Suzhou Microclear Medical Instruments Co., Ltd.

University of Houston System

Chaohong Li

Lei Li

Xiaoping Hou

Heidi Hofer

Nripun Sredar

Hope Queener

Enyi Zhao

Jason Porter

Lukasz Sterkowicz

A confocal laser fundus angiographic device, comprises: an objective lens, a scanning lens, a scanning galvanometer, a mirror, a filtering module, an imaging detection assembly and an excitation light source. The illumination light emitted by the excitation light source enters the fundus passing through the scanning galvanometer, the scanning lens and the objective lens. Fluorescent substances in fundus vessels are excited by the illumination light and emit light with a specific wavelength. The light with a specific wavelength enters the imaging detection assembly by passing through the objective lens, the scanning lens, the scanning galvanometer, the mirror and the filtering module. The filtering module comprises a base, a motor mounted on the base, a rotary block mounted on the motor and at least one filter mounted on the rotary block. The base is provided with a light-through hole. Compared with the prior art, the confocal laser fundus angiographic device is capable of automatically switching the filter, thereby avoiding the problem of forgetting to switch the filter due to the operator's mistake or switching the filter by mistake.

Confocal laser fundus angiographic device

An ultra wide field fundus imaging system comprises a photosource, an optical splitter, a scanning assembly, a curved reflector, a probe pinhole and an imaging assembly. The scanning assembly includes a first scanning mirror scanning along a first direction and a second scanning mirror scanning along a second direction. The light emitted by the photosource passes through the optical splitter, then successively is reflected by the first scanning mirror, the curved reflector, the second scanning mirror and the curved reflector, and then enters in the fundus; the light entering the fundus is reflected by the retina and then successively is reflected by the curved reflector, the second scanning mirror, the curved reflector, the first scanning mirror and then returned to the optical splitter; the light is reflected by the optical splitter and passes through the probe pinhole, finally the light enters in the imaging assembly. Compared with the prior art, the ultra wide field fundus imaging system realizes fundus imaging by total reflection and can effectively avoid ghost images caused by lens module imaging to improve the imaging quality. Since the curvature of the curved reflector is gradually changed, so the light reflected by the curved reflector can enter in the fundus at a larger incident angle to achieve wide field imaging.

Ultra wide field fundus imaging system

Embodiments of the invention generally provide apparatuses and methods utilized in optics, and more specifically to apparatuses and methods for adaptive optics correction and imaging. Real-time wavefront sensorless adaptive optics correction and imaging is used with the living human eye to produce optical quality rivaling that of wavefront sensor based control in the similar systems. Using an optimization algorithm that is based on an image quality metric, the apparatus and method optimize the optical quality in ocular image frames acquired with an adaptive optics system.

Wavefront sensorless adaptive correction of the wave aberration for an eye

Growing community of inventors

Suzhou, China

Chaohong Li