A multi-curved composite progressive through-focus lens

CN224553609UActive Publication Date: 2026-07-24WENZHOU MINGHUI VISION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU MINGHUI VISION TECH CO LTD
Filing Date
2025-09-20
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional myopia correction lenses have problems such as poor adaptability, strong dizziness, single defocus signal and visual quality interference, especially in terms of children's visual experience and safety.

Method used

A multi-curved composite progressive defocusing lens is designed. The lens body is divided into a central vision zone, a multi-ring microlens zone, and a dynamic transition zone from the center to the edge. The defocusing power of the microlenses changes progressively. The optical surface is optimized by aspherical and freeform surface design to achieve a smooth defocusing transition.

Benefits of technology

It improves wearing comfort and myopia control, reduces dizziness and visual interference, and provides a clearer, less distracting peripheral visual experience, making it especially suitable for children's sports and activity safety.

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Abstract

The utility model belongs to the field of ophthalmic optics and optometry, and relates to a multi-curved surface composite progressive defocus lens, which comprises a lens body with a front surface and a back surface, the lens body is sequentially divided into a central visual acuity area, a multi-ring micro-lens area and a dynamic transition area from the center to the edge; the central visual acuity area is used for correcting central refractive errors and providing clear central visual acuity; the multi-ring micro-lens area surrounds the central visual acuity area and comprises at least three concentric rings, a plurality of micro-lenses are arranged in an array in each ring; the additional defocus power of the micro-lenses gradually and continuously increases or decreases from the innermost ring to the outermost ring; at least two different rings have different aspheric coefficients or surface designs; the dynamic transition area is located at the periphery of the multi-ring micro-lens area, the micro-lens density on the dynamic transition area gradually decreases radially outward until it smoothly connects with the lens base curve. It has very high wearing comfort and adaptability.
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