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

A gradient descent algorithm and adaptive optics technology, applied in the field of optics, can solve the problems of complex system structure and low utilization of light energy, and achieve the effect of simple algorithm, reduced volume and weight, and simplified structure

Inactive Publication Date: 2008-09-17
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF0 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 s

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wavefront-free detector self-adapting optical system based on random paralleling gradient descent algorithm
  • Wavefront-free detector self-adapting optical system based on random paralleling gradient descent algorithm
  • Wavefront-free detector self-adapting optical system based on random paralleling gradient descent algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] Such as figure 2As shown, an adaptive optics system based on a stochastic parallel gradient descent algorithm is composed of an imaging sensor 1, a wavefront corrector 2, a wavefront corrector driving circuit 3, a stochastic parallel gradient descent algorithm 4, and a computer 5, wherein the imaging sensor 1 is composed of Composed of imaging lens 6 and CCD7, computer 5 is responsible for the acquisition and processing of image spots or images, the realization of SPGD algorithm and the output of deformable mirror control signals.

[0037] When the adaptive optics system is working, first a frame image is collected by the CCD7 and sent to the computer 5, and the image spot or image evaluation function is calculated by the computer 5, and then the computer 5 is controlled by the SPGD algorithm to output a random disturbance signal, and the disturbance signal is corrected by the wavefront After being amplified by the driver drive circuit 3, it is applied to the wavefront...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02B26/06
Inventor 刘家国俞信胡新奇赵磊张晓芳李林
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap