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Electromagnetically actuated 2-axis scanning micromirror with large aperture and tilting angle for lidar applications

Title
Electromagnetically actuated 2-axis scanning micromirror with large aperture and tilting angle for lidar applications
Authors
Kim J.H.Lee S.W.Jeong H.S.Lee S.K.Ji C.H.Park J.H.
Ewha Authors
지창현
SCOPUS Author ID
지창현scopus
Issue Date
2015
Journal Title
2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
Keywords
Electromagnetically actuated micromirrorLIDARSiOG (Silicon On Glass) wafer
Publisher
Institute of Electrical and Electronics Engineers Inc.
Indexed
SCOPUS scopus
Abstract
This paper presents electromagnetically actuated 2-axis scanning micromirror with large aperture and tilting angle for laser pointing applications such as LIDAR systems. The 2-axis micromirror with the plate size of 3 mm in diameter was fabricated using gimbaled single crystal silicon with a coil and assembled with permanent magnet forming radial magnetic field. The micromirror was realized on SiOG (Silicon on Glass) wafer using 4 photolithography masks and the magnet assembly was optimized to maximize the torque. Horizontal resonance frequency of manufactured micromirror was measured 1.421 kHz and vertical resonant frequency was 396 Hz. The vertical scan angle was 16.87°, 26.32° and 22.61 ° with the cylindrical magnet diameter of 2.6 mm, 4.0 mm and 4.8 mm respectively. Horizontal maximum scan angle was 24.45° using a cylindrical magnet with the diameter of 4.0 mm. Proposed 2-axial electromagnetically actuated large size micromirror is expected to be applicable to LIDAR system because it can handle high power laser and fast 2-dimensional scanning. © 2015 IEEE.
DOI
10.1109/TRANSDUCERS.2015.7181054
ISBN
9781479989553
Appears in Collections:
엘텍공과대학 > 전자공학과 > Journal papers
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