CN215813588U

CN215813588U - Forward defocusing prism and transparent combined lens for preventing and controlling progressive myopia and distance

Info

Publication number: CN215813588U
Application number: CN202121870854.7U
Authority: CN
Inventors: 徐向阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-11
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses a forward defocusing prism and transparent combined lens for preventing and controlling progressive myopia and distance, which comprises: the lens comprises a defocusing lens sheet, wherein an out-of-focus area is formed in the upper half part of the inner side of the defocusing lens sheet, the out-of-focus area is an annular area formed by a plurality of concentric circles, a prism lens combination is formed in the lower half part of the defocusing lens sheet, a substrate and a base top are formed in the prism lens combination, a far light area of the lens is the defocusing lens sheet, a near light area of the lens is the prism and lens combined lens, and the prism and lens combined lens is a prism and lens combined body. The lens part of the far-use area and the lens part of the near-use area are integrated, the annular areas arranged in a plurality of concentric circles in the far-use area are out-of-focus areas, the out-of-focus areas are positioned on the upper half part of the inner side surface of the whole lens, and the cutting surface of the prism combination is positioned on the outer side surface of the whole lens, so that the injury of children and teenagers caused by the fact that the cutting surface of the prism lens faces the eyes when the children and the teenagers wear glasses to participate in physical exercise is avoided.

Description

Forward defocusing prism and transparent combined lens for preventing and controlling progressive myopia and distance

Technical Field

The utility model relates to the technical field of lenses, in particular to a forward defocusing prism and lens combination for preventing and controlling progressive myopia and distance.

Background

In 2018, the education department, Weijian Commission and other eight departments jointly issue a comprehensive prevention and control implementation scheme for the myopia of children and teenagers, and by 2023, the aim is to reduce the total myopia rate of the children and teenagers in the whole country by more than 0.5 percent per year on the basis of 2018, and reduce the myopia high-rate province by more than 1 percent per year. By 2030, the myopia rate of the new teenagers is obviously reduced, the overall level of the eyesight health is obviously improved, the myopia rate of the children at the age of 6 is controlled to be about 3%, the myopia rate of the pupils is reduced to be below 38%, the myopia rate of the junior and middle school students is reduced to be below 60%, and the myopia rate of the students at the high and middle stages is reduced to be below 70%.

The monitoring result of the national health administration in 2019 shows that the total myopia rate of the children and teenagers in the whole country in 2018 is 53.6%. Wherein, the primary school students account for 36.0 percent, the junior middle school students account for 71.6 percent and the senior middle school students account for 81.0 percent. Meanwhile, the myopia problem at low age is prominent.

The myopia management white paper (2019) is characterized in that the crowd with the myopia progress speed and the progress amount more than or equal to 0.75D/year is called progressive myopia, the progressive myopia proportion of children and teenagers myopia patients in China is very high, the eyesight health of the children and the teenagers is protected, and the occurrence and the development of myopia prevention are very urgent!

According to the characteristics of learning and living of children and teenagers, the existing single-focus lens can only enable a myopia patient of the children and the teenagers to clearly see a far blackboard, and when a user sees a near book, because the edge degree of the single-focus lens is higher than the degree of the central point, the adjustment amount and the integration amount of the single-focus lens can stimulate the eyes to see the near book are increased, so that the myopia degree is continuously deepened when the user reads and writes for a long time!

The existing single out-of-focus lens or single focus lens can only reduce the adjustment amount of eyes when seeing far and near, can not reduce the pressure generated by the extraocular muscle to the eyeball wall when seeing near, and can not effectively relieve the deepening of progressive myopia.

The existing progressive multi-focus lens can only reduce the adjusting force of a child or an adolescent from a blackboard for watching far to a book for watching near by setting the ADD value of the lens, cannot reduce the pressure generated by the inner part of the extraocular muscle to the eyeball wall when watching near, and meanwhile, most of myopia patients of the child or the adolescent are accompanied by outer canting and are not suitable for the existing progressive multi-focus lens, so the single progressive multi-focus lens has poor prevention and control effect on progressive myopia.

