CN212694190U

CN212694190U - Defocusing soft lens

Info

Publication number: CN212694190U
Application number: CN202020224740.4U
Authority: CN
Inventors: 李宪亭
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2021-03-12
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses a soft lens of defocus relates to the lens field, including optics district, from focus district, location district and peripheral tear exchange area, defocus district, location district and peripheral tear exchange area set up around optics district, and all are concentric circles. Wherein, the diopter of the out-of-focus area is gradually reduced in the process of extending outwards along the radial direction of the out-of-focus area, and gradually returns to the design of a normal contact lens after reaching a certain out-of-focus amount. The material of the lens is the same as that of the contact lens. The utility model relates to a soft contact lens of area from focal zone, the diopter from focal zone reduces for the diopter in optics district gradually, arrives certain out of focus volume after, returns to normal gradually again. Through setting up out of focus district, can make the utility model discloses a peripheral hyperopia out of focus formation of image of optics district is close to the retina, makes it form images to fall on the peripheral retina of retina macula lutea, or inside the retina to this trend that slows down the eye axis growth of people's eye, thereby the process that the near development of slow down axial nature looked patient's myopia degree deepening.

Description

Defocusing soft lens

Technical Field

The utility model relates to a technical field of lens particularly, indicates a soft lens of defocus.

Background

Myopia refers to the condition of adjusting and relaxing, in which parallel rays pass through the eye dioptric system and then focus on the retina, and is called myopia. Myopic eyes are also called short-sighted eyes because the eyes can only see near but not far. When the eye is at rest, parallel light from infinity refracts through the refractive system of the eye, and then the parallel light is gathered to be a focus in front of the retina, and an unclear image is formed on the retina, so that the distance vision is obviously reduced, but the near vision is normal.

Most of myopia of teenagers is axial myopia, also called true myopia (true myopia), because the anterior and posterior diameters (namely the axis of eyes) of the eyeballs are lengthened to exceed the normal average 24mm due to congenital or acquired factors (such as carelessness of eyes), so that after parallel light rays enter the eyeballs, the focus falls in front of the retina and clear imaging cannot be realized. Thus, to avoid further progression of myopia in teenagers, lengthening of the axis of the eye should be avoided as much as possible.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a defocusing soft lens to solve the problem that the existing contact lenses cannot prevent the increase of the eye axis of the user.

The utility model provides a technical scheme that its technical problem adopted is:

the soft out-of-focus lens comprises an optical area and an out-of-focus area, wherein the out-of-focus area is arranged around the optical area and is concentric with the optical area, the diopter of the out-of-focus area is gradually reduced in the process of extending outwards along the radial direction of the out-of-focus area, and the material of the optical area and the material of the out-of-focus area are the same as that of a contact lens.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the radius of the optical area is 1.5-3mm, and the end distance from the focal area is 0-3 mm.

Further, the radius of the optical zone is 2mm, and the end distance of the focusing zone is 1.5 mm.

Further, the defocus region has multiple segments extending radially and concentrically therealong.

Further, the out-of-focus area comprises a first out-of-focus section, a second out-of-focus section and a third out-of-focus section, and the end distances of the first out-of-focus section, the second out-of-focus section and the third out-of-focus section are all 0.5 mm.

Further, the device also comprises a first reversing section and a second reversing section which are arranged along the focal distance area and extend along the center of the focal distance area in the radial direction, and the sum of the end distances of the first reversing section and the second reversing section is 0.75 mm.

Further, the variation range of diopter of the first defocus section is 0-3D, the variation range of diopter of the second defocus section is 0.5-6D, the variation range of diopter of the third defocus section is 2-20D, the lowest diopter of the first defocus section is the same as the highest diopter of the second defocus section, and the lowest diopter of the second defocus section is the same as the highest diopter of the third defocus section.

Further, the diopter change of first out of focus section is 0.75D, the diopter change of second out of focus section is 2.25D, the diopter change of third out of focus section is 4D, the diopter change of first reversal section is 3D, the diopter change of second reversal section is 4D.

Furthermore, the diameter of the defocused soft lens is 14.2-15 mm.

