Eye ground hyperspectral imaging device

Abstract

The invention relates to the technical field of optical images, in particular to an eye-ground hyperspectral imaging device. The eye-ground hyperspectral imaging device is used for overcoming the problems that in the prior art, spectral transformation in a broad-band continuous wavelength range cannot be achieved and the reliability is poor. The eye-ground hyperspectral imaging device includes a lighting unit, an imaging unit and a controlling unit. The lighting unit includes a light source, a first converging lens, an adjustable concave diffraction grating, a diaphragm, a second collecting lens, a medium altitude reflector and a retinal objective, wherein the first converging lens, the adjustable concave diffraction grating, the diaphragm, the second collecting lens, the medium altitude reflector and the retinal objective are sequentially arranged between the light source and the eye ground in the direction of light path transmission. The imaging unit includes an area-array detector and a controlling computer, a retinal objective, a hollow reflector and an imaging mirror, wherein the retinal objective, the hollow reflector and the imaging mirror are successively arranged between the eye ground and the area-array detector in the direction of the light path transmission; the controlling computer is connected to the area-array detector. The controlling unit includes a controller, a rotating shaft is arranged on the adjustable concave diffraction grating, and the controller is connected to the controlling computer, the light source and the rotating shaft of the adjustable concave diffraction grating separately.

Description

technical field [0001] The invention belongs to the technical field of optical imaging, and in particular relates to a fundus hyperspectral imaging device. Background technique [0002] Fundus imaging technology has become an important method of ophthalmic disease detection, and this technology has become standard practice for observing, interpreting, diagnosing, and documenting retinal health and disease. Retinal vascular abnormalities represent systemic microvascular disease to a certain extent, and are the pathological basis of target organ damage in metabolic syndrome. The retinal microcirculation system is very similar to the blood circulation system of the heart, brain, kidney and other organs in terms of structure and function, and can objectively reflect the development and changes of systemic diseases. Many people have developed corresponding fundus diseases before clinical symptoms appear. Abnormal manifestations also indicate that some fundus abnormalities can ap...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fundus hyperspectral imaging device to overcome the defects in the prior art that cannot realize spectral band conversion in a wide-band continuous wavelength range and have poor reliability

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