An autonomous pointing naked-eye vision screening system

Abstract

The invention discloses an autonomous directional naked-eye vision screening system, comprising: a control module; two monocular directional transmission devices, which include a backlight module, a linear Fresnel lens, and two 60HZ liquid crystal display layers of a certain size ; directional transmission device; distance measuring device, used to measure the distance between the tester and the display image layer, and the control module controls the monocular directional transmission device to project the left eye image and the right eye image respectively; semi-reflective A half mirror, which is placed between the two monocular directional transmission devices and is 45° respectively, changes the transmission direction of the optical path; an interactive device; the control module detects the visual function of the tester according to the input signal and the test image . The present invention can realize vision screening at different depth distances such as 50cm, 1m, 3m, and 5m at the same time through the above device, and truly realize intelligent vision screening such as low consumption, high efficiency, small size, and high accuracy, and can be better applied to Medical equipment.

Description

technical field [0001] The invention belongs to the field of medical vision inspection equipment, and more specifically, relates to an autonomous pointing naked-eye vision screening system. Background technique [0002] With the rapid development of science and technology, more and more electronic products have entered our lives. When we enjoy the variety of these electronic products, we often ignore the fatigue of our eyes. In fact, most of the information obtained by humans comes from the human visual system. [0003] However, for contemporary society, the year-by-year increase in the incidence of myopia among students is a worldwide problem, and the highest incidence of myopia is in Asia. According to statistics: At present, there are about 300 million people with myopia in my country, accounting for about 1 / 3 of the world's myopia. In view of this data, juvenile myopia should cause the country to attach great importance to it. Therefore, the protection of eyes should ...

AI Technical Summary

Problems solved by technology

The traditional inspection method requires the assistance of doctors, which increases labor to a certain extent; second, the use of baffles increases consumables to a certain extent; third, during the test process, baffles can cheat through light leakage and oppress the eyeballs to a certain extent, causing test inaccuracy

[0005] In addition, the naked-eye 3D display with pointing backlight realizes its vision screening function to a certain extent and solves the above problems, but it needs a 120HZ liquid crystal display panel, and the color loss in the 3D display process is caused by liquid crystal drive problems when the temperature is low; in addition, E The word table display image is about 21cm, which can realize all displays. At present, it is difficult to find an LCD panel with 21cm and 120HZ refresh rate in the market, which reduces the screen ratio to a certain extent.

Third, it is limited to the backlight and the lens. In view of the crosstalk problem, it is difficult to realize the vision detection of physical positions such as 50cm, 1M, 3M, and 5M at the same time.

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