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

A technology of adaptive optics and beam scanning, which is applied in the parts, televisions, and applications of TV systems, and can solve the problems of insufficient resolution to observe retinal microstructure, inability to observe lesions with a large field of view, and small imaging field of view. , to achieve the effect of good feature consistency, easy processing and operation, and simple system structure

Active Publication Date: 2021-06-18
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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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

Method used

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

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Embodiment Construction

[0067] The present invention will be further described in detail below in conjunction with the embodiments, so that those skilled in the art can implement it with reference to the description.

[0068] It should be understood that terms such as "having", "comprising" and "including" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0069] like Figure 1-2 As shown, a large field of view adaptive optics retinal imaging system with a common optical path beam scanning in this embodiment includes: a light source module 1, an adaptive optics module 2, a beam scanning module 3, a defocus compensation module 4, and an optotype module 6. Pupil monitoring module 7, detection module 8, control module 9 and output module 10;

[0070] The light source module 1 emits a parallel light beam, which sequentially passes through the adaptive optics module 2, beam scanning module 3, and defocus compensation module 4 to irradiate the huma...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/12A61B3/14
CPCA61B3/12A61B3/14A61B3/1025A61B3/1015A61B3/113A61B3/1225A61B3/1241A61B3/0025A61B3/0008A61B3/152H04N23/58
Inventor 史国华何益高峰孔文邢利娜李婉越张欣王晶
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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