Wavefront-free detector self-adapting optical system based on random paralleling gradient descent algorithm

Abstract

The invention relates to an adaptive optics system without wavefront detector based on the random paralleling gradient descent algorithm, comprising an imaging sensor, a wavefront corrector and a driving circuit thereof and a random paralleling gradient descent algorithm. The imaging sensor detects the blur image spot or image generated by the distortion wavefront at real time and the control pressure corresponding with the wavefront corrector for making the image spot or image clear is obtained by the random paralleling gradient descent algorithm and applied on the wavefront corrector by the driving circuit, therefore the wavefront corrector generates compensation dosage for removing the wavefront distortion, thus the above operation is repeatedly performed to correct the wavefront error, so as to obtain idea imaging effect. The adaptive optics system based on the random paralleling gradient descent algorithm does need the wavefront detector and influence function of the wavefront corrector, with features of simple structure, compactness, light weight and high efficiency for light energy utilization.

Description

technical field [0001] The invention belongs to the field of optical technology, and relates to a novel adaptive optical system without a wavefront sensor, in particular to an adaptive optical system without a wavefront detector based on a random parallel gradient descent algorithm. Background technique [0002] Adaptive optics is a new optical technology developed in the world over the past 20 years. It uses the combination of electronic technology and optical technology to correct the dynamic optical wavefront error in real time through real-time measurement-control-correction, so that the optical system has the ability to automatically adapt to changes in external conditions and maintain the best working condition. Adaptive optics technology is a powerful means to improve the resolution capability of the imaging system and the beam quality of the laser system. It solves the dynamic interference problem that has plagued the optical industry for hundreds of years. There ar...

AI Technical Summary

Problems solved by technology

But the Hartmann sensor has an Achilles' heel, that is, the sub-aperture segmentation results in low utilization of light energy

In addition, in the adaptive optics system for imaging purpose, the wavefront sensor and imaging system are two independent parts, and the system structure is complex.

These factors will limit the application of Shaker-Hartmann equal sub-aperture split wavefront sensors in adaptive optics systems under weak beacon conditions

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