Meanwhile, the existing single prism and lens combined lens can reduce the pressure of regulating power and extraocular muscles on the eyeball wall when seeing near, but can only be used for seeing near, the lens cannot clearly see characters on a blackboard, a pair of glasses for seeing far needs to be combined, most of children and teenagers with myopia patients are students, and the wearing of the glasses in the life and learning process is inconvenient and affects the wearing effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a forward defocusing prism and transmission combined lens for preventing and controlling progressive myopia and distance so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a forward defocusing prism combined lens for preventing and controlling progressive myopia and distance comprises: the defocusing lens sheet is characterized in that a defocusing area is formed in the upper half part of the inner side of the defocusing lens sheet, the defocusing area is an annular area formed by a plurality of concentric circles, a prism lens combination is formed in the lower half part of the defocusing lens sheet, a substrate and a base top are formed in the prism lens combination, the thickness of the prism lens combination is gradually reduced along the direction from the substrate to the base top, and the cutting surface of the prism lens combination is located on the outer side surface of the defocusing lens sheet.

Furthermore, the inner surface of the prism lens combination and the inner surface of the defocused lens sheet are integrated, and the outer surface of the prism lens combination and the defocused lens sheet are butted into a whole along the horizontal diameter direction.

Further, the prism degree of the prism and lens combination is 2.75-3.25.

Furthermore, the lens of the prism-lens combination is any one of a concave lens, a convex lens or a plano-optic lens.

Furthermore, the upper half part of the defocusing lens is any one of a defocusing concave lens or a defocusing plano-optic lens.

Further, the shape of the prism lens combination is any one of an ellipse, a circle, an arc and a semicircle.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, through the defocusing lens, the prism lens combination and the multi-point focusing area, when the forward defocusing prism and transmission combined lens for preventing and controlling progressive myopia and distance dual-purpose is used, the distance light area of the lens is the defocusing lens, the near light area is the prism and transmission combined lens, and the prism and transmission combination is a combination of a prism and a lens. The lens part of far away with regional and near with regional is a whole, and the annular region that a plurality of concentric circles form in far away were arranged is out of focus district, and out of focus position is in the first half of the medial surface of whole lens, and the cutting plane that the arris was passed through the combination lies in the lateral surface of whole lens, to in the school age children teenagers, such design is compared and is located the medial surface safer, has avoided children teenagers when wearing glasses to participate in the physical training, and the injury that the cutting face of arris lens caused the eye.

Drawings

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic overall structure diagram according to a second embodiment of the present invention;

FIG. 5 is a schematic view of the overall structure of the second embodiment of the present invention;

FIG. 6 is a schematic view of the overall structure of the second embodiment of the present invention;

FIG. 7 is a schematic view of the overall structure of the second embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view taken at E-E of FIG. 7 in accordance with the present invention;

FIG. 9 is a schematic cross-sectional view at F-F of FIG. 7 according to the present invention.

In the figure: 1-a defocusing lens sheet; 2-prism lens combination; 3-a superstrate; 4-a substrate; 5-multiple point out-of-focus zone.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows: referring to fig. 1-3, the present invention provides a technical solution: a forward defocusing prism combined lens for preventing and controlling progressive myopia and distance comprises: the defocusing lens sheet 1 is characterized in that a defocusing area 5 is formed in the upper half part of the inner side of the defocusing lens sheet 1, the defocusing area 5 is an annular area formed by a plurality of concentric circles, a prism lens combination 2 is formed in the lower half part of the defocusing lens sheet 1, the prism lens combination 2 is formed by a substrate 4 and a base top 3, the thickness of the prism lens combination 2 is gradually reduced from the substrate 4 to the base top 3, and a cutting surface of the prism lens combination is located on the outer side surface of the defocusing lens sheet 1.

The inner surface of the edge lens combination 2 and the inner surface of the defocused lens sheet 1 are integrated, the outer surface of the edge lens combination 2 and the defocused lens sheet 1 are butted into a whole along the horizontal diameter direction, and the prism degree of the edge lens combination 2 is 2.75-3.25.

