Solayer achieves technical breakthrough in the development of high-performance optical filters (hydrogenated amorphous silicon) for 3D acquisition.
The company innovates vacuum coating systems and processes for high-precision optical applications. The new technical milestone confirms SOLAYER's approach to solving distortion and promises customers a practical new solution to enable next generation 3D sensors.
Consumer electronics such as smartphones and video games rely on 3D sensor technologies for core functions such as geolocation functions, high-end photography and immersive virtual/augmented reality experiences. The technology also enables biometric markers for cybersecurity, robotics in medical and industrial environments, advanced imaging devices for medical diagnostics, and intelligent cars in which sensors enhance driver safety.
To achieve the high-performance filters, SOLAYER had to overcome the challenges associated with extremely thin substrates, namely the warpage caused by the coating process. Such warping can impede and even restrict subsequent processing steps.
Using a special manufacturing process, SOLAYER was able to coat substrates with a thickness of 0.2 mm and a diameter of 200 mm and to produce a substrate deflection of less than 11 mm. This is an improvement over conventional processes, which could only achieve a deflection of > 13 mm. The SOLAYER processes not only allow a low deflection, but can also be used to produce filters with a very high transmission T avg > 96 %. At an angle of incidence of 30° (AOI 30°) the bandpass filter shows only a shift of < 10.5 nm.
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