CN115236879A - a lens system - Google Patents

Abstract

The invention discloses a lens system. The lens system is a set of lenses, including two or more lenses. The wearer uses day lenses during the day and night lenses at night. The first dioptric zone of the day lenses is 3‑6 mm in diameter, and the night lenses are characterized by a first dioptric zone of 5‑12 mm in diameter. The central area of the mirror is the diopter-stabilized light area, which is one diopter. The image in the central area is completely on the retina, and the peripheral area is two diopters or more. The first diopter is the same as the central area, and the second or third The diopter is realized by the change of the curvature R of the microlens or the lens, and the total diopter of the peripheral area is realized by the first diopter and the microlens, or is realized by the change of the curvature R of the lens. In the peripheral area, the imaged part of the visual object falls in front of the retina or all of it falls in front of the retina, which induces axial elongation and delays the increase of myopia.

Description

a lens system

technical field

The invention relates to the technical field of glasses, in particular to a lens system.

Background technique

Adolescence is a period of high incidence of myopia, which is closely related to the development of the human eyeball. The eye structure of minors is relatively unstable and is easily disturbed by foreign objects. High-intensity and close-range eye use is extremely detrimental to the eyes. If parents do not control it during this period, myopia will naturally occur.

The research and exploration of the treatment of myopia is still in progress. The research progress of various myopia occurrence and development mechanisms, such as accommodation theory, defocus theory and new research results at the molecular biological level of the eyeball, provide new insights into the treatment and prevention of myopia. ideas. The pupil size of each person varies with the environment and age. The setting of the central luminous area of the lens for retarding the development of myopia is designed according to the size of the pupil of the human eye. All current studies and literatures give all adolescents the lens for delaying the development of myopia, the size of the central power area is a fixed value, and the size of the human pupil varies greatly, from the smallest 1-2 mm to the largest about 10 mm, such a design Obviously, it cannot meet the individual needs of the wearer, so for all wearers, the control effect of myopia is also very different. At the same time, for different environments, especially the light environment, the pupil size of the wearer also changes greatly, and a pair of lenses cannot meet the needs of the pupil size change under different light.

In order to solve the shortcomings of the existing technology, people have carried out long-term exploration and proposed various solutions. For example, a Chinese patent document discloses an eccentric defocusing lens [201821948850.4], which includes an eccentric defocusing area, a peripheral defocusing area is set around the eccentric defocusing area, and the diopter gradually decreases in the direction away from the eccentric defocusing area. The perimeter of the focus lens is circularly curved, so that the upper half of the decentered defocus lens produces a first prism, the lower half produces a second prism, and the base of the first prism toward the second prism gradually increases.

The above solution solves the existing problems of relieving visual fatigue, reducing eye use at a fixed distance, and relaxing the ciliary muscle to a certain extent, but this solution still has many shortcomings, such as the problem of poor defocusing effect caused by eye movement and light changes. .

SUMMARY OF THE INVENTION

The object of the present invention is to provide a lens system in view of the above problems.

In order to achieve the above objects, the present invention adopts the following technical solutions: a lens system, the system includes at least two lenses, at least one of the lenses is a daytime lens for the wearer's daytime use, and at least one lens The lens is a night lens used by the wearer at night. Both the day lens and the night lens have a center area, and the diameter of the center area of the day lens and the center area of the night lens are different, and the center area of the night lens is different. The area is a diopter-stabilized optical area with the same diopter, and the peripheral area of the central area has at least two diopters in the circumferential direction. The total diopter of the area is achieved by the central area and the microlens together or by changing the curvature R of the lens. The system is equipped with at least two lenses, which can be worn in different light environments and according to each person's different light conditions.

In the above-mentioned lens system, the central area of the day lens and the night lens are both the first refractive area, and the diameter of the first refractive area of the day lens is 3-6 mm, The diameter of the first refractive region of the night lens is 5-12 mm. Through such a choice, the defocus amount of the lens can be kept to the maximum during the process of wearing the lens, so as to maximize the inhibitory effect on the development of myopia.

In the above-mentioned lens system, the central area of the day lens and the night lens is a circular structure or a quasi-circular structure.

In the above-mentioned lens system, the peripheral area of the daytime lens and the nighttime lens is the area of the lens except the central area.

In the above-mentioned lens system, the microlens diopter range of the lens is +0.00-+20.00D.

In the above-mentioned lens system, the variation of the R value of the peripheral region of the lens results in an increase in the diopter in the range of +0.00-+10.00D.

In the above-mentioned lens system, the R value of the lens curvature in the peripheral area is increased from 500 mm to 200 mm compared with the central area.

In the above-mentioned lens system, the raw material of the lens is a thermosetting resin, and its refractive index and Abbe number satisfy the conditions: refractive index 1.67 and Abbe number ≥ 30 or refractive index 1.60 and Abbe number ≥ 39 or refractive index 1.56 and Abbe number ≥ 38 or refractive index 1.50 and Abbe number ≥ 56.

