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Multi-point out-of-focus spectacle lens patch and pasting method thereof

An spectacle lens and patch technology, applied in the field of myopia spectacle lenses, can solve the problems of complicated process, discomfort for children, and high manufacturing cost, and achieve the effects of alleviating the deepening of myopia, reducing costs, and preventing discomfort.

Pending Publication Date: 2021-08-24
SUZHOU MASON OPTICAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The published invention patent 201910710155.7 is to make the multi-point defocus design on the front surface of the lens. The manufacturing process is to process the multi-point defocus design surface on the surface of the metal mold through a single-point diamond lathe, and then pass through the hot pressing equipment , the design surface of the metal mold is hot-pressed on the surface of the glass mold, and then the glass mold is used to cast the resin lens. Change, the multi-point defocusing lens has been scrapped, replace it with a new multi-point defocusing lens
[0005] And for children, the focal power of the out-of-focus area of ​​3.0-3.5D often used in the existing technology will cause great discomfort to the children

Method used

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  • Multi-point out-of-focus spectacle lens patch and pasting method thereof
  • Multi-point out-of-focus spectacle lens patch and pasting method thereof
  • Multi-point out-of-focus spectacle lens patch and pasting method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0089] Embodiment 1: Taking a pair of spectacle lenses with spherical front and back surfaces as an example, set the central focal power of the spectacle lens Yd=-3.00D, and select the corresponding -2.50D according to the focal power range table in the meridian direction of the spectacle lens For the multi-point defocus spectacle patch, use the Nidec vertex meter to measure the optical center of the spectacle lens and make a mark, put a few drops of tap water on the front of the spectacle lens, and put the second side of the multi-point defocus patch Face the front of the spectacle lens and the geometric center of the patch is aligned with the optical center of the spectacle lens. After attaching the patch to the spectacle lens, squeeze out the water between the patch and the spectacle lens by hand. The visible area The focal power of the lens is zero degrees, and the focal power of the visual area is set to Td=0.00, and the vertex focal power (LD) of the Fresnel microlens in ...

Embodiment 2

[0097] Embodiment 2, taking a pair of spectacle lenses that have been trimmed and framed as an example, the visible area on the spectacle lens is circular, the spectacle lens on the spectacle frame is disassembled, and the spectacle lens is measured with a Niederk vertex meter. The optical center is well marked, drip tap water on the front of the spectacle lens, and align the geometric center of the patch with the optical center of the spectacle lens. After the patch is attached to the spectacle lens, squeeze out the water between the patch and the spectacle lens by hand. Then use scissors to cut off the excess patch outside the spectacle lens, then the spectacle lens has the function of side-center defocusing. This patch can not only be attached to the spectacle lens that has been cut, but also the eliminated spectacle lens with multi-point defocus patch can still be peeled off. Since the multi-point defocus patch is made of flexible plastic material, If there is no corrosion...

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Abstract

The invention provides a multi-point out-of-focus spectacle lens patch which comprises a patch body. The patch body comprises a first surface and a second surface, the first surface comprises a visual area, a multi-point out-of-focus area, a positioning plane and a geometric center, and the geometric center is located at the central position of the first surface; the geometric center is covered by the visual area, the multi-point out-of-focus area surrounds the outer side of the visible area, and the positioning plane surrounds the outer side of the multi-point out-of-focus area. The multi-point out-of-focus spectacle lens patch has the effect of inhibiting the axial growth of eyes so as to relieve myopia deepening.

Description

technical field [0001] The invention relates to the technical field of myopia glasses, in particular to a multi-point defocusing glasses patch and a sticking method thereof. Background technique [0002] In recent years, the incidence of myopia has increased greatly, especially children who develop myopia prematurely. According to the 2019 "National Vision Health Report", as of 2018, the overall myopia rate of children and adolescents in my country has reached 53.6%, especially in elementary school. From 15.7% in the first grade to 59.0% in the sixth grade, high myopia (more than 600 degrees) people in the third grade accounted for 21.9% of the total myopia. At present, research on myopia progression shows that the abnormal axial growth of the eyeball is one of the main factors that induce myopia progression, which manifests itself as the central object image appears in the fovea of ​​the retina and the peripheral image appears after the object image passes through the refrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/06G02C7/02
CPCG02C7/066G02C7/021G02C2202/24G02C7/086
Inventor 冯涛余浩墨余灏源
Owner SUZHOU MASON OPTICAL CO LTD