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Reducing speckle in double-pass systems using focus tunable lenses

Author
Garcia, C.E.; Aldaba, M.; Arjona, M.; Pujol, J.
Type of activity
Presentation of work at congresses
Name of edition
VII European / I World Meeting in Visual and Physiological Optics
Date of publication
2014
Presentation's date
2014-08-26
Book of congress proceedings
Proceedings of the VII European / I World Meeting in visual and Physiological Optics VPOptics 2014
First page
90
Last page
93
Repository
http://hdl.handle.net/2117/79416 Open in new window
Abstract
Speckle arises in double-pass systems when coherent light is reflected by the retina. Since it degrades the images that are used to characterize the eye, there is special attention in reducing speckle when working with instruments based on retinal reflection. We present in this work the results of reducing speckle in a double-pass system by varying the vergence of the beam entering the eye with an electro-optical liquid lens during the recording of images. An artificial and a real eye were measu...
Citation
Garcia, C.E., Aldaba , M., Arjona, M., Pujol, J. Reducing speckle in double-pass systems using focus tunable lenses. A: European / World Meeting in Visual and Physiological Optics. "Proceedings of the VII European / I World Meeting in visual and Physiological Optics VPOptics 2014". Wroclaw: 2014, p. 90-93.
Keywords
double-pass, optical quality, speckle, tunable lens
Group of research
CD6 - Centre for Sensors, Instruments and Systems Development
GREO - Optical Engineering Research Group

Participants