CN113514962B

CN113514962B - Full Jiao Jingshen contact lens

Info

Publication number: CN113514962B
Application number: CN202110472430.3A
Authority: CN
Inventors: 萧旭贵
Original assignee: Individual
Current assignee: Yu Ka Polytron Technologies Inc.
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2023-06-23
Anticipated expiration: 2041-04-29
Also published as: CN113514962A

Abstract

A full Jiao Jingshen contact lens includes an optical zone with a diameter of 0.5mm to 6mm formed by taking a assumed central optical axis as a circle center, diopter of the optical zone is continuously changed from a circular area outside the central optical axis, a first diopter of the optical zone forms a corresponding first focal length, a second diopter of the optical zone forms a corresponding second focal length, a difference range between the first focal length and the second focal length is a depth of field range, and an image quality formed in the depth of field range is better than an image quality formed outside the depth of field range.

Description

Full Jiao Jingshen contact lens

Technical Field

The present invention relates to contact lenses, and more particularly to a contact lens with continuous zooming.

Background

When the eyes watch objects, the eyes can automatically adjust the shape and thickness of the lens through the ciliary muscle to achieve the purpose of focusing, when the eyes watch far, the ciliary muscle is in a relaxed state, the lens is thinned to adjust the focal length, otherwise, when the eyes watch near, the ciliary muscle is in a contracted and tensed state, the lens is expanded to adjust the focal length, the eyes can be seen clearly after more than about 30 cm or even more along with the increase of age, or the eyes can see objects clearly after a few seconds when the eyes are in near-distance alternation, and the reason of the symptoms is that the lens and associated adjusting tissues in the eyes gradually lose elasticity, the adjusting function is reduced, so that the ciliary muscle is contracted, but the lens is not deformed, and the near objects are not seen clearly.

A multifocal soft contact lens according to the new taiwan patent No. M582144, please refer to fig. X, which includes a central zone, a transition zone, an annular zone, a connecting zone and an outer periphery, wherein the central zone and the annular zone have a certain difference, and when the wearer switches between looking far and near, the wearer can feel blurred or other uncomfortable conditions due to the abrupt change of diopter.

In view of this, how to solve the above-mentioned problems is a primary problem to be solved by the present invention.

Disclosure of Invention

The main object of the present invention is to provide a full Jiao Jingshen contact lens which has the efficacy of relieving eye pressure and correcting presbyopia symptoms.

In order to achieve the above-mentioned objective, the present invention provides a full Jiao Jingshen contact lens, comprising an optical zone, which is a circular area with a diameter of 0.5mm to 6mm formed by taking a assumed central optical axis as a center, wherein the diopter of the optical zone is continuously changed from the circular area outside the central optical axis, a first diopter of the optical zone forms a corresponding first focal length, and a second diopter of the optical zone forms a corresponding second focal length.

And a depth of field range, which is the difference range between the first focal length and the second focal length, wherein the quality of an image formed in the depth of field range is better than that of an image formed outside the depth of field range.

Preferably, the ADD of the depth of field range is in the range between 0.5 and 4.0D.

Preferably, the focal length in the depth of field is continuously increasing from the first focal length to the second focal length.

Preferably, the focal length in the depth of field is continuously decreasing from the first focal length to the second focal length.

Preferably, the focal length in the depth of field is gradually increased and gradually decreased from the first focal length to the second focal length.

Preferably, the optical zone has a first optical zone and a second optical zone extending outward from the first optical zone, the depth of field range has a first range corresponding to the first optical zone and a second range corresponding to the second optical zone, the focal length in the first range is in increasing trend, and the focal length in the second range is in decreasing trend.

Preferably, the focal length in the depth of field range is gradually decreased from the first focal length to the second focal length.

Preferably, the optical zone has a first optical zone and a second optical zone extending outward from the first optical zone, the depth of field range has a first range corresponding to the first optical zone and a second range corresponding to the second optical zone, the focal length in the first range decreases, and the focal length in the second range increases.

Preferably, the first optical area is a circular area with a diameter of 0.5mm to 4mm formed by taking a assumed central optical axis as a center, and the second optical area is a circular area with a diameter of 4mm to 6mm formed by taking a assumed central optical axis as a center.

The foregoing objects and advantages of the invention will be readily apparent from the following detailed description of the selected embodiments taken in conjunction with the accompanying drawings.

Drawings

FIG. 1 is a schematic plan view of a full Jiao Jingshen contact lens of the present invention;

FIG. 2 is a schematic plan view of the optical zone and depth of field range of the present invention;

FIG. 3 is a focal length distribution diagram of a first embodiment of the present invention;

FIG. 4 is a focal length distribution diagram of a second embodiment of the present invention;

FIG. 5 is a focal length distribution diagram of a third embodiment of the present invention;

fig. 6 is a focal length distribution diagram of a fourth embodiment of the present invention.

Detailed Description

Referring to fig. 1 and 2, a first embodiment of the present invention is shown, which is for illustrative purposes only and is not limited to the embodiment.

The full Jiao Jingshen contact lens 1 according to the first embodiment of the present invention comprises an optical zone 10, a depth of field 20 and a peripheral zone 30, wherein:

the optical zone 10 is a circular zone with a diameter of 0.5mm to 6mm and the center of the full Jiao Jingshen contact lens 1 is taken as a assumed center optical axis L, and the assumed center optical axis L is taken as the center, so the design is because, under normal use conditions, the visual zone is mostly located in the circular zone with a diameter of 6mm, the radius of curvature (Base Curve) of the inner surface of the optical zone 10 is between 8.0mm to 9.0mm, if the Base Curve is too large, the problem that the lens cannot be adhered to the eyeball easily and easily shifts can occur, and if the Base Curve is too small, the discomfort of the eye is easily caused, generally, the Base Curve of the lens is about 1.1 times the difference of the Base Curve of the eyeball, in this embodiment, the full Jiao Jingshen contact lens 1 is an optical system with an aspherical front Curve and a single curvature, in other embodiments, the full Jiao Jingshen contact lens 1 can be an optical system with a single curvature front Curve and a rear Curve or a combined optical system with a front Curve and a rear Curve, and a protection system with both the front Curve and the following curves belong to the protection system.

