We report on a type of digital camera that uses a hexagonal array of silicon photodetectors on a substrate whose surface has parabolic curvature. This elliptical paraboloid shape closely matches the image surface formed by a simple, planoconvex lens. The hexagonal arrangement provides high area coverage with an approximately circular peripheral view. Details of the design strategies and underlying features of the mechanics and optics are described. Full imaging with these parabolic cameras and comparison to planar layouts reveals improved uniformity of illumination and focus across a wide field of view.
Bibliographical noteFunding Information:
Inhwa Jung and Gunchul Shin contributed equally to this work. We thank T. Banks for help in processing by use of facilities at the Frederick Seitz Materials Research Laboratory. The mechanics and materials components of the work were supported by the National Science Foundation under Grant No. ECCS-0824129 and a MURI award. J.S.H. and G.S. acknowledge Korea Science and Engineering Foundation (KOSEF) through the National Research Laboratory Program funded by the Ministry of Science and Technology (Grant No. ROA-2007-000-20102-0).
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)