MEMS scanner based laser projection system for augmented reality
Our researchers' goal was to develop a system for providing nautical information for navigation and optimal decision support on a ship's bridge, to bring the real environment into congruence with augmented content, and to meet the harsh environmental conditions and requirements of the maritime industry.
A 2D MEMS scanner-based laser projection system was developed to generate an image generated from projected laser pixels over a large area, which on the one hand has the necessary requirements in terms of contrast, brightness, stability and refresh rate, and on the other hand ensures the safety of bridge personnel. The basis of the laser projection system is the 2D MEMS scanners developed at ISIT, which deflect a laser beam with suitable beam parameters into a solid angle range of approximately Θ = 60° and Φ = 40°. An essential prerequisite for generating images with a scanning laser projection is the provision of control electronics that operate reliably in terms of precise pixel generation, repeatability and high image stability under the given boundary conditions in shipping. This includes the development of a suitable algorithm that processes the image data in such a way that image distortions, intensity distributions and, for example, amplitude fluctuations that impair the visual impression of a projected image are compensated for or rendered ineffective. The interaction of the MEMS scanner control and image generation must be of a high level of quality to reliably provide information to bridge personnel even under the most adverse conditions.