CN216118261U - Out-of-focus spectacle lens with micro-lens array and spectacles - Google Patents

Abstract

The application provides out-of-focus glasses with a micro-lens array and glasses. The out-of-focus spectacle lens with the micro lens array comprises a first surface and a second surface opposite to the first surface, wherein a regular polygon gridding area is set outside a clear vision area of the first surface, and micro lenses are arranged in each regular polygon grid. The out-of-focus spectacle lens is designed according to the preset energy proportion entering human eyes, and the experience of a wearer can be greatly improved.

Description

Out-of-focus spectacle lens with micro-lens array and spectacles

Technical Field

The application belongs to the technical field of optics, and relates to a out-of-focus spectacle lens with a micro-lens array and spectacles.

Background

In recent years, social progress, science and rapid development are achieved, the load of near-distance eye use of teenagers is continuously increased, the incidence rate of the teenagers with myopia and the deepening of myopia diopters are more and more serious, and an ideal treatment method is not available at present. Myopia is a global social problem and a medical problem, and peripheral hyperopic defocus of retina is a core pathogenesis of myopia. With the improvement of the requirements of people on light weight, functionality, comfort, novelty and the like of the ophthalmic lenses, the traditional ophthalmic lenses cannot meet the requirements of the modern eyeglass industry, and the peripheral out-of-focus ophthalmic lenses are about to become mainstream corrective control ophthalmic lenses.

For example, the spectacle lens with defocus around the periphery of the micro-lens related in chinese patent CN110687689A is configured as a central correction area, a nasal micro-lens area, a temporal micro-lens area, and a lower micro-lens area, wherein the nasal micro-lens area and the temporal micro-lens area are respectively configured with two progressive micro-lens areas and full micro-lens areas with different refractive powers, so as to achieve the purpose of correcting myopia-related defocus in the center of the retina of the myopic eye and correcting asymmetric hypermetropic defocus around the retina of the myopic eye, nose and temporal. However, the lens does not consider the different light sensitivities of human eyes at different angles, and the uniform division of the micro-lens structure makes the comfort of a wearer not enough when wearing the defocusing lens.

SUMMERY OF THE UTILITY MODEL

To overcome the above-mentioned drawbacks, the present application aims to: provides a defocusing spectacle lens with a micro lens array and spectacles, and can also improve the popularization degree of the defocusing spectacle lens on the basis.

In order to achieve the purpose, the following technical scheme is adopted in the application:

an out-of-focus ophthalmic lens having a microlens array,

the out-of-focus spectacle lens has:

a first surface and a second surface opposite to the first surface, the second surface and the first surface together forming a refractive effect,

setting a regular polygon gridding area outside the clear vision area of the first surface,

the regular polygon gridding area comprises regular polygon meshes, and each regular polygon mesh is provided with a micro lens. Through the design, the structure of the spectacle lens is further improved according to the theoretical basis by arranging the micro lenses in size and taking the micro lenses as the theoretical basis so as to improve the comfort level of the myopia people wearing the spectacles.

Preferably, the regular polygon gridding area is arranged in an area with a field angle between 20 and 70 degrees outside the clear vision area of the first surface.

Preferably, the regular polygonal mesh is a regular hexagonal mesh or a regular octagonal mesh.

Preferably, the out-of-focus spectacle lens with the microlens array is characterized by being based on a calculation formula

Calculating the microlens area percentage Ratio of the regular polygon mesh,

wherein r is the half aperture of the microlens, and S is the area of the regular polygon mesh.

Preferably, the out-of-focus spectacle lens is a resin lens.

The embodiment of the application provides a pair of spectacles, which comprises the out-of-focus spectacle lens.

Advantageous effects

The application provides a out-of-focus lens with microlens array has:

1) the out-of-focus spectacle lens is designed according to the preset energy ratio of human eyes, so that the experience of a wearer can be greatly improved.

2) The wearing comfort of the focusing lens is enhanced.

Drawings

FIG. 1 is a schematic diagram of an energy occupancy ratio corresponding to a preset field angle of a human eye;

FIG. 2 is a schematic view of eyewear worn by a human eye;

FIG. 3 is a schematic view of a regular polygonal gridding area and a microlens in an embodiment;

fig. 4 is a schematic diagram of the relationship between the half aperture r of the microlens and the side length L of the regular hexagon grid when the field angle is 30 degrees and 40 degrees in the embodiment.

In the figure, 10 is the first surface; 20 is a second surface; 11 is a regular polygon gridding area; 12 is a microlens; 13 is a regular polygon mesh; and 14 is a photopic vision region.

Detailed Description

The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present application. The conditions employed in the examples may be further adjusted as determined by the particular manufacturer, and the conditions not specified are typically those used in routine experimentation.

