Aspheric window optical aberration correction method based on Zernike model coefficient optimization

A technology for model coefficient and aberration correction, applied in the field of aspherical window optical systems, to achieve the effect of simple and compact system structure, reducing the probability of target loss

Active Publication Date: 2021-02-12
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of correcting the dynamic aberration of the aspheric optical system. Aiming at the deficiencies of the current correction method, a method for correcting the aberration of the aspheric window optical system based on Zernike model coefficient optimization is proposed.

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  • Aspheric window optical aberration correction method based on Zernike model coefficient optimization
  • Aspheric window optical aberration correction method based on Zernike model coefficient optimization
  • Aspheric window optical aberration correction method based on Zernike model coefficient optimization

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[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] Such as figure 1 As shown, the present invention is based on the Zernike model coefficient optimized aberration correction method of the aspheric window optical system, wherein the aspheric window optical system includes: a rotationally symmetric aspheric window 1 coaxially arranged in sequence, an aspheric correction plate 2, Micromechanical deformable mirror 4 , spherical optical lens 1 5 , spherical optical lens 2 6 , main reflector 3 , spherical optical lens 3 7 and detector image surface 8 . The light first passes through the rotationally symmetrical aspheric window 1, the light is transmitted to the aspheric correction plate 2, and then enters the main reflector 3 for reflection, the optical axis rotates 180°, the reflected light reaches the micromechanical deformable mirror 4 and is reflected again, the optical axis rotates 180° °, the re...

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Abstract

The invention discloses an aspheric window optical system aberration correction method based on Zernike model coefficient optimization, belongs to the technical field of aspheric window optics, and aims to overcome the defects of an existing correction method. The method comprises the steps of 1 performing optimization in optical design software CodeV, and preliminarily correcting aberration; 2 constructing a conversion matrix of a Zernike polynomial coefficient and the deformable mirror driver voltage; 3 performing optimization by utilizing a genetic algorithm: writing the genetic algorithm,taking the Strill ratio of the optical system as a fitness function of the algorithm, and taking eight coefficients of a Zernike polynomial as variables of the algorithm; 4 converting the Zernike coefficient into the driver voltage: multiplying the matrix A obtained in the step 2 by the matrix C obtained in the step 3 to obtain a deformable mirror driver voltage matrix V; and 5 correcting aberration by using a deformable mirror: changing the voltage of a deformable mirror driver into the voltage V obtained in the step 4, and enabling the deformable mirror to generate a corresponding surface shape so as to compensate the aberration.

Description

technical field [0001] The invention belongs to the technical field of aspheric window optical systems, and relates to an aberration correction method for aspheric window optical systems based on Zernike model coefficient optimization, which is suitable for aberration correction of various aspheric window optical systems. Background technique [0002] Traditional aircraft window components are generally hemispherical, the rotation center of the imaging system coincides with the spherical center, the aberration generated during the scanning process is constant, and the difficulty of design and processing is low, and the technology is mature. However, the hemispherical window has a large air resistance coefficient, which is difficult to meet the needs of high-speed flight. Due to the higher and higher speed requirements of the aircraft, the traditional spherical and flat windows are usually replaced by aspherical windows that are more in line with aerodynamic performance, usua...

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Application Information

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IPC IPC(8): G02B27/00G02B26/00G02B26/06G06F30/20G06N3/12G06F17/16G06F111/04G06F111/06
CPCG02B27/0012G02B27/0031G02B27/0068G02B26/06G02B26/00G06F30/20G06N3/126G06F17/16G06F2111/04G06F2111/06
Inventor 王超梁殿明刘壮史浩东李英超付强
Owner CHANGCHUN UNIV OF SCI & TECH
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