CN217879866U

CN217879866U - Multifocal lens with annular azimuth microstructure

Info

Publication number: CN217879866U
Application number: CN202221536701.3U
Authority: CN
Inventors: 朱剑武
Original assignee: Danyang Juxiang Vision Technology Co ltd
Current assignee: Danyang Juxiang Vision Technology Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-11-22
Anticipated expiration: 2032-06-20

Abstract

The utility model discloses a multifocal lens with an annular orientation microstructure, which comprises a retina imaging area and an annular orientation microstructure area, wherein the retina imaging area provides diopter which can form clear images on human retina; the annular direction microstructure area consists of a plurality of annular areas, a plurality of hemispherical microstructures are distributed in each annular area, and the azimuth angles of the hemispherical microstructures in adjacent rings are different; the annular orientation microstructure area provides diopter for imaging in a limited distance in front of the retina of the human eye; the diopter of the annular position microstructure area is different from that of the retina imaging area; the diameter of the hemispherical microstructure in the annular area is less than or equal to the width of the annular belt; the annular azimuth microstructure areas at different positions are different in imaging positions in front of the retina. The utility model discloses form tensile formation of image space in retina the place ahead, can delay the deepening of people's eye myopia number of degrees.

Description

Multifocal lens with annular azimuth microstructure

Technical Field

The utility model relates to a multifocal out of focus lens technical field especially relates to a multifocal lens with cyclic annular position microstructure.

Background

When a teenager is nearsighted, the myopic glasses are often worn to correct the diopter deviation. However, when the eyes are used excessively for a long time and at a short distance, the myopic degree deepening and the diopter non-development can still not be avoided. In order to suppress the development of diopter error, functional lenses for suppressing the development of diopter error of near vision and far vision of human eyes are available on the market, and such lenses are provided with a plurality of focal length regions on a conventional lens for providing diopter different from that of a main lens for suppressing the development of diopter error.

A Haoya lens, thailand, inc. discloses a patent named "spectacle lens" which uses a microlens array to form a peripheral 360 ° zone to correct hyperopic defocus at the periphery of the retina of a myopic eye, and has patent number 2013106281748, which is named as a new Leo spectacle lens.

The Acer ophthalmic Hospital group, inc. discloses an ophthalmic lens, which corrects myopic defocus around the retina of a hyperopic eye by using a micro-lens, and has a patent number of 201821588173X.

Wenzhou medical university discloses a patent entitled "flexible refractive film patch with microstructure" which utilizes a flexible refractive film patch with microlenses adhered to a frame lens to correct hyperopic defocus around the retina of a myopic eye with patent application number 201910030136X.

However, in all the patent documents at present, the design of the lens is integrated, and the problem of contradiction between large defocus amount and wearing comfort is difficult to solve.

SUMMERY OF THE UTILITY MODEL

The invention aims to: the utility model aims at providing a multifocal lens with ring-shaped orientation microstructure which can inhibit diopter from developing irregularly.

The technical scheme is as follows: a multifocal lens having an annular orientation microstructure comprising a retinal imaging zone and an annular orientation microstructure zone, the retinal imaging zone providing a diopter capable of forming a sharp image on a human retina; the annular direction microstructure area consists of a plurality of annular areas, a plurality of hemispherical microstructures are distributed in each annular area, and the azimuth angles of the hemispherical microstructures in adjacent rings are different; the annular orientation microstructure area provides diopter for imaging in a limited distance in front of retina of human eyes; the diopter of the annular direction microstructure area is different from the diopter of the retina imaging area; the diameter of the hemispherical microstructure in the annular area is less than or equal to the width of the annular belt; the annular azimuth microstructure areas at different positions are different in imaging positions in front of the retina.

The difference between the diopter of the annular orientation microstructure area and the diopter of the retina imaging area is 1.5-3.5D.

The number of the ring-shaped orientation microstructure area is 10-14.

The retina imaging area consists of a central area and a marginal area, the central area is within an 8mm circle from the center of the lens to the outside, and the marginal area is an area from the annular azimuth microstructure area to the outside.

The hemispherical microstructures are uniformly distributed at the same ring position, the azimuth angles are fixed, the azimuth angles of the hemispherical microstructures in adjacent rings are different, and the deviation of the azimuth angles is within 2 degrees (the azimuth angle is the included angle between the center of the microstructure closest to the center line of the horizontal lens and the center of the horizontal lens).

The annular direction microstructure area is internally distributed with a plurality of hemispherical microstructures, the diameter of each hemispherical microstructure is 0.7-1 mm, the height of each hemispherical microstructure is 0-1 mm, the number of the hemispherical microstructures distributed in each ring is 12-180, the number of the hemispherical microstructures is increased from inside to outside, and the hemispherical microstructures are in the same ring and have the same azimuth angle.

