Portable stereo-imaging retina camera optical system

Abstract

A portable stereo-imaging retina camera optical system comprises an omentum objective lens, a field lens, a semi-reflecting and semi-transmitting lens, a front objective lens, imaging objective lenses, imaging chips and an illuminating device. The omentum objective lens, the field lens and the front objective lens are all perpendicular to the main optical axis, and the included angle between the semi-reflecting and semi-transmitting lens and the main optical axis is 30-60 degrees; a main light ray is divided into an optical sub-path A<1> and an optical sub-path A<2> which are symmetrically inclined on the rear surface of the field lens, and the included angle a between the inclined optical sub-path A<1> and the inclined optical sub-path A<2> is 11 degrees; each imaging objective lens and the corresponding imaging chip constitute an imaging set, the imaging objective lens and the imaging chip in the imaging set on the uppermost portion are sequentially arranged on the first sub opticalaxis A<1>, and the imaging objective lens and the imaging chip in the imaging set on the lowermost portion are sequentially arranged on the second sub optical axis A<2>; and the included angle betweenan output optical path of the illuminating device and the semi-reflecting and semi-transmitting lens is 45 degrees. According to the portable stereo-imaging retina camera optical system, the problemthat an existing monocular retina camera cannot obtain a set of images at the same moment is solved, and miniaturization and portability of the retina camera are achieved.

Description

technical field [0001] The invention belongs to the technical field of fundus micro-imaging and fundus three-dimensional reconstruction, and in particular relates to an optical system of a portable three-dimensional imaging fundus camera. Background technique [0002] 80% of the process that people obtain information from the outside world through sensory organs is completed through eyes. The structure of the human eye is delicate and complex, and the fundus is an important part of it. In the clinical examination, for eye diseases, first check the fundus to observe whether there are lesions, so as to correctly determine the cause. Fundus lesions are closely related to and interact with other systemic diseases throughout the body. Many diseases are manifested in the fundus. According to some characteristics of the fundus, it can assist other clinical disciplines to make a correct diagnosis. The early symptoms of other diseases appear in the eyes, and fundus examination ca...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a portable stereo imaging fundus camera optical system to solve the problem that the existing monocular fundus camera cannot acquire a group of images at the same time, and to realize the miniaturization and portability of the fundus camera

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