CN110554516B

CN110554516B - Lens using star shaped clear zone to increase defocused image range

Info

Publication number: CN110554516B
Application number: CN201810552428.5A
Authority: CN
Inventors: 吴怡璁
Original assignee: Brighten Optix Corp
Current assignee: Brighten Optix Corp
Priority date: 2018-05-31
Filing date: 2018-05-31
Publication date: 2021-04-30
Anticipated expiration: 2038-05-31
Also published as: CN110554516A

Abstract

The invention relates to a lens for increasing defocused image range by using star-shaped clear area, the surface of the lens is formed with a central optical area for light to pass through to form an image on the central clear image area of the retina of an eyeball, and the periphery of the central optical area is surrounded with a peripheral optical area on the peripheral defocused image area around the central clear image area, wherein the surface of the central optical area is provided with a clear area which is in a star shape and for light to pass through to form an image on the central clear image area clearly, and the part outside the clear area is formed with an defocused area, namely, the defocused image range formed in the central clear image area can be increased by using the defocused area to improve the range of the optical area with defocusing function on the retina, so that the function of controlling myopic degree can exist on the premise of not increasing the defocused degree of the lens, therefore, when the light passes through the defocused area, the light is focused in front of the retina, so as to effectively delay or prevent the myopic deviation degree from increasing.

Description

Lens using star shaped clear zone to increase defocused image range

Technical Field

The invention relates to a lens for increasing defocused image range by using a star-shaped clear area, in particular to a lens, wherein the surface of a central optical area of the lens is provided with a clear area which enables light to pass through the clear area clearly imaged on the central clear image area of retina, and an defocus area for increasing the defocused image range in the central clear image area is formed at the position outside the clear area so as to delay the myopic degree from being deepened by the defocus area.

Background

Recently, in order to solve the problem of myopia, most people wear myopia glasses, myopia contact lenses, corneal myopia surgery or corneal remodelling lens correction, however, in order to effectively control the increase of the myopia degree, some manufacturers have developed peripheral defocus lenses, which mainly decrease the diopter (diopter) from the center to the periphery so that the central focus falls on the retina and the peripheral focus falls in front of the retina when light passes through the lens, thereby reducing the peripheral hyperopia defocus, controlling the over-lengthening of the eye axis, and further slowing the myopia progression speed and effectively controlling the peripheral vision correction.

However, the initial wearing of the peripheral defocus lens requires a short adaptation period, and if the peripheral diopter is reduced too much, the defocus degree is too much, which affects the vision of the central vision, so that the wearing comfort and even the safety of the wearer are affected due to the dizziness which is likely to occur when the wearer wears the peripheral defocus lens for a long time.

Therefore, how to try to solve the above-mentioned shortcomings and inconveniences of the prior art is a direction in which those skilled in the art are keenly interested to research and improve.

Disclosure of Invention

The main objective of the present invention is to form a central optical area on the surface of the lens for light to pass through for imaging on the central clear image area of the retina of the eyeball, and a peripheral optical area around the central optical area for imaging on the peripheral defocus image area around the central clear image area, wherein the surface of the central optical area of the lens is provided with a clear area in a star shape for light to pass through for clear imaging on the central clear image area, and the parts outside the clear area are formed with defocus areas for defocusing imaging in the central clear image area, so that the defocus areas can be used to increase the overall defocusing image range, thereby effectively utilizing the original space of the central optical area to increase the defocusing image range on the retina of the eyeball, and the star-shaped clear area is used to ensure that the eyeball can maintain clear vision when moving in the horizontal and vertical directions when the wearer reads, the oblique part is less used during reading, so that the range of defocused images is increased, the range of an optical area with a defocusing effect on the retina is increased, the function of controlling the myopic degree still exists on the premise of not increasing the defocusing degree of the lens, light rays are focused in front of the retina after passing through a defocusing area, and therefore ciliary muscles can relax to flatten the crystalline, ciliary muscles of eyeballs are relaxed through the defocusing area, the ciliary muscles of the eyeballs are prevented from being in a tight and cramped state for a long time, the elongation of the axis of the eyes is prevented, the increase of the myopic deviation degree is effectively delayed or prevented, and the purpose of correcting and improving myopia is achieved.

The secondary objective of the present invention is to provide a lens with a plurality of convex portions, wherein the corners of the ends of the convex portions are arc-shaped, so that when the lens is worn on an eyeball, the lens wearer does not feel a sharp foreign body sensation through the arc-shaped corners, thereby achieving the purpose of improving the comfort level of wearing.

Drawings

Fig. 1 is a schematic plan view of the present invention.

Fig. 2 is a schematic diagram of the optical path of the present invention.

Fig. 3 is a schematic view of an image of a retina according to the present invention.

