Fundus camera binocular stereo-imaging system based on eye model

Abstract

The invention discloses an optical structure of a fundus camera binocular stereo-imaging system based on an eye model. A universal Gullstrand-LeGrand eye model is introduced to simulate an actual eye, the system comprises two non-coaxial optical paths, the two optical paths perform light splitting through a semi-reflecting and semi-transmitting lens and are composed of ocular lenses close to the eyes and imaging objective lenses close to receiving devices, an imaging device is CCD, the system can obtain two clear fundus images at different viewing angles at the same moment, three-dimensional fundus image reconstruction is performed through algorithm processing, accordingly stereo fundus imaging is achieved, splicing processing can be also performed, and accordingly a fundus observation zone is increased. The fundus camera binocular stereo-imaging system based on the eye model achieves the usage requirements through structural optimization, initial parameter calculation and final image quality analysis and is simple in structure and convenient to operate.

Description

technical field [0001] This patent relates to a fundus camera imaging system, in particular to a fundus camera binocular stereoscopic imaging system based on a Gullstrand-Le Grand eye model, which belongs to the field of medical fundus imaging. Background technique [0002] 80% of the process that people obtain information from the outside world through sensory organs is completed through eyes. When the eyes receive external light stimulation, the light impulse is transmitted to the brain center to cause vision. Human visual acuity has a great impact on study, life and work. The structure of the human eye is delicate and complex, and the fundus is an important part of it. Most human eye diseases are caused by fundus lesions, except for a few caused by cornea and lens. Therefore, the fundus has always been the focus of clinicians. In the clinical examination, for eye diseases, first check the fundus to observe whether there are lesions, so as to correctly determine the cau...

AI Technical Summary

Problems solved by technology

At present, fundus cameras are all monocular systems, which cannot acquire a group of images at the same time. Therefore, it is necessary to design a fundus camera imaging system that can realize binocular stereoscopic imaging.

Images