title: Ultrathin cameras using annular folded optics.
abstract: We present a reflective multiple-fold approach to visible imaging for high-resolution, large aperture cameras of significantly reduced thickness. This approach allows for reduced bulk and weight compared with large high-quality camera systems and improved resolution and light collection compared with miniature conventional cameras. An analysis of the properties of multiple-fold imagers is presented along with the design, fabrication, and testing of an eightfold prototype camera. This demonstration camera has a 35 mm effective focal length, 0.7 NA, and 27 mm effective aperture folded into a 5 mm total thickness.
authors.affiliation: Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA 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: Joseph E
authors.initials: JE
authors.lastname: Ford