Surface-micromachined electrostatic-comb driven scanning micromirrors for barcode scanners

This paper describes the design and fabrication of micromachined resonant scanners that have large scan angles at fast scan speeds. Driven by an electrostatic comb motor, these 200 /spl mu/m by 250 /spl mu/m scanning-micromirrors can scan about 12/spl deg/ (optical) at the resonance frequency of 3 k...

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Main Authors: Meng-Hsiung Kiang, Solgaard, O., Muller, R.S., Lau, K.Y.
Format: Conference Proceeding
Language:English
Subjects:
Biomedical optical imaging
Costs
Electrostatics
Integrated optics
Micromirrors
Micromotors
Mirrors
Optical device fabrication
Resonance
Silicon
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creator Meng-Hsiung Kiang
Solgaard, O.
Muller, R.S.
Lau, K.Y.
description This paper describes the design and fabrication of micromachined resonant scanners that have large scan angles at fast scan speeds. Driven by an electrostatic comb motor, these 200 /spl mu/m by 250 /spl mu/m scanning-micromirrors can scan about 12/spl deg/ (optical) at the resonance frequency of 3 kHz with a sinusoidal voltage input of 20 V in amplitude. Fabricated with a four-poly-layer silicon-surface-micromachining process, these resonant scanners are compact, extremely light in weight, and potentially very low in cost. The power consumption is also minimal since the capacitive motor draws very little current. We have demonstrated the scanner as a laser-beam deflector in a barcode reader, a potentially important application that has a growing popularity in many industries.
doi_str_mv 10.1109/MEMSYS.1996.493852
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ispartof Proceedings of Ninth International Workshop on Micro Electromechanical Systems, 1996, p.192-197
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Biomedical optical imaging
Costs
Electrostatics
Integrated optics
Micromirrors
Micromotors
Mirrors
Optical device fabrication
Resonance
Silicon
title Surface-micromachined electrostatic-comb driven scanning micromirrors for barcode scanners
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