By Topic

Parallel-ray focusing with flat lens doublets

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $33
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
S. Cornbleet ; University of Surrey, Department of Physics, Guildford, UK

A doublet lens is proposed consisting of two plane parallel discs in contact and composed of nonhomogeneous refractive index media. In the first region incident rays are given an upward curvature by appropriate choice of refractive-index variation, and in the second region this is reversed up to the point where the rays are again parallel to the axis. The ray-tracing technique, for this form of focusing, relies upon the ray integral formula for nonhomogeneous media. A consequence of the design is a short focal-length beam expander with input and output rays parallel to the axis, with applications in laser and ultrasonic spot size reduction, junctions between multimode fibres of differing diameters and in integrated optics.

Published in:

Microwaves, Optics and Antennas, IEE Proceedings H  (Volume:128 ,  Issue: 6 )