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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 2 — Feb. 1, 2012

Adaptive aberration correction of GRIN lenses for confocal endomicroscopy

W. M. Lee and S. H. Yun  »View Author Affiliations

Optics Letters, Vol. 36, Issue 23, pp. 4608-4610 (2011)

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Graded-index (GRIN) lenses serve as a key component for miniature endoscopes because of their small diameters and ease of assembly. However, the nonaplanatic nature of GRIN lenses causes inherent spatial aberrations that lower image resolution and sharpness. Here we present the diagnosis of the aberrations in GRIN probes and the use of adaptive optics to compensate for the wavefront errors in the endoscope. Two different operation schemes based on preset and in situ measurements are demonstrated, both resulting in a substantial reduction of the wavefront error from 0.42 to < 0.1 μm .

© 2011 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(170.2150) Medical optics and biotechnology : Endoscopic imaging
(220.1000) Optical design and fabrication : Aberration compensation

ToC Category:
Imaging Systems

Original Manuscript: August 11, 2011
Revised Manuscript: October 17, 2011
Manuscript Accepted: October 20, 2011
Published: November 28, 2011

Virtual Issues
Vol. 7, Iss. 2 Virtual Journal for Biomedical Optics

W. M. Lee and S. H. Yun, "Adaptive aberration correction of GRIN lenses for confocal endomicroscopy," Opt. Lett. 36, 4608-4610 (2011)

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