In the above-mentioned lens system, the raw material of the lens is thermoplastic resin, the refractive index is greater than or equal to 1.58 and the Abbe number is greater than or equal to 30.

In the above-mentioned lens system, the diopter of the central area of the day lens and the night lens is -3.00D, and the diopter of the peripheral area of the day lens and the night lens is +1.00D or +1.75 D.

Compared with the prior art, the advantages of the present invention are:

According to each person, choose different lenses to wear under different light. This design ensures that the wearer can keep the maximum amount of defocusing of light passing through the lens during the use of the lens, so as to maximize the inhibitory effect on the development of myopia and induce the eye. Axis lengthening, delaying the increase of myopia in the eye, suitable for any myopic person, and better for teenagers.

Description of drawings

FIG. 1 is a schematic structural diagram of daytime glasses in the present invention.

FIG. 2 is a schematic structural diagram of night glasses in the present invention.

3 is a schematic view of the structure of the daytime lens of the present invention.

FIG. 4 is a schematic view of the structure of the night lens in the present invention.

Fig. 5 is the structural schematic diagram of the side of the lens in the present invention

In the figure: lens 1, day lens 11, night lens 12, central area 2, first refractive area 21, peripheral area 3.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1-5, a lens system includes at least two lenses 1, at least one lens 1 in the lens 1 is a daytime lens 11 used by a wearer during the day, and at least one lens 1 is used for wearing The night lens 12 used by the user at night, both the day lens 11 and the night lens 12 have a central area 2, and the diameter of the central area 2 of the day lens 11 and the central area 2 of the night lens 12 are different, and the central area 2 is the same diopter The diopter stabilization optical area, the peripheral area 3 with at least two diopters on the circumferential outer side of the central area 2, the diopter of the peripheral area 3 is realized by the change of the microlens or the curvature R of the lens, and the total diopter of the peripheral area 3 is obtained by the central area 2 and the lens. The microlenses are jointly realized or realized by changing the curvature R of the lens. The system is provided with at least two lenses 1, and different lenses 1 can be selected to be worn in different light environments and according to each person's different light conditions.

2 and 3, the central area 2 of the day lens 11 and the night lens 12 are both the first refractive area 21, and the diameter of the first refractive area 21 of the day lens 11 is 3-6 mm, The diameter of the first dioptric zone 21 of the night lens 12 is 5-12 mm. Through such selection, the defocus amount of the light of the lens 1 can be kept to the maximum during the wearing of the lens 1, so as to maximize the effect of inhibiting the development of myopia.

The central area 2 of the daytime lens 11 and the nighttime lens 12 is a circular structure or a quasi-circular structure.

Preferably, the peripheral area 3 of the day lens 11 and the night lens 12 is the area of the lens 1 other than the central area 2 .

Further, the microlens diopter range of the lens 1 is +0.00-+20.00D.

As shown in FIG. 4, the change in the R value of the peripheral region 3 of the lens 1 results in a diopter increase in the range +0.00-+10.00D.

Among them, the R value of the lens curvature in the peripheral area 3 is increased from 500 mm to 200 mm compared with the central area 2.

In depth, the raw material of the lens 1 is a thermosetting resin, and its refractive index and Abbe number satisfy the conditions: refractive index 1.67 and Abbe number ≥ 30 or refractive index 1.60 and Abbe number ≥ 39 or refractive index 1.56 and Abbe number ≥ 38 or Refractive index 1.50 and Abbe number ≥ 56.

Further, the raw material of the lens 1 is a thermoplastic resin, the refractive index is greater than or equal to 1.58 and the Abbe number is greater than or equal to 30.

2 and 3, the diopter of the central area 2 of the day lens 11 and the night lens 12 is -3.00D, and the diopter of the peripheral area 3 of the day lens 11 and the night lens 12 is +1.00D or +1.75D.

The specific plans are as follows:

Example 1

This embodiment provides a lens system. The lens system is a set of lenses, including two lenses, wherein the refractive index of the lenses is 1.60 and the Abbe number is 39. The wearer uses day mirrors during the day and night mirrors at night. The day lenses are characterized by a first dioptric zone diameter of 5 mm, and the night lenses are characterized by a first refractive zone diameter of 10 mm. The central area of the mirror is the diopter-stabilized optical area, which is one diopter, and the diopter is -3.00D; the peripheral area is the area other than the first diopter, and the peripheral area is two diopters. The first diopter and the central area have the same diopter, which is -3.00D, the second diopter is achieved by superimposing the microlens and the first diopter, wherein the microlens is +4.00D, and the second diopter in the peripheral area is +1.00D. The part of the visual image in the peripheral area falls on the retina in front of the retina, which induces the elongation of the eye axis and delays the increase of myopia. This lens is suitable for any nearsighted person, and the effect is better for juvenile myopic patients.

