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Device and method for measuring transfer matrix of adaptive optics system based on Hadamard matrix multi-channel method

A technology of adaptive optics and transfer matrix, applied in measuring devices, optical radiation measurement, measuring optics, etc., can solve the problems of not reducing the time required for a single measurement of the transfer matrix, and the impact of noise, etc., to achieve easy selection, improve resistance Noise capability, reducing the effect of temperature changes

Active Publication Date: 2013-04-24
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, these methods do not reduce the time required for a single measurement of the transfer matrix, and are also greatly affected by noise

Method used

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  • Device and method for measuring transfer matrix of adaptive optics system based on Hadamard matrix multi-channel method
  • Device and method for measuring transfer matrix of adaptive optics system based on Hadamard matrix multi-channel method
  • Device and method for measuring transfer matrix of adaptive optics system based on Hadamard matrix multi-channel method

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0036] Such as figure 1 As shown, the adaptive optics system transfer matrix measurement device based on Hadamard matrix multi-channel method, the device includes: light source 1, spatial filter 2, collimator lens 3, deformable mirror 4, mirror 5, Hartmann wavefront detection device 6, wavefront recorder 7a, data processing unit 7b, channel divider 7c and high-voltage amplifier 8; wherein,

[0037] The light source 1, the spatial filter 2 and the collimating lens 3 generate plane waves matching the calibers of the deformable mirror 4 and the Hartmann wavefront detector 6;

[0038] The channel divider 7c determines the effective area of ​​influence according to the surface shape influence function model of the deformable ...

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Abstract

The invention provides a device and a method for measuring a transfer matrix of an adaptive optics system based on a Hadamard matrix multi-channel method. The device comprises an adaptive optics system, a channel divider, a wavefront recorder and a data processing unit, wherein the channel divider divides channels for a driver of a wavefront corrector of the adaptive optics system; the data processing unit applies voltage to the divided channels according to a Hadamard matrix, so that planar waves generate wavefront change after passing through the adaptive optics system; the wavefront recorder calculates and stores a wavefront slope curve; and the data processing unit performs matrix operation on a wavefront slope curve matrix so as to calculate the transfer matrix. The device for measuring the transfer matrix of the adaptive optics system based on the Hadamard matrix multi-channel method has high measuring precision and high speed; and an effective novel method is supplied to measurement of the transfer matrixes of a large adaptive optics system.

Description

technical field [0001] The invention relates to the technical field of adaptive optics systems, in particular to an adaptive optics system transfer matrix measuring device based on a Hadamard matrix multi-channel method, which is suitable for large-scale adaptive optics systems with a large number of drive units. Background technique [0002] The Adaptive Optics (AO) system can correct the wavefront distortion caused by factors such as atmospheric turbulence in real time, improve the resolution of the imaging system and the focusing ability of the directed energy system, so it is widely used in astronomical observation, laser transmission and human eye imaging. field has a wide range of applications. The AO system usually consists of wavefront detection, wavefront restoration, and wavefront correction. Currently, the commonly used wavefront detector is Hartmann-Shack Wavefront Sensor (HSWFS), and the wavefront corrector is Deformable Mirror (DM). The transfer matrix is ​​t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J9/00G01M9/06
Inventor 郭友明饶长辉
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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