A unit microstructure lens for softening the intensity of off-focus spots on the fundus

Abstract

The utility model discloses a unit microstructure lens of softening eye fundus defocus light spot intensity, including diopter correction base piece and the functional area of being attached to its surface, and the functional area will base piece divide into: central region, multiple unit microstructure area and correct far -sighted defocus area, multiple unit microstructure area includes several unit microstructures, unit microstructure includes 1 high additional defocus amount's microstructure and at least 2 low additional defocus amount's microstructure, and each low additional defocus amount's microstructure is in close contact with high additional defocus amount's microstructure, and low additional defocus amount's microstructure does the passivation, and the low additional defocus amount microstructure after passivation can increase the light spot size of high additional defocus amount's microstructure in close contact with it in eye fundus, and balance its edge and central light intensity. The lens of the utility model can increase the light spot size of high additional defocus amount's microstructure in close contact with it in eye fundus, and balance its edge and central light intensity, can soften light intensity, provides more effective myopia management scheme.

Description

Technical Field

[0001] This utility model relates to a microstructure lens, and more particularly to a unit microstructure lens that softens the intensity of defocused light spots on the fundus. Background Technology

[0002] Microstructured lenses (such as lenses and cylinders) are currently the mainstream defocus lenses. For example, patent "Eyeglass Lens" (2013106281748) discloses an eyeglass lens for correcting peripheral hyperopic defocus of the retina. This lens consists of a first refractive area with a uniform and smooth refractive mirror surface and a second refractive area composed of multiple independent island-shaped microlenses forming a 360° annular refractive surface. Because these microstructures often use microlenses, when the incident light is strong, they can create light spots of varying intensities on the fundus. When the light is excessively strong, this can lead to excessively high local contrast, which is detrimental to myopia management. Furthermore, the edges of the microstructures can exhibit abrupt changes in power, deviating from the ideal additional refractive power. High abrupt changes in power can cause excessively strong local light spots in the fundus due to the microstructures. Therefore, preventing the formation of excessively strong light spots in the fundus due to these microstructures is an urgent problem to be solved. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to propose a unit microstructure lens that softens the intensity of defocused light spots on the fundus, so as to solve the problems of excessively strong light spots and high local contrast of light spots formed by microstructures on the fundus. At the same time, it softens the intensity of the light spots on the fundus after passing through the microstructure and provides stable defocus signal stimulation, thereby providing a more effective myopia management lens.

[0004] Technical solution: This utility model includes a refractive correction substrate and a functional area attached to its surface. The functional area divides the substrate into: a central area, a multi-unit microstructure area, and a hyperopic defocus correction area. The multi-unit microstructure area includes several unit microstructures, each unit microstructure including one microstructure with high additional defocus and at least two microstructures with low additional defocus. Each microstructure with low additional defocus is in close contact with the microstructure with high additional defocus. The microstructure with low additional defocus is passivated. The passivated microstructure with low additional defocus can increase the spot size of the microstructure with high additional defocus that is adjacent to it in the fundus, balancing the light intensity at its edge and center.

[0005] The additional defocus range of the microstructure with high additional defocus is +2.5D to 4.5D, and the additional defocus range of the microstructure with low additional defocus is 0D to 0.5D.

[0006] The microstructure with low additional defocus has a transmittance of less than 50% after passivation, which increases the scattering ability. Light will be refracted and scattered simultaneously after passing through this area.

[0007] The effective diameter range of the microstructures in the high additional defocus amount and low additional defocus amount microstructures is 0.8~2mm.

[0008] The central zone provides full corrected visual acuity for clear imaging; the corrected refractive power range of the central zone is -10D to 10D.

[0009] The absolute value of the refractive power of the corrected hyperopic defocus zone is smaller than the absolute value of the refractive power of the central zone, and its refractive power gradually increases from the inside to the outside, with the edge refractive power not exceeding +1.5D of the central zone refractive power.

[0010] The passivation effect is not limited to grinding the mold into a rough form or laser engraving dots on the mold or lens. The engraved pattern is not limited to dot pattern, line pattern, curve pattern, dot-line pattern, etc.

