A method for producing a laser guide star wavefront sensor for adaptive optics with reduced focal anisoplanatism is presented. A theoretical analysis and numerical simulations have been carried out and the results are presented. The technique, named Sky-Projected Laser Array S...
adaptive optics (AO); Shack–Hartmann wavefront sensor (SHWFS); wavefront sensing; field-programmable gate array (FPGA) 1. Introduction The Shack–Hartmann wavefront sensor (SHWFS) is one of the most widely used wavefront sensors (WFSs) in adaptive optics (AO) systems [1]. The micro ...
The Shack–Hartmann wavefront sensor (SHWFS) is widely utilized for ocular aberration measurement. However, large ocular aberrations caused by individual differences can easily make the spot move out of the range of the corresponding sub-aperture in SHWFS, rendering the traditional centroiding method...
The light field distribution of the sub-image of the Hartmann wavefront sensor is equal to the convolution of the ideal geometric optical image and the system point spread function, and the microlens array of the Hartmann wavefront sensor divides the incident distorted wavefront so that the sub...
The light field distribution of the sub-image of the Hartmann wavefront sensor is equal to the convolution of the ideal geometric optical image and the system point spread function, and the microlens array of the Hartmann wavefront sensor divides the incident distorted wavefront so that the sub...
After completing the training, the neural network can output the corrected flow field distribution results based on the wavefront distortion information and distorted PIV images measured by the Hartmann–Shack wavefront sensor. Based on different requirements and theoretical models, we propose multi-...
After completing the training, the neural network can output the corrected flow field distribution results based on the wavefront distortion information and distorted PIV images measured by the Hartmann–Shack wavefront sensor. Based on different requirements and theoretical models, we propose multi-...