A liquid crystal-deformable mirror hybrid adaptive system matched with a 2-meter telescope
An adaptive system, deformable mirror technology, applied in the field of adaptive optics
Active Publication Date: 2018-09-21
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Aiming at the defects of near-infrared to mid-infrared wide-band wavefront self-adaptive correction imaging of a 2-meter large-caliber telescope, the present invention provides a dual-corrector adaptive optics that matches a 2-meter-caliber telescope and mixes a liquid crystal corrector and a deformable mirror System, the purpose is to realize 700nm ~ 2500nm broadband adaptive correction imaging
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] A liquid crystal-deformable mirror hybrid adaptive optics system supporting a 2m aperture telescope was built.
[0027] The key parameters of the device used are:
[0028] The first lens 1 is a triplet achromatic lens with a diameter of 30mm and a focal length of 200mm; the other lenses are all doublet 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 and a focal length of The aperture of the fourth lens 10 is 10mm and the focal length is -43.2mm; the aperture of the fifth lens 12 is 25.4mm and the focal length is 100mm; the aperture of the sixth lens 13 is 20mm and the focal length is 200mm; the aperture of the seventh lens 16 is 15mm and the focal length The aperture of the eighth lens 18 is 25.4mm and the focal length is 300mm; the aperture of the ninth lens 21 is 25.4mm and the focal length is 300mm; the aperture of the tenth lens 24 is 20mm and the focal length is 270mm;
[0029] Fa...
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
Login to View More Abstract
The invention is a dual corrector adaptive optical system which is matched with a liquid crystal corrector and a deformable mirror matched with a 2-meter-caliber telescope, and aims to realize adaptive correction imaging in a wide-spectrum range of 700nm to 2500nm. The adaptive optics system uses a 20×20 unit Hartmann wavefront detector, a 97 effective unit deformable mirror that can work in the short-wave infrared to mid-far infrared band, and a 256×256 pixel liquid crystal corrector that can work in the near-infrared band. . Low- and high-order two-level correction is adopted, in which the deformable mirror corrects the first 42 Zernike low-order modes, and then the first-level corrected beam is divided into two beams, and the long-wavelength band longer than 950nm can meet the high-resolution imaging requirements; and For the 700nm ~ 950nm band, the liquid crystal corrector is used to do 43 ~ 102 Zernike mode secondary corrections, so as to achieve twice the optical diffraction limit imaging resolution of the 2-meter telescope in the full band.
Description
technical field [0001] The invention belongs to the field of adaptive optics, and is a liquid crystal-deformable mirror hybrid adaptive optics imaging system matched with a 2-meter large-diameter telescope. The combination of liquid crystal correctors, deformable mirrors, fast galvanometers, wavefront detectors, adaptive optics controllers, color separation plates and other optical elements can realize near-infrared to mid-infrared broadband wavefront 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 advanta...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/06G02B27/00G02B17/08
CPCG02B17/0848G02B26/06G02B27/0012
Inventor 宣丽曹召良穆全全李大禹张佩光王少鑫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