List of reference numerals: 1-a lens; 11-outer surface; 12-an inner surface; 13-a central optical zone; 131-clear area; 1311-protrusions; 1312-corners; 132-a defocus region; 14-a peripheral optical zone; 15-a positioning part; 2-eyeball; 21-the retina; 211-central sharp image area; 2111 — clear image; 2112 — second defocused image; 212-peripheral out-of-focus image area; 2121-first defocused image; 22-pupil; 23-the ciliary muscle; 24-crystalline.

Detailed Description

Referring to fig. 1, 2 and 3, a lens 1 (which may be a contact lens 1 or a frame lens 1) of the present invention includes an outer surface 11 and an inner surface 12, and a central optical zone 13 formed on the outer surface 11 and the inner surface 12 for light to pass through to form a clear image area 211 [ i.e. a central fovea maculata (fovea) ] of a retina 21 of an eyeball 2 for light to image on the retina 21, wherein the surface of the central optical zone 13 is provided with a clear zone 131 having a star shape, the clear zone 131 having the star shape has a plurality of protrusions 1311 extending to the periphery of the central optical zone 13 in vertical and horizontal directions, and a corner 1312 having a circular arc shape is formed at the end of the protrusion 1311 to make the clear zone 131 have a cross-like shape by the plurality of protrusions 1311, and the central zone 13 is formed with a defocus area 132 outside the clear zone 131, and a peripheral defocus area 212 [ i.e. a central fovea maculata ] around which surrounds the clear image area 211 A peripheral optical zone 14 in the foveal fovea (parafovea) of the peripheral part, and a positioning part 15 for preventing the rotation of the lens 1 is provided on the surface of the lens 1.

The clear area 131 and the defocus area 132 of the central optical area 13 are preferably formed on the outer surface 11 of the lens 1, but in practice, the lens 1 may have the clear area 131 and the defocus area 132 formed on the inner surface 12, or both the clear area 131 and the defocus area 132 formed on the outer surface 11 and the inner surface 12.

Furthermore, the clear area 131 of the central optical area 13 has a plurality of convex portions 1311 extending in vertical and horizontal directions, i.e. the clear area 131 is in a cross-star shape, i.e. the plurality of convex portions 1311 can be used to form a clear visual image on the retina 21 when the pupil 22 of the eyeball 2 is viewed and browsed in vertical or horizontal directions, i.e. the requirement of the wearer for a clear visual image can be ensured by the plurality of convex portions 1311 of the clear area 131 (e.g. in the case of reading, the eyeball 2 needs to browse the text in horizontal or vertical directions, and the requirement of the wearer can be met by the plurality of convex portions 1311), and the part of the wearer which does not need to use a clear visual image can be used as the defocus area 132 of the central optical area 13 (e.g. the part inclined in the case of reading is less used, and can be used as the defocus area 132 to increase the defocus image range of the eyeball), and the position formed by the defocus area 132 of the central optical area 13 is 2 when the wearer is viewed in an inclined direction, the pupil 22 of the eyeball 2 corresponds to the position on the lens 1.

However, the refractive powers of the defocus area 132 of the central optical area 13 and the peripheral optical area 14 are smaller than the refractive power of the clear area 131 of the central optical area 13, so that the lens 1 can have a peripheral defocus function, and the refractive power of the defocus area 132 is preferably equal to the refractive power of the peripheral optical area 14.

In addition, if the lens 1 is a contact lens type, the positioning portion 15 of the lens 1 can be preferably disposed at the periphery of the inner surface 12, so as to avoid affecting the disposition of the central optical zone 13 and the peripheral optical zone 14, and further facilitate the processing and forming of the central optical zone 13 and the peripheral optical zone 14, but in practical applications, the positioning portion 15 can also be disposed at the outer surface 11 of the lens 1, or disposed at both the outer surface 11 and the inner surface 12; the design of the positioning portion 15 is to thin the upper and lower edges of the inner surface 12 to form a limiting groove (not shown) on the upper and lower edges, respectively, so that the lens 1 can be stably fixed on the eyeball 2 through a plurality of limiting grooves and can be prevented from rotating, however, the structure of the lens 1 on the eyeball 2 is very numerous, so the structure capable of achieving the aforementioned effects is covered by the present invention, and such simple modification and equivalent structural changes are included in the patent scope of the present invention in the same way and are well shown; if the lens 1 is of a spectacle frame type, the positioning portion 15 can be a frame for being worn and positioned on the face.

