Fog and sand multi-point out-of-focus lens

Abstract

The utility model discloses a fog and sand multi-point out-of-focus lens, which comprises a lens, the center of the lens is a central bright vision area 2, the periphery of the central bright vision area 2 is an out-of-focus reinforcing area, the periphery of the out-of-focus reinforcing area is a fog-sand gradual change area, the out-of-focus reinforcing area and the fog-sand gradual change area are in an annular belt shape, the fog-sand gradual change area is divided into a first fog-sand area, a second fog-sand area and a third fog-sand area, the width of the first fog-sand area is the same as that of the out-of-focus reinforcing area, and the width of the third fog-sand area is the same as that of the second fog-sand area. The width of the second fog sand area is the same as that of the third fog sand area, and the width of the second fog sand area is larger than that of the first fog sand area. According to the utility model, the fog and sand gradual change area is arranged at the periphery of the out-of-focus reinforcing area, and the fog and sand gradual change area enables light rays penetrating through the lens to generate a strong and weak gradual change state from inside to outside, so that visual images transmitted by the central bright visual area 2 and the out-of-focus reinforcing area are highlighted, the contrast ratio is improved, the definition of the area is enhanced, and the visual image interference outside the area is weakened; eye strabismus is prevented, and vision degree deepening is inhibited.

Description

Technical Field

[0001] The utility model belongs to the technical field of lenses, and in particular relates to a fog and sand multi-point defocusing lens. Background Art

[0002] The eyeballs of adolescents are in the growth and development stage, with strong adjustment ability and susceptible to interference from multiple factors. The occurrence and development of myopia is gradual, superimposed and irreversible. Once it is formed, the opportunity for prevention and control will be lost. Therefore, the research on the prevention and control methods of adolescent myopia has very important medical and social significance.

[0003] When a myopic person looks at an object, the central and peripheral images of the object are projected in front of the retina. Using a myopic single-vision corrective lens, the central image can be projected on the retina, and the peripheral image moves backward with the central image and falls behind the retina. The peripheral retina will send out a stimulation signal that the vision is defective, notifying the eyeball to stretch, causing the retina to grow backwards and stimulating the growth of the eye axis, thereby causing myopia to increase every year. In order to control the increase in myopia, a foggy multi-point defocus lens is provided. Summary of the invention

[0004] In view of this, the technical problem to be solved by the utility model is to provide a fog and sand multi-point defocus lens, which solves the problem of increased myopia caused by wearing ordinary myopia lenses in the prior art.

[0005] In order to solve the above technical problems, the utility model discloses a fog and sand multi-point defocus lens, comprising: a lens; the center of the lens is a central clear vision area, the periphery of the central clear vision area is a defocus enhancement area, the periphery of the defocus enhancement area is a fog and sand gradient area, the defocus enhancement area and the fog and sand gradient area are in a ring shape, the fog and sand gradient area is divided into a first fog and sand area, a second fog and sand area and a third fog and sand area, the width of the first fog and sand area is the same as the width of the defocus enhancement area, the width of the second fog and sand area is the same as the width of the third fog and sand area, and the width of the second fog and sand area is greater than the width of the first fog and sand area.

[0006] Furthermore, the above-mentioned defocus enhancement area has multiple circles of microlens groups, and the microlenses in the second circle to the nth circle are spaced and distributed on the vertical line of the center line of two adjacent microlenses in the previous circle of microlens groups.

[0007] Furthermore, the first fog sand area has convex parts distributed in a rectangular array, the diameter of the convex parts is 0.4 mm, and the convex parts are distributed at intervals of 3 mm.

[0008] Furthermore, the convex parts in the second fog sand area are spaced 2 mm apart.

[0009] Furthermore, the convex parts in the third fog sand area are spaced 1.5 mm apart.

[0010] Compared with the prior art, the present application can obtain the following technical effects:

[0011] The utility model arranges a fog and sand gradient zone on the periphery of the defocus enhancement zone, and the fog and sand gradient zone causes the light passing through the lens to produce a strong and weak gradient state from the inside to the outside, thereby highlighting the transmitted visual images of the central clear vision zone and the defocus enhancement zone, improving the contrast, enhancing the clarity of the zone, reducing the visual interference outside the zone, preventing the eyes from squinting, and suppressing the deepening of the visual intensity.

