title: Ultrathin four-reflection imager.
abstract: We present the design and experimental demonstration of an ultrathin four-reflection imager. The F/1.15 prototype imager achieves a focal length of 18.6 mm in a track length of just 5.5 mm, providing a 17 degrees field of view over 1.92 megapixels of a color image sensor with 3 microm pixels. We also present the design and experimental results of pupil-phase encoding and postprocessing, which were applied to extend the depth of field and compensate a small amount of axial chromatic aberration present in the four-reflection imager prototype.
authors.affiliation: Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093, USA. etremblay@ucsd.edu
authors.forename: Eric J
authors.initials: EJ
authors.lastname: Tremblay
authors.forename: Ronald A
authors.initials: RA
authors.lastname: Stack
authors.forename: Rick L
authors.initials: RL
authors.lastname: Morrison
authors.forename: Jason H
authors.initials: JH
authors.lastname: Karp
authors.forename: Joseph E
authors.initials: JE
authors.lastname: Ford