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CN-117584442-B - 3D printing equipment, glasses lens and preparation method thereof

CN117584442BCN 117584442 BCN117584442 BCN 117584442BCN-117584442-B

Abstract

The invention discloses 3D printing equipment, a spectacle lens and a preparation method thereof, wherein the spectacle lens comprises a basic lens fixing structure, a triaxial control structure, a curing agent extrusion structure, a lens sagittal height positioning structure and a curing structure; the base lens fixing structure is used for fixing the base lens, the triaxial control structure is connected with the curing agent extrusion structure and used for adjusting the position of the curing agent extrusion structure, the liquid curing material is arranged in the curing agent extrusion structure, the curing agent extrusion structure comprises a micro-injection pump, the micro-injection pump is used for extruding micro-liter-level liquid curing material drops on the surface of the base lens, the lens vector height positioning structure is connected with the micro-injection pump and used for adjusting the distance between the tip of the micro-injection pump and the surface of the base lens, and the curing structure is used for enabling the liquid curing material drops on the surface of the base lens to be micro-lenses. The proposal of the invention can provide the customized lens with the micro-lens for each patient, reduce the cost of manufacturing the lens and simultaneously reduce the economic burden for users.

Inventors

  • XIAO ZHEN
  • WANG CHENG

Assignees

  • 苏州高视高清医疗技术有限公司

Dates

Publication Date
20260505
Application Date
20231226

Claims (9)

  1. 1. The 3D printing equipment is characterized by comprising a basic lens fixing structure, a triaxial control structure, a curing agent extrusion structure, a lens sagittal height positioning structure and a curing structure; The base lens fixing structure is used for fixing the base lens; The triaxial control structure is connected with the curing agent extrusion structure and is used for adjusting the position of the curing agent extrusion structure; the curing agent extrusion structure is internally provided with a liquid curing material and comprises a micro-injection pump, wherein the micro-injection pump is used for extruding micro-liter-level liquid curing material drops on the surface of the base lens; The lens sagittal height positioning structure is connected with the microinjection pump and used for adjusting the distance between the needle point of the microinjection pump and the surface of the basic lens; The solidification structure is used for solidifying the liquid solidification material droplets of the base lens surface into microlenses.
  2. 2. The 3D printing apparatus of claim 1, wherein the microinjection pump comprises a first syringe and a second syringe, the first syringe having a volume less than the second syringe, an output of the first syringe for outputting droplets of liquid curable material on the order of microliters, and an output of the second syringe connected to a hollow barrel of the first syringe.
  3. 3. 3D printing apparatus according to claim 2, wherein the output end of the first syringe is provided with a first valve or first blocking means, which is closed when not extruded and which is opened when extruded; The output end of the second injector is provided with a second valve or a second blocking device, and the second valve or the second blocking device is opened when not extruded and closed when extruded.
  4. 4. The 3D printing apparatus of claim 2, wherein the first syringe and the second syringe form a T-shaped or Y-shaped structure.
  5. 5. The 3D printing apparatus of claim 1, wherein the triaxial control structure is a linear axis structure, delta type structure, or polar coordinate system structure; The linear shaft structure comprises three groups of linear guide rails, each group of guide rails corresponds to one coordinate axis of a rectangular coordinate system, and the linear guide rails can move along each shaft through a stepping motor and a screw rod transmission mechanism; the Delta type structure comprises three motors fixed at the top of the 3D printing device, and the control of the curing agent extrusion structure in a three-dimensional space is realized by controlling the length change of three arms connected to the curing agent extrusion structure; the polar coordinate system structure is achieved in combination with rotation of the base lens and a movement of the curing agent extrusion along a radial direction of the base lens and a height perpendicular to the base lens surface.
  6. 6. The 3D printing apparatus of claim 1, wherein the lens elevation positioning structure comprises a distance sensor for determining a distance of a tip of the microinjection pump from the base lens surface.
  7. 7. The 3D printing apparatus of claim 1, wherein the liquid curing material comprises a photosensitive resin or a heat sensitive resin.
  8. 8. The 3D printing apparatus of claim 7, wherein the liquid curing material comprises a photosensitive resin, the curing structure comprises an ultraviolet light source, or the liquid curing material comprises a heat sensitive resin, the curing structure comprises a heater.
  9. 9. A method for manufacturing an eyeglass lens, wherein the eyeglass lens is manufactured using the 3D printing apparatus of any one of claims 1 to 8, the method comprising: s1, providing a basic lens; s2, fixing the basic lens on a basic lens fixing structure; S3, adjusting the position of the curing agent extrusion structure by the triaxial control structure to enable the needle point of the microinjection pump to be in contact with the surface of the basic lens; S4, adjusting the needle point of the microinjection pump to be at a preset distance from the surface of the basic lens by using a lens sagittal height positioning structure; s5, extruding micro-liter liquid curing material droplets on the surface of the basic lens by the micro-injection pump; S6, repeatedly executing S3-S5, and forming a plurality of liquid curing material droplets on the base lens; s7, solidifying the liquid solidifying material liquid drops on the surface of the basic lens into micro lenses through a solidifying structure.