[0011] Beneficial effects: The microstructure lens of this utility model is composed of many unit microstructures, and each unit microstructure consists of one microstructure with high additional defocus and at least two microstructures with low additional defocus. The microstructure with low additional defocus is passivated, which can increase the size of the light spot on the fundus of the microstructure with high additional defocus that is close to it, balance the light intensity at the edge and center, so as to achieve the purpose of softening the light intensity, thereby providing a more effective myopia management solution. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the lens structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the microstructure passivation pattern with low additional defocus in the lens of this utility model. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Example 1

[0016] like Figure 1 As shown, the unit microstructure lens of this utility model for softening the intensity of defocused light spots on the fundus includes a refractive correction substrate and a functional area attached to its surface. The functional area divides the substrate into three regions: a central region 1, a multi-unit microstructure region 2, and a hyperopic defocus correction region 3.

[0017] Central zone 1 provides the corrected refractive power for clear imaging; the corrected refractive power range of central zone 1 is -10D to 10D.

[0018] The multi-unit microstructure region 2 includes several unit microstructures that provide defocus signal stimulation and soft defocus spots to the fundus. Each unit microstructure includes one microstructure 201 with high additional defocus and at least two microstructures 202 with low additional defocus. Each low additional defocus microstructure 202 is in close contact with the high additional defocus microstructure 201. The low additional defocus microstructures 202 are passivated to reduce their transmittance and increase their scattering ability. The passivation effect is not limited to roughening the mold or laser engraving dots on the mold or lens. The engraved patterns are not limited to dot patterns, line patterns, curve patterns, dot-line patterns, etc. Figure 2 As shown, the passivated microstructure 202 with low additional defocus can increase the spot size of the microstructure 201 with high additional defocus adjacent to it in the fundus, balance the light intensity at its edge and center, and achieve the purpose of softening the light intensity. Both the high-addition-defocus microstructure 201 and the low-addition-defocus microstructure 202 focus in front of the retina. The high-addition-defocus microstructure 201 is farther from the retina than the low-addition-defocus microstructure 202. Under the same size microlens conditions, the spot of the high-addition-defocus microstructure 201 on the fundus is larger than that of the low-addition-defocus microstructure 202. Due to the increased scattering ability of the low-addition-defocus microstructure 202 after passivation, its spot on the retina is enlarged. Since the high-addition-defocus microstructure 201 and the low-addition-defocus microstructure 202 are closely connected, their spots on the retina will overlap. That is, the spot of the high-addition-defocus microstructure 201 is in the center, and the spot of the low-addition-defocus microstructure 202 is surrounded by the spot of the low-addition-defocus microstructure 202. The overlap of the spots of the two closely adjacent microstructures can increase the spot of the high-addition-defocus microstructure 201 on the fundus. The light spot of the microstructure 201 with high additional defocus is bright in the center and dark at the edge in the fundus. The light spot of the passivated microstructure 202 with low additional defocus is more uniformly distributed. The microstructures 202 with low additional defocus around the microstructure 201 with high additional defocus cause their light spots to overlap. The light spot of the microstructure 202 with low additional defocus overlaps with the edge of the microstructure 201 with high additional defocus, which can increase the brightness of the edge and reduce the brightness difference between the edge and the center, that is, balance the light intensity of the edge and the center, so as to achieve the purpose of softening the light intensity.

[0019] The microstructure 201 with high additional defocus has an additional defocus range of +2.5D to 4.5D, while the microstructure 202 with low additional defocus has an additional defocus range of 0D to 0.5D. The transmittance of the passivated microstructure 202 with low additional defocus is less than 50%. The microstructures are not limited to microlenses or cylindrical lenses, and their effective diameter ranges from 0.8 to 2 mm.

[0020] The absolute value of the refractive power in the corrected hyperopic defocus zone 3 is smaller than that in the central zone, bringing the fundus imaging surface closer to the fundus and reducing hyperopic defocus. The refractive power in the corrected hyperopic defocus zone 3 gradually increases from the inside out, with its peripheral refractive power not exceeding +1.5D of the central zone refractive power.

[0021] The microstructure lens of this invention is composed of multiple unit microstructures, and each unit microstructure consists of one microstructure with high additional defocus and at least two microstructures with low additional defocus. The microstructure with low additional defocus is passivated, which can increase the size of the light spot on the fundus of the adjacent high additional defocus microstructure, balance the light intensity at the edge and center, and achieve the purpose of softening the light intensity, thereby providing a more effective myopia management solution.

