Mr. Volker Hachtel Profile

Volker Hachtel

Project Consultant at Mirrorcle Technologies Inc

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Proceedings Article | 27 February 2015 Paper

High brightness MEMS mirror based head-up display (HUD) modules with wireless data streaming capability

Veljko Milanovic, Abhishek Kasturi, Volker Hachtel

Proceedings Volume 9375, 93750A (2015) https://doi.org/10.1117/12.2082848

KEYWORDS: Heads up displays, Mirrors, Microelectromechanical systems, Neodymium, Laser applications, Semiconductor lasers, Visualization, RGB color model, Raster graphics, Diffusers

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A high brightness Head-Up Display (HUD) module was demonstrated with a fast, dual-axis MEMS mirror that displays vector images and text, utilizing its ~8kHz bandwidth on both axes. Two methodologies were evaluated: in one, the mirror steers a laser at wide angles of <48° on transparent multi-color fluorescent emissive film and displays content directly on the windshield, and in the other the mirror displays content on reflective multi-color emissive phosphor plates reflected off the windshield to create a virtual image for the driver. The display module is compact, consisting of a single laser diode, off-the-shelf lenses and a MEMS mirror in combination with a MEMS controller to enable precise movement of the mirror’s X- and Y-axis. The MEMS controller offers both USB and wireless streaming capability and we utilize a library of functions on a host computer for creating content and controlling the mirror. Integration with smart phone applications is demonstrated, utilizing the mobile device both for content generation based on various messages or data, and for content streaming to the MEMS controller via Bluetooth interface. The display unit is highly resistant to vibrations and shock, and requires only ~1.5W to operate, even with content readable in sunlit outdoor conditions. The low power requirement is in part due to a vector graphics approach, allowing the efficient use of laser power, and also due to the use of a single, relatively high efficiency laser and simple optics.

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