Tuning field depth at high resolution by pupil engineering

J Ojeda-Castaneda… - Advances in Optics and …, 2015‏ - opg.optica.org
We present a simple comprehensive treatment on the use of free-form optical elements, and
of nonuniform optical windows, either for increasing focal depth [by regulating the width of …

Phase pupil functions for reduction of defocus and spherical aberrations

S Mezouari, AR Harvey - Optics letters, 2003‏ - opg.optica.org
Radially symmetric pupil plane phase retardation functions are derived that extend focal
depth and alleviate third-order spherical aberration (SA) effects. The radial symmetry of …

Infrared imaging with a wavefront-coded singlet lens

G Muyo, A Singh, M Andersson, D Huckridge… - Optics express, 2009‏ - opg.optica.org
We describe the use of wavefront coding for the mitigation of optical aberrations in a thermal
imaging system. Diffraction-limited imaging is demonstrated with a simple singlet which …

Miniaturization of zoom lenses with a single moving element

M Demenikov, E Findlay, AR Harvey - Optics express, 2009‏ - opg.optica.org
We present an analysis of single-moving-element zoom lenses in the thin-lens limit and
show how the length of these zoom lenses is determined by the zoom-factor, sensor …

Optimized circularly symmetric phase mask to extend the depth of focus

F Zhou, R Ye, G Li, H Zhang, D Wang - Journal of the Optical Society …, 2009‏ - opg.optica.org
We propose a novel design method for a circularly symmetric phase mask to extend the
depth of focus. Using the free-form rational function as the solution space, we optimize the …

Extended focus diffractive optical element for Gaussian laser beams

MA Golub, V Shurman, I Grossinger - Applied Optics, 2006‏ - opg.optica.org
The depth of focus of the Gaussian beam is extended by introducing a wavefront phase
correction with properly designed diffractive optical elements. Results of the computer …

Phase mask selection in wavefront coding systems: A design approach

G Carles, A Carnicer, S Bosch - Optics and Lasers in Engineering, 2010‏ - Elsevier
A method for optimizing the strength of a parametric phase mask for a wavefront coding
imaging system is presented. The method is based on an optimization process that …

Amplitude and phase filters for mitigation of defocus and third-order aberrations

S Mezouari, G Muyo, AR Harvey - Optical Design and …, 2003‏ - spiedigitallibrary.org
This paper gives a review on the design and use of both amplitude filters and phase filters to
achieve a large focal depth in incoherent imaging systems. Traditional optical system design …

Frequency analysis of the wavefront-coding odd-symmetric quadratic phase mask

M Somayaji, MP Christensen - Applied optics, 2006‏ - opg.optica.org
A mathematical analysis of the frequency response of the wavefront-coding odd-symmetric
quadratic phase mask is presented. An exact solution for the optical transfer function of a …

Extended depth-of field imaging by both radially symmetrical conjugating phase masks with spatial frequency post-processing

LV Nhu, C Kuang, X Liu - Optics Communications, 2018‏ - Elsevier
In this paper, we propose a method to improve the contrast of image by using both radially
symmetrical conjugating phase masks. The method is based on the generation of synthetic …