Furthermore, the device also comprises a positioning area and a tear exchange area which are concentric with the defocusing area and sequentially extend along the radial direction of the defocusing area, wherein the end distance of the positioning area is 2mm, the end distance of the tear exchange area is 1mm, and the angle of the tear exchange area is 4-6 degrees.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

the utility model relates to a take contact lens from focal zone, the diopter from focal zone reduces for the diopter in optics district gradually, can make from focal zone through setting up the utility model discloses the formation of image at edge can be close to the retina, slows down the trend that the eye axis of people's eye increases to slow down the process that myope's myopia degree deepens.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the present invention;

fig. 2 is the schematic diagram of the out-of-focus area of the present invention.

Wherein the figures include the following reference numerals: 100-optical zone, 200-out-of-focus zone, 210-first out-of-focus segment, 220-second out-of-focus segment, 230-third out-of-focus segment, 240-first reversal segment, 250-second reversal segment, 300-positioning zone, 400-tear exchange zone.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are merely exemplary of the invention and are not intended to be exhaustive. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1:

the utility model provides a soft lens out of focus, as shown in fig. 1-2, including optics district 100 and from focal area 200, optics district 100 and from focal area 200 are made by soft material, and foretell soft material is the material that is used for making contact lens commonly, consequently the utility model discloses a contact lens with from focal area 200, from focal area 200 around optics district 100 setting and both concentric, optics district 100 and from focal area 200 be lug connection promptly, optics district 100's effect is the same with ordinary contact lens is used for correcting eyesight, reduces gradually along its radial in-process diopter that outwards extends from focal area 200, can make through setting up from focal area 200 the utility model discloses the formation of image at edge is close to the retina to slow down the trend that myope's eye axis increases, and then slow down the trend of myope's myopia deepening.

In order to make the utility model more suitable for being worn by myopia patients, the radius of the optical zone 100 is 1.5-3mm, the distance from the focal zone 200 is 0-3mm, since the distance from the focal zone 200 is ring-shaped, the distance from the inner ring to the outer ring of the focal zone 200 is the above-mentioned distance, in this embodiment, the radius of the optical zone 100 is 2mm, and the distance from the focal zone 200 is 1.5 mm.

Because the utility model discloses a material is the same with contact lens's material, consequently the processing degree of difficulty increases, and in order to reduce the processing degree of difficulty, the mechanism that the burnt district 200 adopted is for including along its radial extension and endocentric multistage, also can the multistage processing at the in-process of processing like this, avoids a processing volume too big to machining precision has been guaranteed. In the present embodiment, as a preferable scheme, the out-of-focus area 200 has three segments in total, and specifically includes a first out-of-focus segment 210, a second out-of-focus segment 220, and a third out-of-focus segment 230, where the first out-of-focus segment 210, the second out-of-focus segment 220, and the third out-of-focus segment 230 are all annular, and their end distances are all 0.5 mm.

Since the diopter of the out-of-focus zone 200 is gradually reduced, the diopter of the above-mentioned first out-of-focus segment 210, second out-of-focus segment 220 and third out-of-focus segment 230 is also gradually reduced, the diopter of the first out-of-focus segment 210 ranges from 0D to 3D, the diopter of the second out-of-focus segment 220 ranges from 0.5D to 6D, and the diopter of the third out-of-focus segment 230 ranges from 2D to 20D, taking the first out-of-focus segment 210 as an example, the diopter range of 0D to 3D means that the diopter of the first out-of-focus segment 210 is gradually reduced on the basis of the diopter of the optical zone 100, assuming that the diopter of the optical zone 100 is a, the range value of the minimum diopter of the first out-of-focus segment 210 is between a and a-3D, the diopter of the first out-of-focus segment 210 is gradually reduced from the diopter of the optical zone 100, accordingly, the minimum diopter of the second out-of-focus segment 220 ranges from a-0.5D to a-6D, and the minimum diopter of the third out-of-focus segment 230 ranges from a-2D to a-20D, but it should be noted that the minimum diopter of the first out-of-focus segment 210 is the same as the maximum diopter of the second out-of-focus segment 220, and the minimum diopter of the second out-of-focus segment 220 is the same as the maximum diopter of the third out-of-focus segment 230, so that the first out-of-focus segment 210, the second out-of-focus segment 220, and the third out-of-focus segment 230 can be continuously transited.

