Berliner Glas develops and produces optical high-end systems. How does the company ensure high-precision positioning and alignment of electro-optical components?
Joachim Gerike: The comprehensive product portfolio of the Business Unit Medical Applications of Berliner Glas includes multi-chip prism assemblies (RGB and VIS/NIR), autoclavable lenses, and highly complex 3D measurement cameras for digital dental imprints. The production of these types of optical high-end systems requires the precise combination and calibration of optics, mechanics, and electronics. This optimizes imaging properties and reduces imaging errors - even in small, compact systems.
Berliner Glas has created a versatile precision alignment platform for submicron positioning, which is already being implemented in a variety of customer projects. This platform can be used to simultaneously align electro-optical components, such as image sensors, in six degrees of freedom with a precision of up to 200 nm each, and fix them permanently to this accuracy.
What are some typical products that incorporate this new technology?
Gerike: Endoscopes and dental cameras use so-called multi-chip prism assemblies, aiming to split light into its spectral components, record a high-quality image via individual sensors and assemble it electronically. Increasing resolutions from HD to 4k to 8k requires pixel-precise alignment of the sensors in the same degree.
The alignment platform in Berlin facilitates the precise positioning of these and other electro-optical components for various visual processes, including fluorescence imaging techniques. This also applies to the simultaneous alignment of up to four lens systems.