The annular azimuth microstructure area realizes imaging at different positions in front of the retina by adjusting the hemispherical microstructure and the azimuth angle in the ring, and the distance from the annular azimuth microstructure area to the retina is increased in the process of the area from inside to outside, namely the myopic defocusing amount is increased.

Drawings

FIG. 1 is a schematic view of a multifocal lens with annular orientation microstructure

FIG. 2 azimuthal differential diagram of adjacent rings

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The utility model discloses a multifocal lens with annular azimuth microstructure, which is divided into a retina imaging area 1 and an annular microstructure area 2. The retina imaging area 1 is composed of a central area and an edge area, the central area is within an 8mm circle outwards from the center of the lens, and the edge area is an outwards area of the annular orientation microstructure area 2 and provides diopter capable of forming a clear image on the retina of a human eye. The annular microstructure area 2 comprises 10-14 concentric rings, 12-180 hemispherical microstructures 201 with the diameter of 0.7-1 mm (less than or equal to the width of the ring belt) and the height of 0-1 mm are distributed in each ring, the hemispherical microstructures 201 in the same ring are uniformly distributed, the azimuth angle 3 is fixed, the deviation of the azimuth angle 3 of the hemispherical microstructures 201 in adjacent rings is within 2 degrees, the annular azimuth microstructure area 2 provides diopter for imaging at a limited distance in front of the retina of a human eye, the difference between the diopter and the diopter of the retina imaging area 1 is 1.5-3.5D, imaging at different positions in front of the retina is realized by adjusting the hemispherical microstructures 201 and the azimuth angle 3 in the rings, and the myopic defocusing amount is increased in the process of the annular azimuth microstructure area 2 from inside to outside.

Example 1

The central area is within a circle of 8mm outwards from the center of the lens, the annular microstructure area 2 comprises 12 concentric rings, 15 hemispherical microstructures 201 with the diameter of 1mm and the height of 0.5mm are distributed on the innermost ring, the azimuth deviation of the hemispherical microstructures 201 in the adjacent rings is 1 degree, and the diopter difference between the annular azimuth microstructure area 2 and the retinal imaging area 1 is 2D.

Example 2

The central area ranges from the center of the lens to the outside in a circle of 8mm, the annular microstructure area 2 comprises 17 concentric rings, 30 hemispherical microstructures 201 with the diameter of 0.7mm and the height of 0.3mm are distributed in the innermost ring, the azimuth angle deviation of the hemispherical microstructures 201 in the adjacent rings is 0.5 degrees, and the diopter difference between the annular azimuth microstructure area 2 and the retinal imaging area 1 is 3D.

Claims

1. A multifocal lens having an annular orientation microstructure comprising a retinal imaging zone and an annular orientation microstructure zone, the retinal imaging zone providing a diopter capable of forming a sharp image on a human retina; the annular direction microstructure area consists of a plurality of annular areas, a plurality of hemispherical microstructures are distributed in each annular area, and the azimuth angles of the hemispherical microstructures in adjacent rings are different; the annular orientation microstructure area provides diopter for imaging in a limited distance in front of the retina of the human eye; the diopter of the annular direction microstructure area is different from the diopter of the retina imaging area; the diameter of the hemispherical microstructure in the annular area is less than or equal to the width of the annular belt; the annular azimuth microstructure areas at different positions are different in the imaging position in front of the retina.

2. The multifocal lens with annular orientation microstructure of claim 1, wherein the annular orientation microstructure zone has a diopter that differs from a diopter of the retinal imaging zone by 1.5 to 3.5 diopters.

3. The multifocal lens with annular orientation microstructure according to claim 1, wherein the annular orientation microstructure has a number of rings ranging from 8 to 14.

4. A multifocal lens with annular orientation microstructure according to claim 1 wherein said retinal image zone is comprised of a central zone and peripheral zones, the central zone being in a circle 8mm outward from the lens center and the peripheral zones being zones outward of the annular orientation microstructure zone.

5. The multifocal lens with annular azimuthal microstructures according to claim 1, wherein the hemispherical microstructures are uniformly distributed in the same annular position and have fixed azimuthal angles, and the hemispherical microstructures in adjacent rings have different azimuthal angles within 2 ° of azimuthal angle deviation.

6. The multifocal lens according to claim 3, wherein the annular directional microstructures are distributed in the annular region of the annular directional microstructure area, the diameter of the hemispherical microstructures is 0.7mm to 1.5mm, the height of the hemispherical microstructures is 0 mm to 1mm, the number of the hemispherical microstructures distributed in each ring is 12 to 180, the number of the hemispherical microstructures increases from inside to outside, and the hemispherical microstructures are in the same ring and have the same azimuth angle.

7. The multifocal lens with annular azimuthal microstructure according to claim 1, wherein the annular azimuthal microstructure region is imaged at different positions in front of the retina by adjusting hemispherical microstructure and azimuth angle in the ring, and the distance from the retina increases during the inward-outward area of the annular azimuthal microstructure region, i.e. the amount of myopic defocus increases.