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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3805–3819

MEMS-based handheld confocal microscope for in-vivo skin imaging

Christopher L. Arrasmith, David L. Dickensheets, and Anita Mahadevan-Jansen  »View Author Affiliations

Optics Express, Vol. 18, Issue 4, pp. 3805-3819 (2010)

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This paper describes a handheld laser scanning confocal microscope for skin microscopy. Beam scanning is accomplished with an electromagnetic MEMS bi-axial micromirror developed for pico projector applications, providing 800x600 (SVGA) resolution at 56 frames per second. The design uses commercial objective lenses with an optional hemisphere front lens, operating with a range of numerical aperture from NA=0.35 to NA=1.1 and corresponding diagonal field of view ranging from 653 μm to 216 μm. Using NA=1.1 and a laser wavelength of 830 nm we measured the axial response to be 1.14 μm full width at half maximum, with a corresponding 10%-90% lateral edge response of 0.39 μm. Image examples showing both epidermal and dermal features including capillary blood flow are provided. These images represent the highest resolution and frame rate yet achieved for tissue imaging with a MEMS bi-axial scan mirror.

© 2010 OSA

OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(180.1790) Microscopy : Confocal microscopy
(230.4685) Optical devices : Optical microelectromechanical devices

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: October 9, 2009
Revised Manuscript: January 24, 2010
Manuscript Accepted: February 1, 2010
Published: February 11, 2010

Virtual Issues
Vol. 5, Iss. 5 Virtual Journal for Biomedical Optics

Christopher L. Arrasmith, David L. Dickensheets, and Anita Mahadevan-Jansen, "MEMS-based handheld confocal microscope for in-vivo skin imaging," Opt. Express 18, 3805-3819 (2010)

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