Review on methods for wavefront reconstruction from pyramid wavefront sensor data
نویسندگان
چکیده
منابع مشابه
Linearity of the pyramid wavefront sensor.
The pyramid wavefront sensor is very similar to the Fourier knife-edge test, but employs dynamic modulation to quantify the phase derivative. For circular modulation, we compare approximate geometrical optics calculations, more exact diffraction calculations, and experimental results. We show that both the sinusoidal and the approximate linear relationship between wavefront derivative and wavef...
متن کاملAdaptive optics for ophthalmic applications using a pyramid wavefront sensor.
A new adaptive optics system for the eye using a pyramid wavefront sensor interfaced in closed-loop with a piezoelectric deformable mirror is presented. Sensing parameters such as CCD integration time, pupil sampling and beam steering amplitude are tested on the bench and in vivo on several volunteers to optimize real-time optical correction. The system allows closed-loop operation at a frame r...
متن کاملMeasuring Phase Aberrations using a Pyramid Wavefront Sensor
The pyramid wavefront sensor (PWS) was initially proposed by astronomers to measure aberrations introduced by the atmosphere. More recently it has been used to measure aberrations of the human eye, and has been successfully incorporated into an adaptive optics loop to correct those aberrations. The raw sensor signal can be used as feedback to control a wavefront correcting device, or with appro...
متن کاملAlgorithms for Wavefront Reconstruction
Knowing the solution to Helmholtz equation in a narrow band, with a width of order wave length around a scatterer, we investigate the possibility to construct the wave fronts predicted by the asymptotic methods Geometrical Optics (GO) and Geometrical Theory of Diffraction (GTD). More specifically we show how to build a polynomial approximation of the asymptotic solution on a circle around the s...
متن کاملOptical Wavefront Reconstruction: Theory and Numerical Methods
Optical wavefront reconstruction algorithms played a central role in the effort to identify gross manufacturing errors in NASA’s Hubble Space Telescope (HST). NASA’s success with reconstruction algorithms on the HST has lead to an effort to develop software that can aid and in some cases replace complicated, expensive and error-prone hardware. Among the many applications is HST’s replacement, t...
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ژورنال
عنوان ژورنال: Journal of Astronomical Telescopes, Instruments, and Systems
سال: 2020
ISSN: 2329-4124
DOI: 10.1117/1.jatis.6.1.010901