Out-of-focus lens
By designing a defocus lens containing microlens and arc square curves, the problems of the existing myopia lenses lead to axial stretching and vision loss are solved, and the effect of preventing and controlling myopia deepening and improving wear comfort is achieved.
Patent Information
- Application Number
- CN202420138373.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-01-19
AI Technical Summary
When the existing myopia lenses are worn by users, some of the optical focus falls behind the retina, resulting in axial stretching, vision loss and myopia deepening after long-term use.
Design a defocused lens. The lens body consists of two sets of lens monomers that fit each other. Multiple microlenses are arranged on the inside. The lens body is divided into a central prescription area and a defocused area from the center to the outer edge. The defocused area is non- Continuous honeycomb bionic defocus refractive area, microlenses are distributed inside the defocus area.
Through the equidistance arrangement of the microlenses and the arc square curve design, the defocus surface is formed, which effectively suppresses the elongation of the eyeball, prevents and controls myopia to deepen, and improves wear comfort and field of vision clarity.
Smart Images
Figure CN222506686U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lenses, in particular to a defocused lens. Background Art
[0002] There are many myopic students in junior high school, high school and college in my country. The simple and effective method available is to wear glasses to correct vision, that is, myopia glasses. Myopia glasses diverge and focus light onto the retina.
[0003] For teenagers, their eyeballs are still in the development stage. When they wear myopic glasses, the optical focus of the peripheral part of the lens falls behind the retina, causing the eye axis to stretch, which in turn causes more serious vision loss.
[0004] The ordinary spherical, aspherical and other myopia lenses currently used do not have the function of preventing myopia from worsening. When worn by users, ordinary spherical, aspherical and other myopia lenses will cause part of the optical focus to fall behind the retina, causing the eye axis to stretch. Long-term use will lead to further deterioration of vision and worsening of myopia. Utility Model Content
[0005] The utility model aims to provide a defocus lens which has the characteristics of being comfortable to wear and preventing myopia from getting worse.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a defocus lens, comprising a lens body, the lens body comprising two groups of lens monomers bonded to each other, a plurality of microlenses are arranged on the inner side of the lens body, the plurality of microlenses are located between the two groups of lens monomers, the lens body is divided into a central prescription area and a defocus area from the center to the outer edge, the defocus area is a non-continuous honeycomb bionic defocus refractive area, a plurality of microlenses are distributed inside the defocus area, the central prescription area is an arc square, and a group of arc square curves evenly arranged around the central prescription area are provided in the defocus area.
[0007] In order to arrange the microlenses equidistantly, as a preferred defocus lens of the utility model, the circular arc square curve includes a first arc line, a second arc line, a third arc line and a fourth arc line in sequence, and the first arc line, the second arc line, the third arc line and the fourth arc line all bulge toward the defocus area.
[0008] In order to facilitate the equidistant arrangement of the micro lenses, as a preferred defocus lens of the utility model, the micro lenses are equidistantly arranged in sequence on an arc square curve from the center to the outside inside the defocus area.
[0009] In order to improve the effect of preventing and controlling myopia, as a preferred defocus lens of the present invention, a first square ring is provided at the central edge of the defocus area, a second square ring is provided at the outer edge of the defocus area, and a plurality of circular arc square curves are provided between the first square ring and the second square ring.
[0010] In order to prevent and control the progression of myopia, as a preferred defocus lens of the utility model, the microlenses are gradually dispersed and arranged from the first square ring to the second square ring, and the distance between adjacent microlenses is 1.5-1.8 mm.
[0011] In order to enhance the user experience, as a preferred defocus lens of the present invention, the inner space of the arc square curve is left-right symmetrical about the optical center of the defocus lens, and the maximum height of the inner space of the innermost arc square curve is 13mm~14mm, and the maximum width is 22mm~23mm.
