Multi-element lens of controlling defocus and eye diopter and application thereof

摘要

A multi-element lens for controlling defocus and eye diopter for prevention and treatment of myopia and hyperopia. The multi-element lens includes one large unit convex lens for generating large defocus. One small unit concave lens for generating small defocus or focus through combination is combined on the lens of the large unit convex lens, or one small single lens is separately provided on the large unit convex lens. When an eye watches different distances through the lens, the central view region is in a small nearsightedness defocus or focus state, or a small farsightedness defocus or focus state, whereas the equatorial view region is always in a nearsightedness or farsightedness defocus state. Through the special influences of light on the view regions of human eyes, the growth of the ocular axis can be effectively controlled, which achieves the characteristics of good and fast prevention and treatment of myopia and hyperopia.

主权项

1. A multi-element lens of controlling defocus and eye diopter, comprising a large unit convex lens capable of generating large defocus, a small unit concave lens generating small defocus or focus through combination is combined on the large unit convex lens, or a small single lens generating small defocus or focus is separately provided on the large unit convex lens;
a diopter of the large unit convex lens conforms to the following formula M: ΦL=1/U+BL, wherein, the unit of ΦL is D; U is the distance from the lens to the object, U≧0.15, and its unit is m; BL is large defocus degree, its unit is D and 0 wherein the large unit convex lens capable of generating large defocus covers or corresponds to an equatorial view region.