In the present embodiment, a first reversal section 240 and a second reversal section 250 are further connected to the periphery of the third defocus section 230, and are disposed concentrically and extending along the radial direction of the defocus region 200, the sum of the distances between the ends of the first reversal section 240 and the second reversal section 250 is 0.75mm, specifically, the distance between the ends of the first reversal section 240 is 0.5mm, the distance between the ends of the second reversal section is 0.25mm, preferably, the diopter variation of the first defocus section 210 is 0.75D, the diopter variation of the second defocus section 220 is 2.25D, the diopter variation of the third reversal section 230 is 4D, the diopter variation of the first reversal section 240 is 3D, the diopter variation of the second reversal section 250 is 4D, that is, the lowest diopter of the first defocus section 210 is the defocus area 100 minus diopter 0.75D, the variation of the second section 220 is the lowest diopter minus 2.25D of the first defocus section 210, and the third section 230 is, The diopter change amounts of the first and second

reversal sections

240 and 250 are analogized in turn. The refractive index change rate of each section is small, and the processing is convenient, so that the production cost can be saved.

In this embodiment, the positioning region 300 and the tear exchange region 400 are disposed concentrically with the outer periphery of the defocus region 200 and extend in the radial direction of the defocus region 200, and in the case where the first reversal section 240 and the second reversal section 250 are disposed on the outer periphery of the defocus region 200, the positioning region 300 and the tear exchange region 400 are disposed on the outer periphery of the second reversal section 250, the diameter of the defocus soft lens after the positioning region 300 and the tear exchange region 400 are disposed ranges from 14.2 mm to 15mm, specifically, the end distance of the positioning region 300 is 2mm, the end distance of the tear exchange region 400 is 1mm, and the angle of the tear exchange region 400 is 4 to 6 degrees.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

Claims

1. An out-of-focus soft lens, comprising an optical zone (100) and an out-of-focus zone (200), wherein the out-of-focus zone (200) is disposed around the optical zone (100) and is concentric with the optical zone, the diopter of the out-of-focus zone (200) gradually decreases along the radial direction of the out-of-focus zone, the optical zone (100) and the out-of-focus zone (200) are made of the same material as that of a contact lens, the out-of-focus zone (200) has a plurality of segments extending radially and concentrically along the off-focus zone, the out-of-focus zone (200) comprises a first out-of-focus segment (210), a second out-of-focus segment (220) and a third out-of-focus segment (230), the distances between the ends of the first out-of-focus segment (210), the second out-of focus segment (220) and the third out-of-focus segment (230) are all 0.5mm, the diopter of the first out-of focus segment (210) ranges from 0 to 3D, and the, the diopter of the third out-of-focus segment (230) varies in a range of 2-20D, the lowest diopter of the first out-of-focus segment (210) is the same as the highest diopter of the second out-of-focus segment (220), and the lowest diopter of the second out-of-focus segment (220) is the same as the highest diopter of the third out-of-focus segment (230).

2. The soft, defocused mirror according to claim 1, wherein the radius of the optical zone (100) is 1.5-3mm, and the end distance from the focal zone (200) is 0-3 mm.

3. The soft, defocused lens according to claim 2, wherein the radius of the optical zone (100) is 2mm, and the end distance of the out-of-focus zone (200) is 1.5 mm.

4. The defocused soft lens of claim 1, further comprising a first reversal section (240) and a second reversal section (250) disposed along said defocused area (200) and extending radially along the center thereof, wherein the sum of the distances between the ends of said first reversal section (240) and said second reversal section (250) is 0.75 mm.

5. The soft, out-of-focus lens of claim 4, wherein the diopter change amount of the first out-of-focus segment (210) is 0.75 diopter, the diopter change amount of the second out-of-focus segment (220) is 2.25 diopter, the diopter change amount of the third out-of-focus segment (230) is 4 diopter, the diopter change amount of the first reversal segment (240) is 3 diopter, and the diopter change amount of the second reversal segment (250) is 4 diopter.

6. The soft, defocused lens according to claim 1, wherein the diameter of the soft, defocused lens is 14.2-15 mm.

7. The soft, defocused lens according to claim 1, further comprising a positioning region (300) and a tear exchange region (400) concentric with and sequentially extending along a radial direction of the focusing region (200), wherein the distance between ends of the positioning region (300) is 2mm, the distance between ends of the tear exchange region (400) is 1mm, and the angle of the tear exchange region (400) is 4-6 degrees.