Design method for novel multi-optical axis progressive multi-focal lens

Abstract

The invention relates to a design method for a novel multi-optical axis progressive multi-focal lens. Compared with traditional progressive multi-focal lenses, progressive lenses are designed in consideration of multiple optical axes; a plurality of progressive spherical or non-spherical small pupils are arranged on a lens; a focal power is correspondingly designed for the optical axis of each incoming lens corresponding to one spherical or non-spherical small pupil; and the front surface or the back surface of the whole progressive lens corresponding to the plurality of the spherical or non-spherical small pupils is integrally fitted. The mean-square deviation of the surface shape in each spherical or non-spherical small pupil relative to the spherical surface is greatly reduced, and in particular, blind areas in observable areas are greatly reduced relative to other progressive multi-focal lenses when eyes move side to side. Through the design method, actual use habits of human eyes are better combined and a visual function can be progressively and best corrected from a long distance, a middle distance and a near distance.

Description

technical field [0001] The invention relates to a design method of a progressive focus lens, in particular to a design method of a novel multi-optical axis progressive multi-focus lens. Background technique [0002] Gradient focus glasses are lenses whose focal power gradually increases from top to bottom. As the human eye observes from far to near, the focal power of the lens increases gradually. Therefore, only one lens can correct the vision of various fields of view, provide a continuous clear vision from far to near, without splicing traces in the lens, and has a beautiful appearance. [0003] Gradient focus lens is a rather complex optical element, and its research involves the knowledge of many disciplines such as optics, ergonomics and mathematics. Although the concept of gradient lenses has been developed for nearly a century, optical engineers and mathematicians around the world are still exploring to improve their performance. [0004] However, the current resea...

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Problems solved by technology

[0004] However, the current research and use of progressive multifocal lens design methods at home and abroad are limited to single optical axis systems, which is different from the actual situation that the human eye presents multi-optical axis systems when observing things in different directions.

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