[0012] In order to improve the wearer's comfort, as a preferred defocus lens of the present invention, the microlens is arranged on the joint surface of two groups of lens monomers, and the protrusion of the microlens faces the lens monomer with a low refractive index.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] Through the arc-square design of the central prescription area, the microlenses are arranged and distributed gradually and evenly from the inside to the outside, which can ensure the clarity of the wearer's field of vision. At the same time, the arc-square can also correct the refractive power of the prescription for refractive errors, simulate the visible area of progressive lenses, and improve wearing comfort. By arranging microlenses between the two groups of lens monomers to form a defocus area, the defocus area has more light than the central prescription area, forming a defocus plane in front of the user's retina, thereby achieving the user's vision correction while effectively inhibiting the elongation of the eyeball and playing a role in preventing and controlling myopia. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a three-dimensional structural diagram of the utility model;
[0016] Figure 2 It is a right side cross-sectional structural diagram of the utility model;
[0017] Figure 3 For this utility model Figure 2 The structure diagram at A is enlarged;
[0018] Figure 4 This is a schematic diagram of the defocus lens of the utility model;
[0019] Figure 5 This is a schematic diagram of the circular arc square curve of the utility model;
[0020] Figure 6 It is a schematic diagram of the defocusing area of the utility model.
[0021] In the figure: 1. lens body; 2. lens monomer; 3. microlens; 4. central prescription area; 501. first arc; 502. second arc; 503. third arc; 504. fourth arc; 6. out-of-focus area; 701. first square ring; 702. second square ring. DETAILED DESCRIPTION
[0022] See also Figures 1 to 6 A defocus lens comprises a lens body 1, wherein the lens body 1 comprises two groups of lens monomers 2 bonded to each other, a plurality of microlenses 3 are arranged on the inner side of the lens body 1, and the plurality of microlenses 3 are located between the two groups of lens monomers 2. The lens body 1 is divided into a central prescription area 4 and a defocus area 6 from the center to the outer edge, wherein the defocus area 6 is a non-continuous honeycomb bionic defocus refractive area, and the plurality of microlenses 3 are distributed inside the defocus area 6. The central prescription area 4 is an arc square, and a group of arc square curves evenly arranged around the central prescription area 4 are provided in the defocus area 6.
[0023] In this embodiment: the lens body 1 includes two groups of lens monomers 2 bonded to each other, wherein the lens monomer 2 is a resin monomer, and the central prescription area 4 is an arc-shaped square. Through the arc-shaped square design of the central prescription area 4, the microlenses 3 can be arranged and distributed gradually and evenly from the inside to the outside, which can ensure the clarity of the wearer's field of vision. At the same time, the arc-shaped square can also correct the refractive power of the prescription for ametropia, simulate the visible area of progressive lenses, and improve wearing comfort.
[0024] As a technical optimization solution of the utility model, the circular arc square curve includes a first arc line 501, a second arc line 502, a third arc line 503 and a fourth arc line 504 in sequence, and the first arc line 501, the second arc line 502, the third arc line 503 and the fourth arc line 504 all protrude toward the defocus area 6.
[0025] In this embodiment: the first arc 501, the second arc 502, the third arc 503 and the fourth arc 504 are connected end to end to form a central prescription area 4 of an arc square, which is convenient for correcting the diopter of the prescription for refractive error of vision and simulating the visible area of a progressive lens.
[0026] As a technical optimization solution of the present invention, the micro lenses 3 are arranged in sequence and equidistantly on an arc square curve from the center to the outside inside the defocus area 6 .
[0027] In this embodiment: the microlenses 3 are arranged equidistantly on an arc square curve from the center to the outside inside the defocus area 6, so that the microlenses 3 are arranged between the two groups of lens monomers 2 to form the defocus area 6, so that the defocus area 6 has more light than the central prescription area 4, and a defocus plane is formed in front of the user's retina, which effectively inhibits the elongation of the eyeball and plays a role in preventing and controlling myopia.
[0028] As a technical optimization solution of the utility model, a first square ring 701 is provided at the central edge of the defocus area 6, a second square ring 702 is provided at the outer edge of the defocus area 6, and a plurality of arc square curves are adapted to be provided between the first square ring 701 and the second square ring 702; the microlenses 3 are gradually dispersed and arranged from the first square ring 701 to the second square ring 702, and the distance between adjacent microlenses 3 is 1.5 to 1.8 mm.
[0029] In this embodiment: a plurality of arc square curves are matched between the first square ring 701 and the second square ring 702, so that the microlenses 3 are gradually dispersed and arranged from the first square ring 701 to the second square ring 702, so that the microlenses 3 are attached between the two groups of lens monomers 2, and the microlenses 3 are convex lenses, and the convex light is added to reduce the defocus degree and reduce the irritating factors of myopia deepening, so that the external dense bionic honeycomb non-continuous defocus design provides the wearer with a defocus myopia prevention and control effect.
