Zooming glasses and focus length adjusting method thereof

Abstract

The invention discloses zooming glasses and a focus length adjusting method thereof. The zooming glasses comprise a micro power supply, wherein the micro power supply is used for supplying power; a visual chart acquisition system is adopted to project on a flat wall to acquire a projection visual chart; the projection height of E corresponding to the international standard vision 1.0 on the visualchart in a projection distance corresponds to the height of E corresponding to the international standard vision 1.0 on an international visual chart in a testing distance of 5 meters after adjustment; and the focus length of a liquid crystal zooming lens can be adjusted by a user through a lens focus length adjusting system according to the projection visual chart, and thus the degree of the lens is matched with actual vision of the user. According to the zooming glasses, the projection visual chart is acquired through projection, zooming of the liquid crystal zooming lens is achieved through the lens focus length adjusting system, meanwhile the vision of the user with the zoomed lens is measured in real time, then the degree of the lens is matched with the actual vision of the user, andthe zooming glasses are short in regulation and control time, convenient to operate, accurate in zooming, small in size and good in lens light permeability.

Description

technical field [0001] The invention relates to the technical field of applied optics, in particular to zoom glasses and a focal length adjustment method thereof. Background technique [0002] What widely used glasses on the market adopted at present is the eyeglass of fixed focal length fixed degree. But for myopia or hyperopia, excessive use of the eyes causes the vision of the human eye to change over time, which requires people to constantly change glasses, which brings a lot of trouble to life and work. [0003] In order to protect the eyes, different types of glasses have adopted many new technical solutions, such as: the double-layer lens can be inflated or deflated through the air valve to change the focal length of the lens; the main lens frame and the movable lens frame are respectively equipped with lenses Zooming and so on through the combination of two lenses. The common point of the solutions is that the focal length of each lens is fixed during the use of th...

AI Technical Summary

Problems solved by technology

The common point of the solutions is that the focal length of each lens is fixed during the use of the glasses, or the zooming process is relatively complicated and procrastinated, and cannot be changed in time according to the changes in the eyesight, which is not conducive to the health of the eyes and the protection of eyesight.

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