Anti-myopia apparatus for reading and writing

Abstract

This invention is about a read-write myopia prevention and cure instrument, which contains: support (1), once plane reflecting mirror (4), quadratic plane reflecting mirror (11) and eyesight (7). Its characteristic is: once plane reflecting mirror (4) directly reflect ray of eyeshot object, and its total length of optical path (Sú¢S1+S2+S3) is larger than 300mm, less than 5000mm; Lens or lenses group are installed at the eyeglass. This invention has broad eyeshot and strong suitability; using it, eyes will not fag easily, read-write is nature, work or study time can be prolong; it can prevent and cure myopia effectively, can enhance prevention and cure effect according to specific crowd or individual myopia degree and the viewing-object distance and angle of sight line can be melodied. It is convenient and flexible, it can correct sitting gesture and prevent cervical vertebra disease. It is especially suitable to long-term short-distance read-write people.

Description

technical field [0001] The invention belongs to the technical field of physical therapy trainers for eyes. Background technique [0002] The inventor once invented a kind of reading telescope, and the patent authorization announcement number is CN2451083Y, and it has a lens barrel with two reflection curves, and the upper port of the lens barrel is a peephole, and a magnifying glass is equipped with at the lower port of the lens barrel. The reading telescope uses the optical principle to lengthen the distance from the viewed object to the human eye, and the effect is better. However, due to the limitation of the long lens barrel, the reading telescope has a small field of view and is inconvenient to use. Produce visual fatigue, poor control effect. And the following is a magnifying glass, which requires a stricter distance from the magnifying glass to the visual object, which brings great restrictions and inconvenience to the user. At the same time, the difference in vision...

AI Technical Summary

Problems solved by technology

The reading telescope uses the optical principle to lengthen the distance from the viewed object to the human eye, and the effect is better. However, due to the limitation of the long lens barrel, the reading telescope has a small field of view and is inconvenient to use. Visual fatigue, poor prevention effect

And the following is a magnifying glass, which has strict requirements on the distance between the magnifying glass and the viewing object, which brings great restrictions and inconvenience to the user. At the same time, the difference in vision of the user is not considered when using it, so it cannot achieve a more ideal use and prevention effect.

Images