Plane-revolution reversible glasses

Abstract

The invention relates to plane-revolution reversible glasses. The plane-revolution reversible glasses comprise a handle and a lens frame, the handle is internally provided with a transmission system and a control system, the lens frame is connected with the transmission system and arranged at the upper end of the handle, the lens frame and the axial surface of the handle are in parallel, the control system controls the transmission system to drive the lens frame to rotate in the plane, the lens frame is composed of four lens frame bodies which are provided with lenses, the centers of the fourlens frame bodies are located on the same circumference taking the center of the lens frame as the center, and plane revolution means circular motion of the four lenses around the center of the lens frame. By adopting the plane-revolution reversible glasses, to a certain degree, it is guaranteed that the distances between eyes and the lenses and the distances between sighting targets and the eyesare fixed, so that operation time for completing a lens reversal process is shortened, and the precision of testing and training is improved; furthermore, the plane-revolution reversible glasses are in combination with electronic recording of regulation periods, so that not only are errors brought by manual reversal and timekeeping reduced, but also the number of the regulation periods per unit time is counted more precisely, and the accuracy of sensitivity regulation testing is greatly improved.

Description

technical field [0001] The invention relates to an instrument for visual adjustment sensitivity inspection and training, in particular to a plane rotating flip mirror. Background technique [0002] With the increase in the frequency of use of video terminals, more and more myopia. During the critical period of development, many adolescents and children experience eye fatigue and abnormal adjustment function due to the long time of using their eyes at close range, which leads to myopia. In medicine, the adjustment function of the eye is mainly evaluated from two aspects: the adjustment range and the adjustment sensitivity, and the inspection of the adjustment sensitivity will use a flip mirror. The existing flip mirror is composed of four lenses connected in series by a central axis. One side of the central axis is two positive mirrors, and the other side is two negative mirrors. When in use, the rotation of the central axis drives the positive and negative lens groups to fl...

AI Technical Summary

Problems solved by technology

[0003] The flipping of the existing flip mirror has the following disadvantages: 1. It is inconvenient to operate the flip mirror by hand, and it is easy to cause the subject to fail to see the visual mark through the lens during the flipping process, which will also cause the distance between the eyes and the lens and the distance of the visual mark. The distance between the eyes is not fixed and the inspection cannot be standardized, and there is a delay in the operation time during the completion of the flipping process. These factors may cause technical inspection errors; Human errors are prone to human error when flipping times per unit time, and it is difficult to accurately record the user's adjustment time, resulting in inaccurate inspection results; and the existing timing and counting is only a statistics of the adjustment cycle per unit time, and it is impossible to clearly record positive adjustment or How long does negative adjustment take

3. When adjusting the sensitivity of the existing flip mirror training, the arm is prone to fatigue when the flip mirror is operated by hand, resulting in an uncertain distance between the eyes and the lens, and factors such as the misalignment between the optical center of the lens and the pupil center of the eye affect the training effect

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