[0022] Example 2

[0023] This embodiment of the unit microstructure lens includes a refractive correction substrate and functional areas attached to its surface. The functional areas divide the substrate into three regions: a central region 1, a multi-unit microstructure region 2, and a hyperopic defocus correction region 3. Each unit microstructure consists of one high-addition-defocus microstructure 201 and at least two low-addition-defocus microstructures 202. The low-addition-defocus microstructures 202 are passivated by a roughening process using a mold. The high-addition-defocus microstructure 201 has an additional defocus of 3.5D, and the low-addition-defocus microstructures 202 have an additional defocus range of 0.2D. The passivated low-addition-defocus microstructures 202 have a transmittance of less than 50%. The microstructures are in lens form with an effective diameter of 0.9mm. The central region 1 has a corrected refractive power of -2D, and the refractive power of the hyperopic defocus correction region 3 gradually increases from the inside out, with an edge refractive power of -1.5D.

[0024] Example 3

[0025] The unit microstructure lens of this embodiment includes a refractive correction substrate and functional areas attached to its surface. The functional areas divide the substrate into three regions: a central region 1, a multi-unit microstructure region 2, and a hyperopic defocus correction region 3. Each unit microstructure consists of one high-addition-defocus microstructure 201 and at least two low-addition-defocus microstructures 202. The low-addition-defocus microstructures 202 are passivated, and the passivation effect is as follows: Figure 2 As shown. The microstructure 201 with high additional defocus has an additional defocus of 4D, while the microstructure 202 with low additional defocus has an additional defocus range of 0.5D. The passivated microstructure 202 with low additional defocus has a transmittance of less than 50%. The microstructure is in the form of a lens with an effective diameter of 1mm. The passivation effect is achieved by laser engraving dots, such as... Figure 2 As shown. The corrected refractive power of the central area 1 is -3D, and the refractive power of the hyperopic defocus area 3 gradually increases from the inside to the outside, with its peripheral refractive power being -2.5D.

Claims

1. A unit microstructure lens that softens the intensity of defocused light spots on the fundus, characterized in that, It includes a refractive correction substrate and a functional area attached to its surface. The functional area divides the substrate into a central area, a multi-unit microstructure area, and a hyperopic defocus correction area. The multi-unit microstructure area includes several unit microstructures, each of which includes one microstructure with high additional defocus and at least two microstructures with low additional defocus. Each microstructure with low additional defocus is in close contact with the microstructure with high additional defocus. The microstructure with low additional defocus is passivated. The passivated microstructure with low additional defocus can increase the spot size of the microstructure with high additional defocus that is adjacent to it in the fundus, and balance the light intensity at its edge and center.

2. The unit microstructure lens for softening the intensity of defocused light spots on the fundus according to claim 1, characterized in that, The additional defocus range of the microstructure with high additional defocus is +2.5D to 4.5D, and the additional defocus range of the microstructure with low additional defocus is 0D to 0.5D.

3. The unit microstructure lens for softening the intensity of defocused light spots on the fundus according to claim 1, characterized in that, The transmittance of the microstructure with low additional defocus is less than 50% after passivation. When light passes through the area where the microstructure with low additional defocus is located, it will be refracted and scattered at the same time.

4. The unit microstructure lens for softening the intensity of defocused light spots on the fundus according to claim 1, characterized in that, The effective diameter range of the microstructures in the high additional defocus amount and low additional defocus amount microstructures is 0.8~2mm.

5. The unit microstructure lens for softening the intensity of defocused light spots on the fundus according to claim 1, characterized in that, The central zone provides full corrected visual acuity for clear imaging; the corrected refractive power range of the central zone is -10D to 10D.

6. The unit microstructure lens for softening the intensity of defocused light spots on the fundus according to claim 1, characterized in that, The absolute value of the refractive power in the corrected hyperopic defocus zone is smaller than the absolute value of the refractive power in the central zone.

7. The unit microstructure lens for softening the intensity of defocused light spots on the fundus according to claim 1 or 6, characterized in that, The refractive power of the corrected hyperopic defocus zone gradually increases from the inside to the outside, and its edge refractive power does not exceed +1.5D of the central zone refractive power.

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