Share Email Print

Journal of Micro/Nanolithography, MEMS, and MOEMS

Development of a MEMS electromagnetic optical scanner for a commercial laser scanning microscope
Author(s): Hiroshi Miyajima
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A microelectromechanical system electromagnetic optical scanner for horizontal scanning in a commercial laser scanning microscope has been developed. Major specifications include mirror size: 4.5×3.3 mm2, resonant frequency: 4 kHz, changeable scan angle: 2.1-16°, mirror flatness: <244 nm, and scan angle stability: <0.1%. Initial development started with prototyping a scanner with polyimide hinge, but the stiffness and the Q-factor of polyimide hinge were found insufficient to realize the required resonant frequency and scan angle. On the other hand, a scanner with single crystal silicon hinge has been successfully developed. The electromagnetic scanner has an electroplated copper driving coil to reduce power consumption. A scanner controller using the output signal from an integrated sensing coil was also developed, and sufficient scan angle stability was obtained. The scanner has survived the life test of over 140 billion cycles. It has successfully satisfied all the specifications including not only the fundamentals such as resonant frequency and maximum scan angle but also the ones for commercial products such as scanning stability and durability. It has been commercialized as a part of our product OLS1100 (later remodeled as OLS1200).

Paper Details

Date Published: 1 April 2004
PDF: 10 pages
J. Micro/Nanolith. MEMS MOEMS 3(2) doi: 10.1117/1.1666879
Published in: Journal of Micro/Nanolithography, MEMS, and MOEMS Volume 3, Issue 2
Show Author Affiliations
Hiroshi Miyajima, Olympus Corp. (Japan)

© SPIE. Terms of Use
Back to Top