An out-of-focus spectacle lens having a microlens array, as shown in fig. 2, has: a first surface 10 and a second surface 20 opposite to the first surface, as shown in fig. 3, a regular polygon gridding area 11 is set outside a photopic region 14 of the first surface 10; a microlens 12 is arranged in each regular polygon mesh 13 in the regular polygon gridding area.

It should be noted that the regular polygon mesh is used to provide the position coordinates for configuring the microlenses, and the division of the position area is only given for the convenience of defining the position of the microlenses on the mirror surface, and does not mean a component in which the regular polygon mesh is provided on the first surface.

Preferably, the photopic vision area is a 0-20 degree field angle area of the defocused spectacle lens with the micro lens array; the regular polygon gridding area is an area corresponding to a 20-70-degree field angle on the first surface; the area exceeding 70 degrees is not within the range of use and the microlenses are no longer arranged.

In the out-of-focus spectacle lens, a 0-20 degree field angle area is a photopic vision area of the spectacles, and an out-of-focus micro lens is not arranged in the area; an out-of-focus micro lens is arranged between 20 and 70 degrees; the defocused micro-lenses are not arranged in the area beyond 70 degrees. The out-of-focus spectacle lens is designed according to the preset energy ratio of the eyes of the wearer, so that the experience of the wearer can be greatly improved. The energy occupation proportion corresponding to the preset field angle of the human eyes is obtained after the applicant acquires a large amount of data and performs curve fitting, and the proportion of the energy preset by the eyes can be represented (simulated) by the area percentage of a regular polygon mesh (such as a hexagonal mesh or a regular octagonal mesh) occupied by the area of the micro lens.

The present application will be described with reference to the drawings and by taking the regular hexagonal gridding area as an example,

fig. 1 is a schematic diagram of an energy occupancy Ratio corresponding to a preset field angle Theta of an eye, in which an abscissa is the field angle, an ordinate is an energy occupancy Ratio, a region of the field angle from 0 to 20 degrees is a clear view region, a region of the field angle from 20 to 70 degrees is an out-of-focus region, and the curve is obtained by fitting after data statistics.

Fig. 2 is a schematic diagram simulating that the human Eye wears an out-of-focus spectacle lens, wherein d in fig. 2 is the distance between a focal plane generated by a micro lens and a focal plane generated by a main lens area, Theta is an angle of view, and Eye is a position of the human Eye, and a first surface and a second surface (an Eye-approaching side) opposite to the first surface are arranged on one side of the out-of-focus spectacle lens.

As shown in fig. 3, which is a schematic structural diagram of the spectacle lens with defocus according to the embodiment of the present application at a viewing angle, a 0-20 degree viewing angle region of the first surface of the spectacle lens with defocus is a bright viewing region, a 20-70 degree viewing angle region outside the first surface is a regular hexagonal gridding region, and microlenses are arranged in each hexagonal grid. In this way, the ratio of the area of the micro-lens to the area of the regular hexagonal grid can be regarded as the energy ratio of light entering human eyes under the corresponding field angle. The out-of-focus spectacle lens is a resin lens.

Next, a method for designing the above-described out-of-focus spectacle lens is described, the method comprising:

s1, acquiring a main focal length F of a defocused spectacle lens, wherein in the step, according to the refractive index n of the spectacle lens and the curvature radius r of a first surface₁Radius of curvature r of the second surface₂Calculating to obtain a main focal length F;

s2, calculating the secondary focal length f of the micro lens and the curvature radius R of the micro lens,

in the step, the focal length f of the micro lens is calculated according to the distance d between the focal plane generated by the micro lens and the focal plane generated by the main lens area, and then the curvature radius R of the micro lens is calculated by the following formula;

s3, calculating the preset energy occupation proportion of human eyes under different field angles,

recording the most comfortable energy output ratio sensed by a plurality of glasses wearers under different angles of view, then carrying out curve fitting on the obtained scatter diagram of the relationship between the angle of view and the energy, and obtaining the preset energy ratio of the human eyes under different angles of view, which is shown in table 1 (the preset energy ratio table of the human eyes under different angles of view);

TABLE 1 energy ratio table preset by human eyes under different angles of view

Angle of view	0	10	20	30	40	50	60	70	80
										Ratio	0.8	0.8	0.8	0.76	0.73	0.7	0.67	0.65	0.6

S4, based on calculation formula

Calculating the half aperture r of the micro-lens, wherein S₁The area of the regular hexagonal grid is shown, and L is the side length of the regular hexagonal grid;

in the step, the side length L of the regular hexagonal grid is normalized to obtain the corresponding half aperture of the micro lens as shown in table 2, and the corresponding half aperture is multiplied by the corresponding proportion in specific calculation, table 2, angle of view, energy/area ratio and half aperture comparison table

Angle of view	0	10	20	30	40	50	60	70	80
										Ratio	0.8	0.8	0.8	0.76	0.73	0.7	0.67	0.65	0.6
Half caliber	0	0	0	0.8	0.78	0.76	0.73	0.72	0.7

Thus, the curvature radius R of the microlens and the microlens semi-aperture R are obtained.