[0012] Of course, any product implementing this application does not necessarily need to achieve all of the technical effects described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0014] Figure 1 It is a schematic diagram of a lens according to one embodiment of the present invention.

[0015] Attached photos

[0016] Lens 1, central clear vision area 2, defocus enhancement area 3, first fog and sand area 4, second fog and sand area 5, third fog and sand area 6, raised part 7. DETAILED DESCRIPTION

[0017] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0018] Please refer to Figure 1 , Figure 1 It is a schematic diagram of a lens according to one embodiment of the present invention.

[0019] A fog and sand multi-point defocus lens comprises: a lens 1; the center of the lens 1 is a central clear vision area 2, the periphery of the central clear vision area 2 is a defocus enhancement area 3, the periphery of the defocus enhancement area 3 is a fog and sand gradient area, the defocus enhancement area 3 and the fog and sand gradient area are in a ring-shaped shape, the fog and sand gradient area is divided into a first fog and sand area 4, a second fog and sand area 5 and a third fog and sand area 6, the width of the first fog and sand area 4 is the same as the width of the defocus enhancement area 3, the width of the second fog and sand area 5 is the same as the width of the third fog and sand area 6, and the width of the second fog and sand area 5 is greater than the width of the first fog and sand area 4.

[0020] The defocus enhancement area 3 has multiple circles of microlens groups, and the microlenses in the second circle to the nth circle are spaced and distributed on the vertical line of the center line of two adjacent microlenses in the previous circle of microlens groups.

[0021] The first fog and sand area 4 has raised portions 7 distributed in a rectangular array. The raised portions 7 serve to block the line of sight. The diameter of the raised portions 7 is 0.4 mm. The raised portions 7 are spaced 3 mm apart. The raised portions 7 in the second fog and sand area 5 are spaced 2 mm apart. The raised portions 7 in the third fog and sand area 6 are spaced 1.5 mm apart.

[0022] In summary, the utility model sets a fog and sand gradient zone on the periphery of the defocus enhancement zone 3. The fog and sand gradient zone makes the light passing through the lens 1 produce a strong and weak gradient state from the inside to the outside, thereby highlighting the transmitted visual image of the central clear vision zone 2 and the defocus enhancement zone, improving the contrast, enhancing the clarity of the area, reducing the visual interference outside the area, preventing the eyes from squinting, and suppressing the deepening of the visual intensity.

[0023] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A fog and sand multi-point defocus lens, comprising: lens; The lens is characterized in that the center of the lens is a central clear vision area, the periphery of the central clear vision area is a defocus enhancement area, the periphery of the defocus enhancement area is a fog and sand gradient area, the defocus enhancement area and the fog and sand gradient area are ring-shaped, and the fog and sand gradient area is divided into a first fog and sand area, a second fog and sand area and a third fog and sand area, the width of the first fog and sand area is the same as the width of the defocus enhancement area, the width of the second fog and sand area is the same as the width of the third fog and sand area, and the width of the second fog and sand area is greater than the width of the first fog and sand area.

2. The fog and sand multi-point defocus lens according to claim 1, characterized in that: The defocus enhancement area has multiple circles of microlens groups, and the microlenses in the second circle to the nth circle are spaced and distributed on a vertical line connecting the centers of two adjacent microlenses in the previous circle of microlens groups.

3. The fog and sand multi-point defocus lens according to claim 2, characterized in that: The diameters of the microlenses in adjacent microlens groups are not equal, the diameters of the microlenses in the odd-numbered microlens groups are equal, and the diameters of the microlenses in the even-numbered microlens groups are equal.

4. The fog and sand multi-point defocus lens according to claim 1, characterized in that: The first fog sand area has convex parts distributed in a rectangular array, the diameter of the convex parts is 0.4 mm, and the convex parts are distributed at intervals of 3 mm.

5. The fog and sand multi-point defocus lens according to claim 1, characterized in that: The protrusions in the second fog sand area are spaced 2 mm apart.

6. The fog and sand multi-point defocus lens according to claim 1, characterized in that: The protrusions in the third fog sand area are spaced 1.5 mm apart.

Images