[0030] As a technical optimization solution of the utility model, the inner space of the arc square curve is bilaterally symmetrical about the optical center of the defocused lens, and the maximum height of the innermost arc square curve inner space is 13mm to 14mm, and the maximum width is 22mm to 23mm.
[0031] In the present embodiment, by setting the maximum height of the space within the innermost circular arc square curve to 13mm-14mm and the maximum width to 22mm-23mm, the vision correction effect when the eyeball is looking down or looking up and the vision correction effect when the eyeball is moving left and right are respectively met, which conforms to ergonomics, enhances the user experience, and improves the user's wearing comfort.
[0032] As a technical optimization solution of the present invention, the microlens 3 is arranged on the joint surface of the two groups of lens monomers 2, and the protrusion of the microlens 3 faces the lens monomer 2 with a lower refractive index.
[0033] In this embodiment, the protrusions of the microlenses 3 face the lens monomer 2 with a low refractive index, so that the light adding effects at various positions of the defocused area 6 remain roughly consistent, thereby improving the wearing comfort of the user.
[0034] When in use: the arc-square design of the central prescription area 4 allows the microlenses 3 to be arranged and distributed gradually and equidistantly from the inside to the outside, which can ensure the clarity of the wearer's field of vision. At the same time, the arc-square shape can also correct the diopter of the prescription used for visual ametropia, simulate the visual area of the progressive lens, and improve the wearing comfort. A plurality of arc-square curves are adapted to be arranged between the first square ring 701 and the second square ring 702, so that the microlenses 3 are gradually dispersed and arranged from the first square ring 701 to the second square ring 702, so that the microlenses 3 are attached between the two groups of lens monomers 2, and the microlenses 3 are convex lenses, and convex light is added to reduce the defocus degree; the microlenses 3 are arranged equidistantly on the arc-square curve from the center to the outside inside the defocus area 6, so that the microlenses 3 are arranged between the two groups of lens monomers 2 to form a defocus area 6, so that the defocus area 6 has more light added than the central prescription area 4, and a defocus plane is formed in front of the user's retina, which effectively inhibits the elongation of the eyeball.
[0035] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of various parts adopt the conventional means such as mature rivets and welding in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.
[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A defocus lens, comprising a lens body (1), characterized in that: The lens body (1) comprises two groups of lens monomers (2) bonded to each other, a plurality of micro lenses (3) are arranged on the inner side of the lens body (1), and the plurality of micro lenses (3) are located between the two groups of lens monomers (2). The lens body (1) is divided into a central prescription area (4) and a defocus area (6) from the center to the outer edge, the defocus area (6) being a discontinuous honeycomb bionic defocus refractive area, the plurality of micro lenses (3) being distributed inside the defocus area (6), the central prescription area (4) being in the shape of an arc square, and a group of arc square curves evenly arranged around the central prescription area (4) are provided in the defocus area (6).
2. The defocus lens according to claim 1, characterized in that: The circular arc square curve comprises a first arc line (501), a second arc line (502), a third arc line (503) and a fourth arc line (504) in sequence, and the first arc line (501), the second arc line (502), the third arc line (503) and the fourth arc line (504) all bulge toward the defocused area (6).
3. The defocus lens according to claim 1, characterized in that: The microlenses (3) are arranged in sequence and at equal distances from the center to the outside on an arc square curve inside the defocused area (6).
4. The defocus lens according to claim 1, characterized in that: A first square ring (701) is arranged at the central edge of the defocused area (6), a second square ring (702) is arranged at the outer edge of the defocused area (6), and a plurality of circular arc square curves are arranged in a matching manner between the first square ring (701) and the second square ring (702).
5. The defocus lens according to claim 4, characterized in that: The micro lenses (3) are gradually dispersed and arranged from the first square ring (701) to the second square ring (702), and the distance between adjacent micro lenses (3) is 1.5 to 1.8 mm.
6. The defocus lens according to claim 1, characterized in that: The inner space of the circular arc square curve is bilaterally symmetrical about the optical center of the defocused lens, and the maximum height of the innermost circular arc square curve inner space is 13 mm to 14 mm, and the maximum width is 22 mm to 23 mm.
7. The defocus lens according to claim 1, characterized in that: The microlens (3) is arranged on the joint surface of two groups of lens monomers (2), and the protrusion of the microlens (3) faces the lens monomer (2) with a lower refractive index.