MEMS scanners for display and imaging applications

Hakan Urey

doi:10.1117/12.580450

25 October 2004 MEMS scanners for display and imaging applications

Hakan Urey

Proceedings Volume 5604, Optomechatronic Micro/Nano Components, Devices, and Systems; (2004) https://doi.org/10.1117/12.580450
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

Dynamic display and imagin applications demand high performance scanners, which has high frequency (exceeding 10KHz), large scan-angle-mirror-size product (>±10deg.mm), good optical surface quality (<λ/20 static and dynamic flatness), high sensitivity position sensors, and high-torque actuators that are compact and low power. This paper discusses the resolution and other optical performance requirements for diffraction-limited and non-diffraction-limited ligh sources in a scanning system. A set of analytical formulas is presented for calculating the torsion and other four fundamental oscillation mode vibration frequencies. The formulas include the effects of material anisotropy in orthotropic materials, such as Silicon and effective mass and inertia of the flexures. The validity range of formulas are extended by introducing a correction factor based on flexure width and flexure length ratios. The formulas are very efficient for performance trades and optimization. For scanner actuation, we present two compact scanner actuation mechanisms: out-of-plane comb actuator and novel two-coil electromagnetic actuator.

Citation Download Citation

Hakan Urey "MEMS scanners for display and imaging applications", Proc. SPIE 5604, Optomechatronic Micro/Nano Components, Devices, and Systems, (25 October 2004); https://doi.org/10.1117/12.580450

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