Large field of view adaptive optics retinal imaging system and method for beam scanning in common optical path

Abstract

The invention discloses a system and method for large field of view adaptive optics retinal imaging with common optical path beam scanning. module, detection module, control module and output module. The system and method provided by the present invention can acquire fundus retinal large-field imaging images, small-field high-resolution imaging images of any region of interest, and large-field high-resolution imaging images, and the three types of imaging images are composed of a common optical path structure Therefore, the characteristics of the three types of imaging images are consistent and easy to process and operate. At the same time, the system has a simple structure, and the common optical path structure can acquire three types of retinal imaging images. A variety of imaging images are acquired through common optical beam scanning to meet the needs of different application scenarios and greatly improve the application range of retinal imaging.

Description

technical field [0001] The invention relates to the technical field of optical imaging, in particular to a large field of view adaptive optical retinal imaging system and method for common optical path beam scanning. Background technique [0002] The traditional confocal scanning technology developed into a mature laser confocal scanning imaging device in 1987 (Webb R, Hughes G, Delori F. Confocal scanning laser ophthalmoscope. Applied optics. 1987; 26(8): 1492-9), And it is widely used in retinal imaging, which can realize in vivo fundus retinal imaging with a large field of view. However, the eyeball is a complex optical system, and optical aberrations are unavoidable even in eyes without ametropia, especially in order to obtain high-resolution images under large numerical apertures. According to optical theory, diffraction can be obtained under large pupils. The ultimate higher resolution, but the large pupil brings more aberrations of the human eye, which greatly limits...

AI Technical Summary

Problems solved by technology

However, the device can only achieve high-resolution imaging with a maximum 3-degree field of view of the human eye

Limited by the halo area of ​​adaptive optics aberration correction, adaptive optics often compromises on the imaging field of view while achieving high-resolution imaging, and can only achieve small field of view imaging within 3°

[0004] In summary, the existing laser confocal scanning ophthalmoscope imaging field of view is large, but the resolution is not enough to observe the fine structure of the retina; the laser confocal scanning ophthalmoscope combined with adaptive optics can observe the fine structure of the retina, but the imaging visual field The field of view is small, and it is impossible to observe the lesions in a larger field of view

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