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Tuning field depth at high resolution by pupil engineering
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 …
of nonuniform optical windows, either for increasing focal depth [by regulating the width of …
Phase pupil functions for reduction of defocus and spherical aberrations
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 …
depth and alleviate third-order spherical aberration (SA) effects. The radial symmetry of …
Infrared imaging with a wavefront-coded singlet lens
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 …
imaging system. Diffraction-limited imaging is demonstrated with a simple singlet which …
Miniaturization of zoom lenses with a single moving element
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 …
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
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 …
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
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 …
correction with properly designed diffractive optical elements. Results of the computer …
Phase mask selection in wavefront coding systems: A design approach
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 …
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
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 …
achieve a large focal depth in incoherent imaging systems. Traditional optical system design …
Frequency analysis of the wavefront-coding odd-symmetric quadratic phase mask
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 …
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
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 …
symmetrical conjugating phase masks. The method is based on the generation of synthetic …