The lenses of the prism lens combination 2 are any one of concave lenses, convex lenses or plano lenses, the upper half part of the defocusing lens sheet 1 is any one of the defocusing concave lenses or the defocusing plano lenses, and the shape of the prism lens combination 2 is semicircular.

The lens can achieve the effects of preventing progressive myopia from continuously developing and delaying the axial lengthening of the eye and the axial myopia from continuously developing, wherein the upper half part of the defocusing lens sheet 1 is a defocusing concave lens or a defocusing plano-optic lens, and a plurality of annular multipoint defocusing areas 5 which are arranged in a concentric circle shape are distributed on the inner side surface of the upper half part of the defocusing lens sheet 1 as shown in the figures 2 and 3. The whole lens is a resin lens with the refractive index of 1.499-1.74. Light rays are imaged in the central area (yellow spot area) of the retina through the far-distance optical center area of the upper half part of the defocusing lens sheet 1, the light rays are imaged in front of the peripheral area of the retina through the multi-point focusing area 5, myopia defocusing is formed, focus-following growth of eyeballs is blocked, and signals of continuous deepening of myopia are blocked. Thereby controlling the elongation of the axis of the eye and relieving the deepening of the myopic degree.

As can be seen from fig. 1-3, the lower half (lower semicircle) of the outer side surface of the multi-point out-of-focus area 1 is provided with a prism lens combination 2 of prism and lens, the prism lens combination 2 is partially semicircular, and the upper edge of the prism lens combination 2 is a straight line, and is connected with and coincided with the multi-point out-of-focus area 5 of the upper half of the out-of-focus lens sheet 1 at the 180-degree horizontal diameter position of the whole lens, the lower edge of the prism lens combination 2 is coincided with the lower edge of the out-of-focus lens sheet 1, when reading and writing through the lower half of the whole product, a complete image can be formed.

In the production process, the lenses in the prism lens combination 2 and the multi-point focusing area 5 at the upper half part of the defocusing lens sheet 1 are combined into a mold A, the prism part of the prism lens combination 2 is a mold B, and the mold A and the mold B are molded at one time by adopting a one-time molding pouring technology in the production process. And (3) forming a substrate of the product of the patent after demolding, and then carrying out subsequent processing technologies such as drying, hardening, polishing, coating and the like, and detecting, optimizing and processing to form a defocused edge-transmitting combined lens product.

As can be seen from figure 1, the prism combination 2 is positioned below the optical center of a multi-point out-of-focus area 5 of the out-of-focus lens sheet 1, the inner surface of the prism combination 2 and the annular out-of-focus area 5 form the inner surface of the whole lens, the outer surface of the prism combination 2 is an inward concave surface or an outward convex surface, slight myopia uses an inward concave surface, high myopia uses an outward convex surface, the upper edge of the prism combination 2 part extends from inside to outside along the 180-degree horizontal diameter of the whole lens to form a base top 3 and a substrate 4, the base top 3 is thinly positioned at the outer side of the lens, the substrate 4 is thickly positioned at the inner side of the lens, the thickness of the base top 3 is gradually reduced from the substrate 4 to the base top 3 to be smoothly connected with the out-of-focus lens sheet 1 part, in use, the left base top 3 is level left, and the substrate 4 is level to the right. In the lens structure, light rays penetrate through the prism lens combination 2 and can be displaced from the substrate 4 to the base top 3, the light rays emitted by a near object are changed into relatively parallel light rays, the focal point is projected to the central area (macular area) of retina through the dioptric system of the whole eyeball, so that the compression of extraocular muscles to the eyeball wall is reduced, the convergence capacity is complemented, and meanwhile, the lenses in the prism lens combination 2 can relieve the tension of ciliary muscles when the near object is seen, and the occurrence and development of accommodation lag are prevented. After the upper half part of the defocusing lens sheet 1 is compounded with the multipoint defocusing area 5 (a ring-focus concave lens or a single-focus concave lens), the lens (a convex lens, a plano lens or a concave lens) and the triple prism, the excessive lengthening of an eye axis can be effectively inhibited, the adjustment lag is inhibited, and the visual function is reconstructed.

