We propose a high-speed, parallel system for lens aberration measurement employing a confocal optical setup. This method uses a non-interferometric, conventional confocal axial response to determine the spherical aberration coefficient of a confocal objective. The aberration coefficients are successfully calculated from the intensity axial response by employing a neural network. It is estimated...

The next major space-borne observatory, the James Webb Space Telescope, will be a 6.6M field-biased, obscured, three-mirror anastigmat (TMA). Over the used field of view, the performance of TMA telescopes is dominated by 3(rd) order misalignment aberrations. Here it is shown that two dominant 3(rd) order misalignment aberrations arise for any TMA telescope. One aberration, field constant 3(rd) ...

Holographic microscopy combined with forward modeling and inference allows colloidal particles to be characterized tracked in three dimensions high precision. However, current models ignore the effects of optical aberrations on hologram formation. We investigate spherical aberration structure single-particle holograms accuracy particle characterization. find that a typical experimental setup, c...

Unlike light microscopy, where resolution is diffraction limited, the achievable resolution of electron microscopes is limited by lens aberrations so severe that the practical resolution is orders of magnitude worse than the diffraction limit. About 10 years ago, the first practical electron lens spherical aberration correctors were developed, and in the past decade, their performance, versatil...

PURPOSE To determine in vitro image qualities of artificial eyes achieved with spherical, aberration-free, average spherical aberration-correcting, and customized spherical aberration-correcting IOLs in centered, decentered, and tilted positions. METHODS The in vitro performance of these IOL models was determined by optical bench measurements. The experimental setup included a laser light sou...

PURPOSE To evaluate higher-order aberrations (HOAs) after implantation of Artiflex phakic intraocular lenses (pIOLs). SETTING Department of Ophthalmology, Academic Hospital Maastricht, Maastricht, The Netherlands. METHODS This retrospective comparative case series comprised 27 eyes (14 patients) that had Artiflex pIOL implantation and 22 eyes (13 patients) that had Artisan pIOL implantation...

Chromatic aberration is observable especially with wide angle lenses. This paper presents a study on chromatic aberration of two fisheye lenses. Both tested lenses produce images with obvious colour aberration. Four different mathematical models were tested to compensate the aberration of distinct colour channels; shift and scale, affine, projective and polynomial. The model parameters were obt...

PURPOSE To evaluate the correlation between refractive error and higher-order aberrations (HOAs) in patients with myopic astigmatism. METHODS HOAs were measured using the Zywave II aberrometer over a 6 mm pupil. Correlations between HOAs and myopia, astigmatism, and age were analyzed. RESULTS One hundred and twenty-six eyes of 63 subjects with mean age of 26.4±5.9 years were studied. Mean s...

For some time the writer has been seeking improved understanding of the several kinds of aberration—these being rather superficially explained in most texts, particularly texts of relativity theory. Indeed, in some of the more highly regarded of these (e.g., Møller 1972) the phenomenon of stellar aberration is so slightingly treated that use of the formulas provided would literally yield wrong ...