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This paper presents a handheld device for reflectance confocal imaging of biological tissue. A two-dimensional fiber optic raster scanner has been designed, manufactured and assembled in standard half-inch lens tubes. The scanner is driven by electromagnetic forces and provides large actuation range of ≥1 mm in both directions with driving current of ≤ 200 mA. Light polarization effects have been...
A fiber optic catheter with a MEMS (Microelectromechanical Systems) scanning microlens is demonstrated in this paper. Biological tissue thickness measurement using confocal scanning is presented. The catheter has an outer diameter and a rigid length of 4.75 mm and 30 mm respectively. Thickness of biological tissue is measured by out-of-plane actuation of the microlens using a micro magnetic actuator...
This paper presents a novel dual-axes scanning microlens for in vivo near infrared (NIR) Raman spectroscopy. In vivo Raman spectra of fibrosarcoma tumor skin and normal mouse skin measured from the microlens are reported. Out-of-plane (Z-axis) and transverse (X-axis) actuations are demonstrated using electrostatic and electromagnetic forces, respectively. The microlens achieves 120 mum scan in Z-axis...
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