Example two: referring to fig. 4-9, the present invention provides a technical solution: a forward defocusing prism combined lens for preventing and controlling progressive myopia and distance comprises: the defocusing lens sheet 1 is characterized in that a defocusing area 5 is formed in the upper half part of the inner side of the defocusing lens sheet 1, the defocusing area 5 is an annular area formed by a plurality of concentric circles, a prism lens combination 2 is formed in the lower half part of the defocusing lens sheet 1, the prism lens combination 2 is formed by a substrate 4 and a base top 3, the thickness of the prism lens combination 2 is gradually reduced from the substrate 4 to the base top 3, and a cutting surface of the prism lens combination is located on the outer side surface of the defocusing lens sheet 1.

The inner surface of the edge lens combination 2 and the inner surface of the defocused lens sheet 1 are integrated, the outer surface of the edge lens combination 2 and the defocused lens sheet 1 are butted into a whole along the horizontal diameter direction, and the prism degree of the edge lens combination 2 is 2.75-3.25. The lenses of the prism lens combination 2 are any one of concave lenses, convex lenses or plano-lenses, and the upper half part of the defocusing lens sheet 1 is any one of the defocusing concave lenses or the defocusing plano-lenses.

The prism lens combination 2 is in an oval shape, a circular shape or an arc shape.

The working principle is as follows: when the forward defocusing edge-transmitting combined lens for preventing and controlling progressive myopia and distance is used, a distance light area of the lens is a defocusing lens sheet 1, a near light area of the lens is an edge-transmitting combined lens, and the edge-transmitting combination is a combination of a prism and a lens. The lens part of far away with regional and near with regional is a whole, and the annular region that a plurality of concentric circles form in far away were arranged is out of focus district, and out of focus position is in the first half of the medial surface of whole lens, and the cutting plane that the arris was passed through the combination lies in the lateral surface of whole lens, to in the school age children teenagers, such design is compared and is located the medial surface safer, has avoided children teenagers when wearing glasses to participate in the physical training, and the injury that the cutting face of arris lens caused the eye.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent and control dual-purpose forward out of focus arris of progressive myopia distance and pass through combination lens which characterized in that includes:

defocusing lens sheet (1), the half is constructed on defocusing lens sheet (1) inboard and is had out of focus district (5), out of focus district (5) is the annular region that a plurality of concentric circles are constituteed, defocusing lens sheet (1) lower half is constructed and has prism lens combination (2), prism lens combination (2) are constructed and are had basement (4) and capital (3), prism lens combination (2) are followed basement (4) and are progressively reduced to capital (3) direction thickness, the cutting plane of prism lens combination is located the lateral surface of defocusing lens sheet (1).

2. The forward defocused prism combined lens for preventing and controlling progressive myopia and near-distance according to claim 1, wherein: the inner surface of the edge lens combination (2) and the inner surface of the defocusing lens sheet (1) are integrated, and the outer surface of the edge lens combination (2) and the defocusing lens sheet (1) are butted into a whole along the horizontal diameter direction.

3. The forward defocused prism combined lens for preventing and controlling progressive myopia and near-distance according to claim 1, wherein: the prism degree of the prism and lens combination (2) is 2.75-3.25 prism degrees.

4. The forward defocused prism combined lens for preventing and controlling progressive myopia and near-distance according to claim 1, wherein: the lenses of the prism lens combination (2) are any one of concave lenses, convex lenses or plano-lenses.

5. The forward defocused prism combined lens for preventing and controlling progressive myopia and near-distance according to claim 1, wherein: the upper half part of the defocusing lens sheet (1) is any one of a defocusing concave lens or a defocusing plano-optic lens.

6. The forward defocused prism combined lens for preventing and controlling progressive myopia and near-distance according to claim 1, wherein: the shape of the prism lens combination (2) is any one of an ellipse, a circle, an arc or a semicircle.