Example 2

This embodiment provides a lens system. The lens system is a set of lenses, including two lenses, wherein the refractive index of the lenses is 1.60 and the Abbe number is 39. The wearer uses day mirrors during the day and night mirrors at night. The day lens is characterized by a first dioptric zone diameter of 6 mm, and the night lens is characterized by a first refractive zone diameter of 8 mm. The central area of the mirror is the stable diopter area, which is one diopter, and the diopter is -3.00D; the peripheral area is the area other than the first diopter area, and the peripheral area is multiple diopters. The diopter is realized by the change of the lens curvature R. , the R value of the lens curvature in the peripheral area increased from 500 mm to 200 mm compared with the central area, and the second diopter in the peripheral area was +1.75D. The part of the visual image in the peripheral area falls on the retina in front of the retina, which induces the elongation of the eye axis and delays the increase of myopia. This lens is suitable for any nearsighted person, and the effect is better for juvenile myopic patients.

The principle of this embodiment is:

According to different pupil sizes, design different central area areas, the central area is circular or similar to a circle, and its diameter ranges from 3-12 mm, designed into two or more pairs of lenses, according to each person under different light, choose Wear different lenses. Then the light passing through the pupil, that is, the central area, can be clearly imaged on the retina, the peripheral area is imaged in front of the retina, and the visual image completely falls on the retina and behind the retina, which increases the stimulation of the peripheral light area to the back of the retina and delays the progression of myopia of the eye. Increase.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the described specific embodiments or substitute in similar manners, but will not deviate from the spirit of the present invention or go beyond the definitions of the appended claims range.

Although the terms such as lens 1, day lens 11, night lens 12, central area 2, first refractive area 21, peripheral area 3, etc. are frequently used herein, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; it is contrary to the spirit of the present invention to interpret them as any kind of additional limitation.

Claims (10)

Claims 1. A lens system, characterized in that the system comprises at least two lenses (1), and at least one pair of lenses (1) in the lenses (1) is a daytime lens (11) used by a wearer during the day ), at least one lens (1) is a night lens (12) for the wearer to use at night, said day lens (11) and night lens (12) both have a central area (2) and said day lens (12) The central area (2) of the night lens (11) and the central area (2) of the night lens (12) have different diameters, and the central area (2) is a diopter-stabilized light area of the same diopter, and the central area (2) The circumferential outer side of the region (2) has a peripheral region (3) with at least two diopters, the diopter of the peripheral region (3) is realized by changing the curvature R of the microlens or the lens, and the total of the peripheral region (3) is The diopter is achieved by the central area (2) and the microlens together or by changing the curvature R of the lens. 2. A lens system according to claim 1, characterized in that, the central area (2) of the daytime lens (11) and the nighttime lens (12) is the first refractive area (21), And the diameter of the first refractive area (21) of the daytime lens (11) is 3-6 mm, and the diameter of the first refractive area (21) of the night lens (12) is 5-12 mm mm. 3 . The lens system according to claim 1 , wherein the central regions ( 2 ) of the day lens ( 11 ) and the night lens ( 12 ) have a circular structure or a quasi-circular structure. 4 . 4. A lens system according to claim 1, characterized in that the peripheral area (3) of the daytime lens (11) and the nighttime lens (12) is the lens (1) except the central area (2) outside the area. 5. A lens system according to claim 1, characterized in that, the microlens diopter range of the lens (1) is +0.00-+20.00D. 6. A lens system according to claim 1, characterized in that, the change of the R value of the peripheral area (3) of the lens (1) results in a diopter increase in the range +0.00-+10.00D. 7. A lens system according to claim 1, characterized in that, the R value of the lens curvature in the peripheral area (3) and the central area (2) is increased from 500 mm to 200 mm. 8 . The lens system according to claim 1 , wherein the raw material of the lens (1) is a thermosetting resin, and its refractive index and Abbe number satisfy the conditions: the refractive index is 1.67 and the Abbe number is greater than or equal to 30 or Refractive index 1.60 and Abbe number ≥ 39 or Refractive index 1.56 and Abbe number ≥ 38 or Refractive index 1.50 and Abbe number ≥ 56. 9 . The lens system according to claim 1 , wherein the raw material of the lens ( 1 ) is thermoplastic resin, the refractive index is greater than or equal to 1.58 and the Abbe number is greater than or equal to 30. 10 . 10. A lens system according to claim 1, characterized in that, the diopter of the central area (2) of the day lens (11) and the night lens (12) is -3.00D, and the The diopter of the peripheral area (3) of the day lens (11) and night lens (12) is +1.00D or +1.75D.

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