Ultrathin cameras using annular folded optics.
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.
Tremblay
Eric J
EJ
Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA 92093, USA. etremblay@ucsd.edu
Stack
Ronald A
RA
Morrison
Rick L
RL
Ford
Joseph E
JE