Results 231 to 240 of about 94,721 (285)
Some of the next articles are maybe not open access.
Bilinear wavefront transformation
Journal of the Optical Society of America A, 2009Truncated expansions such as Zernike polynomials provide a powerful approach for describing wavefront data. However, many simple calculations with data in this form can require significant computational effort. Important examples include recentering, renormalizing, and translating the wavefront data.
openaire +2 more sources
A reference wavefront for wavefront sensing instruments
Workshop on Optical Fabrication and Testing, 1986A reference light source (RLS) was designed to allow the measurement and removal of system wavefront errors in wavefront sensing instruments. The wavefront of the RLS is produced by collimating and re-focussing the output of a laser diode onto a 1 micron pinhole aperture.
Lars A. Selberg, Bruce E. Truax
openaire +1 more source
Ptychographic wavefront cameras
Optics LettersWe introduce a snapshot wavefront camera capable of reconstructing the complex field of an object with near quantum-limited accuracy. This system incorporates a diffraction grating at the entrance aperture and an array of cameras positioned to align with the grating orders, capturing the field with varying impulse responses.
Ni Chen, David Brady
openaire +2 more sources
Wavefront guided and custom wavefront refractive surgery
Acta Ophthalmologica, 2010AbstractAbstract not ...
openaire +1 more source
Nonparametric narrowband wavefront estimation from wavefront gradients
IEEE Transactions on Signal Processing, 1999The wavefield sampled by a two-dimensional (2-D) planar array can he characterized by a delayed signal. This correspondence investigates the problem of the nonparametric estimation of the delay function (or wavefront) when the waveform is narrowband. The wavefront is estimated by integrating the local estimates of the differential time of delay (TOD ...
openaire +1 more source
A comparison of wavefront-optimized and wavefront-guided ablations
Current Opinion in Ophthalmology, 2009Optimized aspherical as well as custom wavefront-guided treatments attempt to reduce the induction of visually disturbing aberrations than can occur with conventional spherocylindrical corneal ablation. This review highlights a comparison of the advances and limitations of the two treatments.Optimized aspherical as well as wavefront-guided corneal ...
Elliott H, Myrowitz, Roy S, Chuck
openaire +2 more sources
Journal of Cataract & Refractive Surgery, 2021
Scott M, MacRae, Geunyoung, Yoon
openaire +2 more sources
Scott M, MacRae, Geunyoung, Yoon
openaire +2 more sources
Deep learning wavefront sensing and aberration correction in atmospheric turbulence
PhotoniX, 2021Kaiqiang Wang, Jianglei Di, Jianlin Zhao
exaly
Wavefront Reconstruction Methods
Journal of Refractive Surgery, 2009Douglas D, Koch +2 more
openaire +3 more sources
1998
Abstract Since the invention of the telescope in the early sevententh century, the need for lenses and mirrors of high accuracy and stability has been a major challenge to scientists and engineers. While the size of telescope optics has steadily increased, the surface accuracy that must be achieved remains constant at a small fraction of
openaire +1 more source
Abstract Since the invention of the telescope in the early sevententh century, the need for lenses and mirrors of high accuracy and stability has been a major challenge to scientists and engineers. While the size of telescope optics has steadily increased, the surface accuracy that must be achieved remains constant at a small fraction of
openaire +1 more source