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Variable-focus microlenses as a potential technology for endoscopy

Smith, PJ; McCabe, EM; Taylor, CM; Selviah, DR; Day, SE; Commander, LG; (2000) Variable-focus microlenses as a potential technology for endoscopy. In: Conchello, JA and Cogswell, CJ and Wilson, T, (eds.) THREE-DIMENSIONAL AND MULTIDIMENSIONAL MICROSCOPY: IMAGE ACQUISITION PROCESSING VII. (pp. 187 - 192). SPIE-INT SOC OPTICAL ENGINEERING Green open access

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Abstract

Using a new device which contains an array of microlenses whose focal lengths can be electrically varied, we have been able to control the input from one microlens to a single mode fibre using an applied voltage. For such a microlens array many closely-spaced focal spots can be generated in parallel, and electrically switched to address, potentially, an array of receiver fibres. We show how the particular switching characteristics of the device, whereby the lenses switch from diverging to converging, serves in turn to disperse light and to focus it into the fibre.

Type: Proceedings paper
Title: Variable-focus microlenses as a potential technology for endoscopy
Event: Conference on 3 Dimensional and Multidimensional Microscopy - Image Acquisition Processing VII
Location: SAN JOSE, CA
Dates: 2000-01-23 - 2000-01-24
ISBN: 0-8194-3535-X
Open access status: An open access version is available from UCL Discovery
Keywords: microlenses, endoscopy, direct view microscopy
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/2720
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