Open AccessHyper numerical aperture imaging lens using a thin multi reflection Catadioptric optical element
Author(s) -
Tamer T. Elazhary,
Motohiro Nakano,
José M. Sasián
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.015809
Subject(s) - optics , catadioptric system , lens (geology) , numerical aperture , aperture (computer memory) , magnification , reflection (computer programming) , depth of field , simple lens , spectral imaging , computer science , focal length , physics , wavelength , programming language , acoustics
Several state-of-the-art imaging applications require a large operational spectral band, a large field size, and a high numerical aperture (NA). The design of a lens that simultaneously meets these requirements is a challenging task. We present optical designs of hyper NA imaging systems that comprise a multi reflection optical element. Light entering this element reflects multiple times before exiting. The present lens designs are 1.65 NA imaging system that operate in the broad spectral band [486.1 ~656.3 nm], have field size of 1.75 mm, and 20X magnification.