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Speckle reduction in double-pass retinal images using variable-focus lenses

Author
Garcia, C.E.; Aldaba, M.; Arjona, M.; Pujol, J.
Type of activity
Journal article
Journal
Journal of the European Optical Society: rapid publications
Date of publication
2015-01-01
Volume
10
First page
15001-1
Last page
15001-6
DOI
https://doi.org/10.2971/jeos.2015.15001 Open in new window
Repository
http://hdl.handle.net/2117/26796 Open in new window
Abstract
Speckle arises in double-pass images when coherent light is scattered by the retina. Since this noise degrades the images that are used to characterize the eye, there is special attention in reducing speckle when working with instruments based on retina reflections. In this work, we present a method for speckle reduction in double-pass retinal images by producing minor periodic variations in the vergence of the beam entering the eye with a variable-focus lens during image recording. Measurements...
Citation
Garcia, C.E. [et al.]. Speckle reduction in double-pass retinal images using variable-focus lenses. "Journal of the European Optical Society: rapid publications", 01 Gener 2015, vol. 10, p. 15001-1-15001-6.
Keywords
ABERRATION, HUMAN EYE, QUALITY, Speckle, WAVE-FRONT SENSOR, metrology, visual optics
Group of research
CD6 - Centre for Sensors, Instruments and Systems Development
GREO - Optical Engineering Research Group

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