When the present invention is actually used, the lens 1 can be worn on the eyeball 2, and the positioning portion 15 is used to position on the eyeball 2, so as to prevent the lens 1 from easily rotating on the eyeball 2, and when the light passes through the central optical area 13 and the peripheral optical area 14 of the lens 1, light rays passing through peripheral optical zone 14 image a first defocused image 2121 in peripheral out-of-focus image zone 212 of retina 21 (as shown in fig. 3), and as light rays pass through central optical zone 13, light passing through the clear zone 131 of the central optical zone 13 will image a clear image 2111 in the central clear image zone 211 of the retina 21, light passing through the defocus region 132 of the central optical zone 13 forms a second defocused image 2112 in an area outside the clear image 2111 of the central clear image region 211, thereby expanding the defocused image area on the retina 21 through the defocus region 132.

When the eyeball 2 of the wearer browses objects in the horizontal or vertical direction, the clear image 2111 is formed in the central clear image area 211 through the plurality of convex parts 1311 of the clear area 131, so that the objects can be browsed clearly in both the horizontal and vertical directions, while the light passing through the defocus area 132 generates the second defocus image 2112, since the defocus range is expanded through the second defocus image 2112, thereby increasing the optical area range with defocus on the retina 21, so that the function of controlling the myopic degree can still exist without increasing the defocus degree of the lens 1, so that the required defocus degree can be reduced, further the possibility of influencing the central vision due to the excessive defocus degree is reduced, and therefore the ciliary muscle 23 of the eyeball 2 can be relaxed through the defocus area 132 with lower diopter to reduce accommodation, further the crystalline 24 is flattened, therefore, the image of the peripheral optical zone 14 can also fall on the retina 21 to avoid the ciliary muscle 23 on the eyeball 2 from being in a tight spasm state for a long time, so as to prevent the elongation of the axis of the eye, and effectively delay or prevent the myopic deviation from deepening, thereby achieving the effect of correcting and improving myopia.

The invention has the following advantages:

a central optical zone 13 of the lens 1 is provided with a defocus zone 132 in an oblique region, so as to effectively utilize the original space of the central optical zone 13 to expand the defocused image range on the retina 21 of the eyeball 2, because the range of the defocused image is enlarged, the range of the optical area with the defocusing function on the retina 21 is increased, the function of controlling the myopic degree can still exist on the premise of not increasing the defocused degree of the lens 1, the required defocused degree can be reduced, thereby reducing the possibility of the central visual field vision being affected by the excessive defocus, and the ciliary muscle 23 of the eyeball 2 can be relaxed through the defocus area 132 to avoid the ciliary muscle 23 being in a tight spasm state for a long time, thereby preventing the elongation of the axis of the eye, effectively delaying or preventing the myopic deviation degree from being deepened, and achieving the effect of correcting and improving the myopia.

Secondly, the plurality of convex parts 1311 of the clear zone 131 are formed with arc-shaped corners 1312 at the ends, and the corners 1312 are arc-shaped, so that when the lens 1 is used as the lens 1 of the contact lens and worn on the eyeball 2, no sharp foreign body sensation is felt, and the wearing comfort is improved.

Claims

1. A lens for increasing a defocus image range using a star-shaped sharp region, the lens comprising an outer surface and an inner surface, the outer surface and the inner surface being formed with a central optical zone for light to pass through for imaging on a central sharp image zone of a retina of an eyeball, and a peripheral optical zone surrounding the central optical zone and being imaged on a peripheral out-of-focus image zone surrounding the central sharp image zone, the lens comprising:

the central clear image area of the retina is the fovea maculata of the retina, and the peripheral defocused image area is the fovea maculata near the fovea around the fovea maculata; the surface of the central optical area of the lens is provided with a star-shaped clear area which leads light to pass through the central clear image area of the retina for clear imaging, the clear area is provided with a plurality of convex parts extending towards the vertical and horizontal directions, the part outside the clear area is provided with a defocusing area which is used for increasing the defocusing image range in the central clear image area, the surface of the lens is provided with a positioning part which prevents the lens from rotating, and the positioning part of the lens is formed at the edge of the inner surface of the lens; and the clear zone of the central optical zone is a cross-star.

2. The lens of claim 1, wherein the clear zone and the defocus zone of the central optical zone are disposed at an outer surface of the lens.

3. The lens of claim 1, wherein the clear zone and the defocus zone of the central optical zone are disposed at an inner surface of the lens.

4. The lens of claim 1, wherein the outer surface and the inner surface of the lens are provided with a clear area and a defocus area.

5. The lens of claim 1, wherein the plurality of protrusions of the clear zone extend to the periphery of the central optical zone.

6. The lens of claim 1, wherein the plurality of protrusions of the clear area have rounded corners.

7. The lens for increasing the range of defocused images using a star-shaped clear zone as claimed in claim 1, wherein the refractive power of the defocus zone of the central optical zone and the refractive power of the peripheral optical zone are less than the refractive power of the clear zone, and the refractive power of the defocus zone is equal to the refractive power of the peripheral optical zone.