Eye aberration analysis with Zernike polynomials

Nick-named laser radars

“…From the data on defocus, the conjugation telescope is realigned to compensate it. Instead of moving optical parts in the conjugation telescope, the liquid lenses are very efficient [38] providing the switch interval between the first series of laser pulses (no conjugation) and the second series (conjugated position) about 10 ms with the total time of both series about 500 ms. The coordinates of laser projections on the retina are measured by two orthogonal photodetector linear arrays.…”

Axicon-based optical system for laser microradar

“…Limited amount of information from limited number of probing points can be compensated at reconstruction of the wave front by interpolation [4] or by approximation [5]. We tried both ways, and the approximation with Zernike polynomials appeared to be preferrable for two reasons: (1) approximation works as a filter smoothing the noise-like raw data, and (2) polynomial description of a reconstructed surface better interprets the aberrations, including to-doctors-well-known defocus and astigmatism.…”