Fig. 4 shows the relationship between the half-aperture r of the microlens and the side length L of the regular hexagonal grid when the field angle (Theta) is 30 degrees and 40 degrees, respectively.

The above design method will be described with specific examples.

In one example: the refractive index n of the lens (out-of-focus spectacle lens) is 1.597 (nominal refractive index 1.6), the myopia is 300 degrees, and the radius of curvature r of the first surface of the lens₁392.76mm, the radius of curvature r of the second surface₂131.2mm, neglecting center thickness, is given by:

the main focal length F of the lens can be calculated to be 328.35mm, the distance d between the focal plane generated by the micro lens and the focal plane generated by the main lens area is 10mm, if the distance d is 10mm ahead, the focal length F of the micro lens is 318.35mm, which is represented by the following formula:

the microlens radius of curvature R can be calculated to be 419 mm.

Taking an angle of view of 40 degrees as an example, if the side length L of the regular hexagonal grid is 2mm, the half aperture r of the microlens is 1.56mm, which is 2 × 0.78.

In another example: refractive index n of the lens is 1.499 (nominal refractive index 1.49), 400 degrees of myopia, and radius of curvature r of the first surface of the lens₁457.8mm, the radius of curvature r of the second surface₂98mm, neglecting center thickness, can be given by:

calculating to obtain the main focal length F of the lens to be 254.47mm, and setting the distance d between the focal plane generated by the micro lens and the focal plane generated by the main lens area to be 10mm, if the distance d is 10mm backwards, the focal length F of the micro lens is 264.47mm, which is represented by the following formula:

the microlens radius of curvature R can be calculated to be 402.02 mm.

Taking an example of a field angle of 60 degrees, if the side length L of the regular hexagonal grid is 5mm, the half aperture r of the microlens is 5 × 0.73 — 3.65 mm.

In another example: refractive index n of the lens is 1.499 (nominal refractive index 1.49), 400 degrees of myopia, and radius of curvature r of the first surface of the lens₁457.8mm, the radius of curvature r of the second surface₂The focal length F of the lens calculated in the previous embodiment is 254.47mm when the central thickness is ignored, the distance d between the focal plane generated by the microlens and the focal plane generated by the main lens area is 20mm, and if the focal plane is 20mm ahead, the focal length F of the microlens is 234.47mm, which is expressed by the following formula:

the microlens radius of curvature R can be calculated to be 666.61 mm.

Taking an example of a 60-degree field angle, if the side length L of the regular hexagonal grid is 6mm, the half aperture r of the microlens is 6 × 0.73 — 4.38 mm.

The present application also provides an eyeglass comprising the above-mentioned spectacle out-of-focus lens obtained by the above-mentioned design method. The glasses are designed into the out-of-focus glasses lens according to the energy proportion preset by the eyes of a wearer, so that the experience of the wearer can be greatly improved.

The above embodiments are merely illustrative of the technical concepts and features of the present application, and the purpose of the embodiments is to enable those skilled in the art to understand the content of the present application and implement the present application, and not to limit the protection scope of the present application. All equivalent changes and modifications made according to the spirit of the present application are intended to be covered by the scope of the present application.

Claims (6)

1. An out-of-focus ophthalmic lens having a microlens array,

the out-of-focus spectacle lens has:

a first surface and a second surface opposite to the first surface, the second surface and the first surface together forming a refractive effect,

setting a regular polygon gridding area outside the clear vision area of the first surface,

the regular polygon gridding area comprises regular polygon meshes, and each regular polygon mesh is provided with a micro lens.

2. The out-of-focus spectacle lens with microlens array as claimed in claim 1,

the regular polygon gridding area is arranged in an area with a field angle between 20 and 70 degrees outside the clear vision area of the first surface.

3. The out-of-focus spectacle lens with microlens array as claimed in claim 1,

the regular polygonal grids are regular hexagonal grids or regular octagonal grids.

4. The out-of-focus ophthalmic lens with microlens array of any one of claims 1 to 3, based on a calculation formula

Calculating the microlens area percentage Ratio of the regular polygon mesh,

wherein r is the half aperture of the microlens, and S is the area of the regular polygon mesh.

5. The out-of-focus spectacle lens with microlens array as claimed in claim 1,

the out-of-focus spectacle lens is a resin lens.

6. An eyeglass comprising an out-of-focus eyeglass lens with a microlens array according to any of claims 1 to 5.

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