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12 March 2012 Foveated endoscopic lens
Nathan Hagen, Tomasz S. Tkaczyk
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Journal of Biomedical Optics, Vol. 17, Issue 2, 021104 (March 2012). https://doi.org/10.1117/1.JBO.17.2.021104
Abstract
We present a foveated miniature endoscopic lens implemented by amplifying the optical distortion of the lens. The resulting system provides a high-resolution region in the central field of view and low resolution in the outer fields, such that a standard imaging fiber bundle can provide both the high resolution needed to determine tissue health and the wide field of view needed to determine the location within the inspected organ. Our proof of concept device achieves 7 ∼ 8  μm resolution in the fovea and an overall field of view of 4.6 mm. Example images and videos show the foveated lens' capabilities.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2012/$25.00 © 2012 SPIE
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Nathan Hagen and Tomasz S. Tkaczyk "Foveated endoscopic lens," Journal of Biomedical Optics 17(2), 021104 (12 March 2012). https://doi.org/10.1117/1.JBO.17.2.021104
Published: 12 March 2012
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Cited by 16 scholarly publications and 41 patents.
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KEYWORDS
Distortion
Endoscopy
Image resolution
Lens design
Prototyping
Objectives
Tissues
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