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Liquid crystal-distorting lens' hybrid self-adaptive optical system designing method

A technology of adaptive optics and system design, applied in the field of adaptive optics

Active Publication Date: 2017-01-11
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0006] The invention provides a dual corrector adaptive optical system with a mixture of a liquid crystal corrector and a deformable mirror. Defects in Infrared-Mid-infrared Broadband Wavefront Adaptive Correction Imaging

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  • Liquid crystal-distorting lens' hybrid self-adaptive optical system designing method
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  • Liquid crystal-distorting lens' hybrid self-adaptive optical system designing method

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Embodiment Construction

[0025] In order to better illustrate the technology, the liquid crystal-deformable mirror hybrid adaptive optical system matched with the 2m aperture telescope is used as an example to implement and detect the effect of the present invention.

[0026] 1) The first lens 1 is a triple cemented achromatic lens with an aperture of 30mm and a focal length of 200mm; the rest of the lenses are double cemented achromatic lenses, the second lens 5 has a diameter of 30mm and a focal length of 547mm, and the third lens 9 has a diameter of 30mm , the focal length is 300 mm, the fourth lens 10 has a diameter of 10 mm and a focal length of -43.2 mm, the fifth lens 12 has a diameter of 25.4 mm and a focal length of 100 mm, the sixth lens 13 has a diameter of 20 mm and a focal length of 200 mm, and the seventh lens 16 has a diameter of 15 mm , the focal length is 150 mm, the eighth lens 18 has a diameter of 25.4 mm and a focal length of 300 mm, the ninth lens 21 has a diameter of 25.4 mm and a...

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Abstract

The invention is a double corrector self-adaptive optical system designing method for a liquid crystal corrector and a distorting lens with the object of solving the problem of a several-meter-long diameter telescope for wavefront self-adaptation and correction imaging of a near-infrared or middle infrared wide spectrum wave. The system adopts a wavefront detector, a distorting lens capable of working on a short infrared wave and a middle infrared wave, and a liquid crystal corrector capable of working on a near-infrared wave. The designing method comprises: performing closed loop control of the distorting lens; performing open loop control of the liquid crystal corrector; and utilizing the Zernike model to reconstruct a wavefront. The distorting lens corrects the first dozens of Zernike low order modes and then divides the first light beam after the first order of correction into two beams, one of which with the long wave band being greater than 950 nm has been able to achieve high resolution imaging requirement. And for the beam whose long wave band ranges between 700nm to 950 nm, the liquid crystal corrector performs secondary correction characterized by dozens of Zernike high order modes so that in all near-infrared and middle infrared waves, self-adaptive high resolution imaging can be achieved.

Description

technical field [0001] The invention belongs to the field of adaptive optics and relates to a design method of a liquid crystal-deformable mirror hybrid adaptive optics system. The system involves a combination of liquid crystal correctors, deformable mirrors, fast galvanometers, wavefront detectors, adaptive optics controllers, and color separation plates. It can realize near-infrared to mid-infrared wide-band wave Anterior adaptive correction imaging. Background technique [0002] The function of the optical wavefront adaptive correction system based on the large-aperture ground-based telescope is to compensate and correct the distorted wavefront of the incident light in real time to obtain ideal optical imaging. [0003] The wavefront corrector is the key component of the adaptive optics system. The traditional adaptive optics system has only one wavefront corrector, and the adaptive correction system using the deformable mirror has the advantages of fast response speed...

Claims

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Application Information

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IPC IPC(8): G02B26/06
CPCG02B26/06
Inventor 宣丽李大禹张佩光王少鑫曹召良穆全全杨程亮姚丽双刘永刚彭增辉徐焕宇张杏云王启东王玉坤孙飞
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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