Journal ArticleDOI
Tolerance analysis of misalignment in an optical system using Shack–Hartmann wavefront sensor: experimental study
Venkataramana Kalikivayi,Venkataramana Kalikivayi,Valiyaparambil Chacko Pretheesh Kumar,K. Kannan,A. R. Ganesan +4 more
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TLDR
In this article, the wavefront aberrations induced by misalignments due to decentration and tilt of an optical component in an optical measurement system are presented and the results are compared with experimental values.Abstract:
The wavefront aberrations induced by misalignments due to decentration and tilt of an optical component in an optical measurement system are presented. A Shack–Hartmann wavefront sensor is used to measure various aberrations caused due to the shifting of the axis and tilt of a lens in the path of an optical wavefront. One of the lenses in an optical system is decentered in the transverse direction and is tilted by using a rotational stage. For each step, wavefront data have been taken and data were analyzed up to the fourth order consisting of 14 Zernike terms along with peak-to-valley and root mean square values. Theoretical simulations using ray tracing have been carried out and compared with experimental values. The results are presented along with the discussion on tolerance limits for both decentration and tilt.read more
Citations
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Standards for reporting the optical aberrations of eyes
TL;DR: An OSA taskforce was formed at the 1999 topical meeting on vision science and its applications and charged with developing consensus recommendations on definitions, conventions, and standards for reporting of optical aberrations of human eyes.
Journal ArticleDOI
Predictor-corrector framework for the sequential assembly of optical systems based on wavefront sensing.
TL;DR: This paper uses a hybrid optical simulation model that comprises virtual and identified component positions that enables prediction of the future wavefront at the detector plane and therefore allows for taking corrective measures accordingly during the assembly process if a user-defined tolerance on the wavefront error is violated.
Journal ArticleDOI
Homogeneous optimization approach for reducing sensitivity of an optical lens system
TL;DR: The proposed sensitivity optimization method can homogenize image performance for the same field under different tolerance values and improves the product yield rate by 15 to 17% compared with a traditional optimization method.
References
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Journal ArticleDOI
History and Principles of Shack-Hartmann Wavefront Sensing
Ben C Platt,Roland Shack +1 more
TL;DR: Enhanced images of satellites are enhanced by inserting a beam splitter in collimated space behind the eyepiece and placing a plate with holes in it at the image of the pupil, which captures a snapshot of the atmospheric aberrations rather than to average over time.
Journal ArticleDOI
Standards for reporting the optical aberrations of eyes.
TL;DR: In response to a perceived need in the vision community, an OSA taskforce was formed at the 1999 topical meeting on vision science and its applications (VSIA-99) and charged with developing consensus recommendations on definitions, conventions, and standards for reporting of optical aberrations of human eyes as discussed by the authors.
Journal ArticleDOI
Wave-front interpretation with Zernike polynomials
Jon Y. Wang,D. E. Silva +1 more
TL;DR: Contrary to the traditional understanding, the classical least-squares method of determining the Zernike coefficients from a sampled wave front with measurement noise has been found numerically stable.
Journal ArticleDOI
SLODAR: measuring optical turbulence altitude with a Shack–Hartmann wavefront sensor
TL;DR: In this article, the vertical distribution of atmospheric optical turbulence above large telescopes is determined from time-averaged spatial cross-correlations of local wavefront slopes for Shack-Hartmann observations of binary stars.
Book
Aberration Theory Made Simple
TL;DR: In this paper, the authors provide a clear, concise, and consistent exposition of what aberrations are, how they arise in optical imaging systems, and how they affect the quality of images formed by them.