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Laser scanning confocal ophthalmoscope device based on two wave-front correctors

A technology of wavefront corrector and laser scanning, which is applied in the field of laser scanning confocal ophthalmoscope system, can solve the problems of aberration correction accuracy and limited range, and achieve the effect of large correction range, good retinal image and accurate correction effect

Inactive Publication Date: 2013-01-09
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, since only one wavefront corrector is used in the adaptive optics system to correct the aberration of the human eye and provide the defocus required for confocal tomography, the accuracy and range of aberration correction are limited.

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  • Laser scanning confocal ophthalmoscope device based on two wave-front correctors
  • Laser scanning confocal ophthalmoscope device based on two wave-front correctors

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Embodiment Construction

[0022] specific implementation plan

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The laser scanning confocal ophthalmoscope device based on the dual wavefront corrector shown in Figure 1 mainly includes: light source collimation system, beam shrinkage and expansion system, wavefront detection and correction system, two-dimensional scanning galvanometer system, and data acquisition and processing system.

[0025] The light source collimation system includes a laser 1 , a collimating mirror 2 and a first beam splitter 3 . The laser 1 can be approximated as a point light source, and the emitted light reaches the first beam splitter 3 after being collimated by the collimating mirror 2;

[0026] Beam shrinking and expanding system, including the first spherical reflector 4 and the second spherical reflector 5, the third spherical reflector 7 and the fourth spherical reflector 8, t...

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Abstract

The invention provides a laser scanning confocal ophthalmoscope device based on two wave-front correctors. The laser scanning confocal ophthalmoscope device is a non-contact type retinal imaging system and mainly comprises a light source collimation system, a beam shrinking and expanding system, a wave-front detection and correction system, a photomultiplier tube, a two-dimensional scanning galvanometer, a synchronous circuit and a data collecting computer. In an optical system, a wave-front sensor detects eye aberration, two wave-front correctors correct the eye aberration obtained through detection while collecting real-time images of retinas. Compared with a laser scanning confocal ophthalmoscope device based on one wave-front corrector, the laser scanning confocal ophthalmoscope device based on two wave-front correctors is good in correction quality of wave-front aberration and large in correction range of the wave-front aberration.

Description

technical field [0001] The invention relates to a laser scanning confocal ophthalmoscope system based on a double wavefront corrector, relates to the technical field of adaptive wavefront detection and correction, and belongs to the technical field of human retina imaging medical equipment manufacturing. Background technique [0002] Human retinal images contain indispensable information for the diagnosis and treatment of ophthalmic diseases and some systemic diseases, such as age-related macular degeneration, glaucoma, and diabetes. In order for medical workers to discover and diagnose related diseases better, earlier and more accurately, it is very necessary to improve the quality of fundus images. The laser scanning confocal ophthalmoscope invented by R.H.Webb is a relatively commonly used fundus imaging device. However, the human eye, which is an important part of the ophthalmoscope optical system, is not a perfect optical system, which brings various aberrations to the...

Claims

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Application Information

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IPC IPC(8): A61B3/12A61B3/15
Inventor 张雨东何杰铃史国华何益王志斌
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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