An automatic retinoscopy optical system

Abstract

The invention provides an automatic skiascopy optometry optics system. The system includes an illumination light resource, a reticle, a surface plate, a second reflector, a projection objective lens,a reflector with holes, a receiving objective lens, a receiving image sensor, a spectroscope, a positioning objective lens, a first reflector and a positioning image sensor encapsulated in a shell, the shell is provided with a protection window, and position illumination lights are arranged around the protection window. The moving process of a retinoscope can be accurately simulated through the swing of the surface plate, the process of the swing of the retinoscope in the artificial skiascopy becomes simple, quick and accurate, the distance of skiascopy optometry can be quickly and accuratelycalculated according to the diameter of an illumination circular ring, the optometry error caused by the optometrist own refractive error during artificial sciascopy is eliminated, and the accuracy ofthe skiascopy optometry is improved.

Description

technical field [0001] The invention relates to the technical field of optometry imaging measurement, in particular to an optical system for measuring the refractive state of an eye to be examined by using a digital retinoscopy optometry method. [0002] technical background [0003] The human eye can be regarded as a convex lens, that is, the light emitted by a luminous body in front of the eye will converge on the retina after being imaged by the human eye. According to the principle of reversibility of the optical path, the light emitted by a point on the retina will converge at a certain position in front of the eye after being imaged by the human eye. Retinoscopy optometry is an optometry method that uses the brightness and movement of the image formed by the light reflected by the retina to judge the refractive state. The basic principle is to find the far point position of the eye to be inspected and correct the far point to the retinoscopy mirror. At the peephole, th...

AI Technical Summary

Problems solved by technology

It is not easy for beginners to master the retinoscopy method, which requires repeated training to master the true meaning of retinoscopy. However, during retinoscopy, no one else can observe the process of retinoscopy except the optometrist himself, which is not conducive to teaching and is very difficult to learn

In addition, the refractive error of the optometrist's own eyes will also bring errors to the results of retinoscopy

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