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Challenges and Opportunities Applying Laser Beam Scanning Displays Based on Biaxial Resonantly Operated MEMS Scanners
Publikationstyp
Conference Paper
Date Issued
2024-10
Sprache
English
Author(s)
Petrak, Oleg
Berlinski, Jan
Metschulat, Marcel
Boie, Lars
Schmoll, Robert
Studer, Jakob
Start Page
976
End Page
981
Citation
IEEE International Conference on Metrology for eXtended Reality, Artificial Intelligence and Neural Engineering, MetroXRAINE 2024
Contribution to Conference
IEEE International Conference on Metrology for eXtended Reality, Artificial Intelligence and Neural Engineering, MetroXRAINE 2024
Publisher DOI
Scopus ID
ISBN
[9798350378009]
Laser Beam Scanning (LBS) light engines based on two-dimensional (biaxial) resonantly operated and vacuum packaged MEMS scanners, show several advantages over traditional display technologies. Their easy scalability in terms of brightness, resolution, field of view and frame rate makes them well suitable for a wide range of applications including automotive Head-Up Displays (HUD), outdoor displays, 3D sensing and especially compact and fashionable all-day wearable Augmented Reality (AR) glasses. In order that LBS light engines can exploit their unique advantages important challenges must be overcome first. The aim of this paper is to explain the function principle of MEMS based Lissajous laser beam scanning as well as the importance of control loops and optimization mechanisms. Additionally, the resulting opportunities for LBS light engines are highlighted which allows the projector to scale towards the desired resolution, frame rate, field of view or brightness. The achieved projections demonstrating different use cases are visualized by real photographs.
Subjects
AR | HUD | Laser Beam Scanning | LBS | Lissajous | MEMS