Description

3D printing equipment, glasses lens and preparation method thereof Technical Field The invention relates to the technical field of 3D printing, in particular to 3D printing equipment, an eyeglass lens and a preparation method thereof. Background Currently on the market, lens technology with micro-lenses for controlling myopia progression creates zones of increasing optical power in specific areas, creating myopia defocus, effectively controlling myopia progression. Studies have shown that applying near vision defocus in the range of 10 to 20 degrees around the retina is optimal. But the structural differences of eyes such as corneal curvature, corneal diopter, anterior chamber depth, etc. among individuals affect the precise location and effect of the microlenses. Current methods of producing such lenses rely primarily on casting or molding techniques. These production methods are not only costly, but also difficult to achieve personalized customization. The unified mold is difficult to meet the adaptation requirements due to individual differences, so that a microlens lens most suitable for the eye structure of each patient cannot be manufactured. This limits the maximization of the lens efficacy due to the inability to accurately adapt to the unique ocular structures of each patient, while also increasing the economic burden on the patient. In addition, the efficiency and cost effectiveness of the manufacturing process is also a problem to be solved by the existing methods. Disclosure of Invention The embodiment of the invention provides 3D printing equipment, an eyeglass lens and a preparation method thereof, wherein the 3D printing equipment can provide customized lenses with micro lenses for each patient, reduce the cost of manufacturing the lenses and simultaneously reduce the economic burden for users. According to an aspect of the present invention, there is provided a 3D printing apparatus comprising a base lens fixing structure, a triaxial control structure, a curing agent extrusion structure, a lens sagittal height positioning structure and a curing structure; The base lens fixing structure is used for fixing the base lens; The triaxial control structure is connected with the curing agent extrusion structure and is used for adjusting the position of the curing agent extrusion structure; the curing agent extrusion structure is internally provided with a liquid curing material and comprises a micro-injection pump, wherein the micro-injection pump is used for extruding micro-liter-level liquid curing material drops on the surface of the base lens; The lens sagittal height positioning structure is connected with the microinjection pump and used for adjusting the distance between the needle point of the microinjection pump and the surface of the basic lens; The solidification structure is used for solidifying the liquid solidification material droplets of the base lens surface into microlenses. Optionally, the microinjection pump comprises a first injector and a second injector, wherein the volume of the first injector is smaller than that of the second injector, the output end of the first injector is used for outputting micro-liter liquid curing material drops, and the output end of the second injector is connected with the hollow cylinder of the first injector. Optionally, the output end of the first injector is provided with a first valve or a first blocking device, and the first valve or the first blocking device is closed when not extruded and is opened when extruded; The output end of the second injector is provided with a second valve or a second blocking device, and the second valve or the second blocking device is opened when not extruded and closed when extruded. Optionally, the first syringe and the second syringe form a T-shaped or Y-shaped structure. Optionally, the triaxial control structure is a linear axis structure, a Delta type structure or a polar coordinate system structure; The linear shaft structure comprises three groups of linear guide rails, each group of guide rails corresponds to one coordinate axis of a rectangular coordinate system, and the linear guide rails can move along each shaft through a stepping motor and a screw rod transmission mechanism; the Delta type structure comprises three motors fixed at the top of the 3D printing device, and the control of the curing agent extrusion structure in a three-dimensional space is realized by controlling the length change of three arms connected to the curing agent extrusion structure; the polar coordinate system structure is achieved in combination with rotation of the base lens and a movement of the curing agent extrusion along a radial direction of the base lens and a height perpendicular to the base lens surface. Optionally, the lens sagittal height positioning structure includes a distance sensor for determining a distance of a tip of the microinjection pump from the base lens surface. Optionally, the liquid curing materia