Confocal scanning and imaging system and astigmation control method
An imaging system and confocal scanning technology, applied in the field of control, can solve the problem of inability to correct high-order and low-order aberrations at the same time, save work time and control equipment, improve correction bandwidth, and increase imaging quality.
Inactive Publication Date: 2013-02-06
SCHOOL OF OPHTHALMOLOGY & OPTOMETRY WENZHOU MEDICAL COLLEGE +1
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[0006] The technology of the present invention solves the problem: overcome the limitation that the traditional confocal scanning adaptive optics system cannot correct high-order and low-order aberrations at the same time, and propose a confocal scanning Imaging system and its aberration control method
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[0012] According to the manual attached figure 1 , how to specifically implement the confocal scanning imaging system proposed by the present invention and its aberration control method is described in detail as follows:
[0013] 1. The laser light source (1) of the light source component is connected to the optical fiber (2) through the optical fiber coupler, the laser is transmitted through the optical fiber (2), and the end of the optical fiber is placed at the focal point of the coupling lens (3), and the coupling lens (3) , the laser light exits in the form of parallel light, passes through the mirror (4), and enters the beam splitter (5). The beam splitter (5) of the present invention is generally a beam splitter with high transmittance and low reflectance, and the ratio of the projection rate to the reflectance rate is generally 92:8. The high transmittance is to ensure that the signal light energy returned from the human eye enters the photodetector part through the ...
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The invention discloses a confocal scanning and imaging system and an astigmation control method. The confocal scanning and imaging system comprises a double-deformable-lens correcting component and a self-adaptive optical wavefront detection component, wherein the self-adaptive optical wavefront detection component based on a slope direct control method eliminates coupling effect between the two deformable lenses by adding decoupling algorithm to optimize the slope direct control method and synchronously controls operation of the double-deformable-lens correcting component. By establishing a novel high-step deformable lens to respond to matrix and a novel deformable lens to respond to the matrix, coupling portion between the high-step deformable lens and a low-step deformable lens is removed, closed-loop correction of the deformable lenses can be correctly controlled, error affection of piston, tip and tilt is eliminated, and a correct slope vector calculating method for a double-deformable-lens self-adaptive optical system is obtained. The confocal scanning and imaging system overcomes the difficulty in co-operation of the two deformable lenses, is compact in design and high in imaging definition, imaging quality of a conventional confocal scanning and imaging system is greatly improved, and control bandwidth of the system is improved.
Description
technical field [0001] The invention relates to a control method, in particular to a confocal scanning imaging system and its aberration control method, which can simultaneously control two deformable mirrors to separate and correct small-stroke high-frequency aberrations and large-stroke low-frequency aberrations, and improve the system control bandwidth and image quality. Background technique [0002] Laser scanning microscopy was first applied to biological tissue imaging (Webb RH, Hughes GW. Scanning Laser Ophthalmoscope. Biomedical Engineering, IEEE Transactions on. 1981, BME-28(7):488-92.), and developed into a mature technology in 1987. Confocal scanning laser ophthalmoscope. Applied optics. 1987;26(8):1492-9). [0003] The invention patent with the patent number US4863226 (1989) proposed the concept of laser confocal scanning imaging. This patent realizes the horizontal scanning of the sample through the acousto-optic modulator, and realizes the vertical scanning of...
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IPC IPC(8): A61B3/12A61B3/14G02B26/06
CPCA61B3/12
Inventor 陈浩王勤美李超宏厉以宇
Owner SCHOOL OF OPHTHALMOLOGY & OPTOMETRY WENZHOU MEDICAL COLLEGE