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CN-224203529-U - Micro-structure defocusing lens capable of reducing phase mutation around micro-structure

CN224203529UCN 224203529 UCN224203529 UCN 224203529UCN-224203529-U

Abstract

The utility model discloses a microstructure defocusing lens capable of reducing phase mutation around a microstructure, which comprises a substrate and a functional area adsorbed on the substrate, wherein the functional area comprises a central area and a defocusing functional area, the defocusing functional area surrounds the central area, the defocusing functional area comprises a plurality of microstructures, a phase mutation reducing area surrounds each microstructure, the phase mutation reducing area covers the periphery of the microstructure and a local area of the microstructure, the phase mutation reducing area is arranged in the radial direction outwards by taking the center of the microstructure as an origin, the initial position is not less than 0.2 times of the diameter of the microstructure, the end position is not more than 3 times of the diameter of the microstructure, and the phase mutation reducing area is provided with structures for preventing light from directly transmitting. The micro-structure defocusing lens capable of reducing the phase mutation around the micro-structure can reduce the fundus high-power sphere and cylinder degree caused by the phase mutation around the micro-structure, increase the comfort of a wearer and improve the myopia management efficiency.

Inventors

  • Dou jiantai

Assignees

  • 江苏科技大学

Dates

Publication Date
20260505
Application Date
20250702

Claims (8)

  1. 1. The micro-structure defocusing lens capable of reducing phase mutation at the periphery of a micro-structure is characterized by comprising a substrate and a functional area adsorbed on the substrate, wherein the functional area comprises a central area and a defocusing functional area, the defocusing functional area surrounds the central area, the defocusing functional area comprises a plurality of micro-structures, a phase mutation reducing area surrounds each micro-structure, and the phase mutation reducing area covers the periphery of the micro-structure and a local area of the micro-structure.
  2. 2. The micro-structure defocusing lens capable of reducing phase mutation around a micro-structure according to claim 1, wherein the phase mutation reducing region is arranged in the radial direction with the center of the micro-structure as an origin, the initial position is not less than 0.2 times of the diameter of the micro-structure, and the final position is not more than 3 times of the diameter of the micro-structure.
  3. 3. The micro-structured defocus lens of claim 2, wherein the phase jump reducing region is provided with a structure for preventing light from directly transmitting, and the light transmission ratio is not more than 80%.
  4. 4. The micro-structured defocus lens of claim 1, wherein the micro-structures provide defocus signal stimulus to the fundus, and the phase mutation reducing region is configured to reduce the phase of the micro-structured peripheral mutation.
  5. 5. The micro-structure defocusing lens capable of reducing phase mutation around micro-structure according to claim 1 or 4, wherein the diameter of the micro-structure is not less than 0.5mm, the size of the micro-structure is not less than 1, the defocusing amount of different micro-structures is different, the micro-structure distribution in a single ring belt is not limited to 1, and a gap exists between adjacent micro-structures.
  6. 6. The micro-structured defocus lens of claim 5, wherein the additional defocus amount of the micro-structure is in the range-6 d.
  7. 7. The micro-structured defocus lens of claim 1, wherein the number of zones of the defocus functional region is not less than 6, and the diameter of the central region is not less than 5mm.
  8. 8. The micro-structure defocus lens of claim 1, wherein the base sheet is a refractive power required for vision correction, and the refractive power range of the vision correction of the base sheet is-10 d to 10d, and astigmatism is-5 d to 5d.

Description

Micro-structure defocusing lens capable of reducing phase mutation around micro-structure Technical Field The present utility model relates to a defocusing lens, and more particularly to a micro-structure defocusing lens capable of reducing phase mutation around a micro-structure. Background Ophthalmic lenses using microstructures (lens, cylinder, etc.) are currently mainstream defocus ophthalmic lenses, such as the "ophthalmic lens" patent (2013106281748) discloses an ophthalmic lens for correcting peripheral hyperopic defocus of retina, which consists of a first refractive zone at the central portion, which is a uniform smooth refractive surface, and a second refractive zone at the peripheral portion, which consists of a 360 ° annular refractive surface consisting of a plurality of island-shaped microlenses independent of each other. The micro-structure lens is manufactured by a mold, when the mold is manufactured, a micro-structure is needed to be carved on a base surface, the edge of the micro-structure and the edge of the base surface are difficult to smooth, and the difference exists between the micro-structure and the diopter of a substrate, the difference can cause phase mutation, and when light passes through the position, the phase change can be caused to be large, and a large amount of diopter change (including sphere diopter and cylinder diopter) can be caused. When the mold is used for manufacturing the lens, the phase mutation around the microstructure is superimposed on the lens, after the lens is hard-coated, the mutation of a part of geometric shapes can be smoothed, but due to the fact that the refractive indexes of hardening liquid, coating materials and the like are different from those of the lens, the phase mutation around the microstructure cannot be weakened, but can be increased, when light passes through the peripheral position of the microstructure of the lens, a large amount of optical path difference is added to cause the phase mutation, and high sphere and cylinder power is generated on the fundus, so that myopia management efficiency is affected, and how to reduce the phase mutation around the microstructure is a problem to be solved by the existing micro-structure defocused lens is solved. Disclosure of utility model The utility model aims to provide a micro-structure defocusing lens capable of reducing phase mutation around a micro-structure so as to solve the problem of phase mutation around the micro-structure and the problem of high sphere power and cylinder power of eyeground caused by the phase mutation, thereby providing a more effective myopia management lens. The utility model has the technical scheme that the micro-focus lens comprises a substrate and a functional area adsorbed on the substrate, wherein the functional area comprises a central area and a defocusing functional area, the defocusing functional area surrounds the central area, the defocusing functional area comprises a plurality of microstructures, a phase mutation reducing area surrounds each microstructure, and the phase mutation reducing area covers the periphery of the microstructure and a local area of the microstructure. The phase mutation reducing region is arranged outwards along the radial direction by taking the center of the microstructure as an origin, the initial position is not less than 0.2 times of the diameter of the microstructure, and the final position is not more than 3 times of the diameter of the microstructure. The phase mutation reducing area is distributed with a structure for preventing light from directly transmitting, and the light transmission ratio is not more than 80%. The microstructure provides defocusing signal stimulation for the fundus, and the phase mutation reducing region is used for reducing the phase of the peripheral mutation of the microstructure. The diameter of the microstructure is not less than 0.5mm, the size of the microstructure is not less than 1, the defocusing amount of different microstructures is different, the microstructure distribution in a single annular belt is not limited to 1, and gaps exist between adjacent microstructures. The additional defocus amount of the microstructure 301 ranges from-6 d to 6d. The number of annular bands of the defocusing functional area is not less than 6, and the diameter of the central area is not less than 5mm. The substrate is to provide the diopters needed to correct vision. Diopter range of the substrate correcting vision is-10D, astigmatism is-5D. The utility model has the beneficial effects that the problem of phase mutation around the microstructure and the problem of high sphere power and cylinder power of the fundus caused by the phase mutation can be solved, so that a more effective myopia management lens is provided, the high sphere power and the cylinder power are reduced, and the comfort of a wearer is improved. Drawings FIG. 1 is a schematic view of a lens structure of the present utility model; FIG.