly technical process
The heart of this innovation lies in the electrostatic spraying technology developed by SAMES. The electrostatic rotating bell system transforms the coating into a cloud of extremely fine droplets, which are deposited in a controlled and precise manner on the substrate. This technique guarantees uniform application even on complex surfaces, while minimizing deposition defects such as orange peel or thickness irregularities. The combination of POLYRISE’s advanced coating chemistry and SAMES’ innovative application technology achieves unprecedented technical performance.
In addition to the characteristics of homogeneity and optimized reflectance level, this process offers great application flexibility, since it can be used on a wide range of substrates, such as glass or transparent polymers such as polycarbonate (PC). This opens up prospects for large-scale production in various sectors, with very high adaptability to different performance and quality requirements.
The patent filed by POLYRISE for its anti-reflective coating applied by spray, in partnership with SAMES spray technology, constitutes a true technological revolution. This innovation offers a high-performance, fast and precise solution for industries seeking to improve the quality of their optical systems while optimizing their productivity. Thanks to this synergy between advanced research and industrial technology, POLYRISE and SAMES are positioning themselves as leaders and pioneers in the field of sol-gel optical treatment solutions for complex or large surfaces with a technological offering compatible with high-speed industrial requirements as well as adaptability requirements for industries having to process parts with a high technological content and an advanced aesthetic design.