Myopia diopter measuring system

Abstract

The invention relates to a myopia diopter measuring system. The myopia diopter measuring system comprises a machine body, a head support, a control integration module and an optometry integration module; a central control module is arranged in the control integration module; an infrared light source, a fixed concave lens, a fixed convex lens, a movable convex lens, a projection image, a light source, a spectroscope, an imaging lens, an imaging diaphragm and an image sensor are arranged in the optometry integration module. The imaging image is transmitted to the central control module through the image sensor, the standard clear image is arranged in the central control module, the central control module compares the imaging image with the standard clear image, the definition value of the imaging image is judged, the moving speed of the sliding table is determined according to the definition value, and when the definition value is lower, the moving speed of the sliding table is faster, when the definition value is gradually increased, the moving speed of the sliding table is gradually reduced, it is guaranteed that a clear eye fundus image is obtained, meanwhile, the imaging speed of the clear image is increased, and time used for optometry is shortened.

Description

technical field [0001] The invention relates to the technical field of eye measurement, in particular to a system for measuring the diopter of myopia. Background technique [0002] The computer refractor adopts an objective measurement method, which projects an infrared image onto the fundus of the human eye, generates a scattering image on the retina of the human eye, and calculates the diopter of the eye objectively by analyzing the measurement image collected by the CCD. During the measurement of the traditional computer optometry, the operator gently controls the front, back, left, right, up and down movement of the instrument with his hand, captures the pupil of the subject's eye, aligns it with the pupil of the eyeball, and presses the measurement button to obtain the measurement result. will be displayed on the screen immediately. [0003] Traditional computer refractometers have extremely high requirements for operators. With the development of technology, fully aut...

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Problems solved by technology

[0004] Therefore, the present invention provides a measurement system of myopia diopter, which is used to overcome the problem in the prior art that the full-automatic computer refractometer acquires clear measurement images at a slow speed, which leads to long refraction time.

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