The equation of the aspherical optical system of the present invention is as follows:

z=surface profile of surface parallel to optical axis

s=radial distance from the optical axis

C=inverse of curvature and radius

k=conic constant

A4, A6, a … =4 th, 6 th, 8 th … th aspheric coefficients

When k=0, the conical surface is spherical; when k > -1, the conical surface is elliptical; when k= -1, the conical surface is parabolic; when k < -1, the conical surface is hyperboloid.

The full Jiao Jingshen contact lens 1 of the aspherical optical system provided by the present invention can be manufactured by conventional manufacturing methods, which can be roughly divided into three types: including turning (the Cutting), die Casting (Cast Molding), spin Casting (Spin Casting), and the like.

The full Jiao Jingshen contact lens 1 of the present invention can be made of the following materials: hydroxyethyl methacrylate (HEMA), methyl Methacrylate (MMA) and glycerol acrylate copolymer, hydrophilic hydrocolloid, hydrophobic silicone gum, are just examples and are not limiting of the materials selected in the present invention.

The full Jiao Jingshen contact lens 1 of the present invention is suitable for use in a wide variety of soft contact lenses, for example: a silicone soft contact lens, a multifocal soft contact lens, a terraced soft contact lens, an astigmatic soft contact lens, a hydrogel soft contact lens, a blue-filter soft contact lens, a colored soft contact lens. The full Jiao Jingshen contact lens 1 of the present invention is suitable for use with a wide variety of hard contact lenses, for example: night wear type hard contact lens, astigmatic type hard contact lens, aspheric hard contact lens, and hard contact lens special for keratoconus.

The optical zone 10 includes a first optical zone 11 and a second optical zone 12, wherein the first optical zone 11 is a circular area surrounded by the assumed central optical axis L, and in this embodiment, the diameter of the first optical zone 11 is 0.5mm to 4mm, and in practical structural design, the diameter of the first optical zone 11 is not limited to the range of 0.5mm to 4mm, and can be adjusted according to imaging quality or manufacturing technology. The diopter of the first optical zone 11 continuously changes outwards along the radial direction from the assumed central optical axis L, more specifically, the diopter of the first optical zone 11 continuously increases outwards along the radial direction from the assumed central optical axis L, the diopter of the first optical zone 11 also can continuously decrease outwards along the radial direction from the assumed central optical axis L, the setting of the aforementioned trend can be adjusted according to the actual requirement of the wearer, and the setting of the trend also comprises the starting diopter of the first optical zone 11, if the wearer is a far vision patient, the diopter suitable for the far vision patient should be taken as the starting value.

The second optical area 12 is a circular area extending outwards from the first optical area 11, in this embodiment, the second optical area 12 is a circular area with a diameter of 4mm to 6mm around the assumed central optical axis L, and in practical structural design, the diameter of the first optical area 11 is not limited to the range of 4mm to 6mm, and can be adjusted according to imaging quality or manufacturing technology. The diopter of the second optical zone 12 is continuously changed outwards along the radial direction from the assumed central optical axis L, and further, the diopter of the second optical zone 12 is continuously increased outwards along the radial direction from the assumed central optical axis L, the diopter of the second optical zone 12 can also continuously decreased outwards along the radial direction from the assumed central optical axis L, and the setting of the foregoing trend can be adjusted according to the actual requirement of the wearer.

The peripheral area 30 is a circular area with a diameter of 6mm around the assumed central optical axis L, the peripheral area 30 is a non-main vision area, the effect of correcting vision is not provided, the structural design of the peripheral area 30 mainly improves the comfort level of the wearer when using the full Jiao Jingshen contact lens 1, and the full Jiao Jingshen contact lens 1 can be stably attached to the cornea of the eye by increasing the wearing area of the full Jiao Jingshen contact lens 1 and the eye, so that the full Jiao Jingshen contact lens 1 is prevented from slipping to the inner side of eyelid to cause discomfort to the wearer.

Referring to fig. 2 again, the optical zone 10 has a first diopter 13 adjacent to the assumed central optical axis L, the first diopter 13 forms a corresponding first focal length 14, the optical zone 10 has a second diopter 15 distant from the assumed central optical axis L, the second diopter 15 forms a corresponding second focal length 16, the first diopter 13 is smaller than the second diopter 15, so that the corresponding first focal length 14 is larger than the second focal length 16, the difference between the first focal length 14 and the second focal length 16 forms the depth of field range 20, the quality of an image formed in the depth of field range 20 is better than the quality of an image formed outside the depth of field range 20, in other words, the depth of field range 20 has the effect of correcting vision, the ADD of the depth of field range 20 is between 0.5 and 4.0D, and it is worth noting that the corresponding first focal length 14 and the second focal length 16 form a continuously changing trend within the depth of field range 20 due to the continuously changing trend between the first diopter 13 and the second diopter 15.

The depth of field range 20 can be further divided into a first range 21 and a second range 22, wherein the first range 21 has a corresponding relationship with the first optical zone 11 of the optical zone 10, and the second range 22 has a corresponding relationship with the second optical zone 12 of the optical zone 10, so that when the diameter ranges of the first and second

optical zones

11, 12 are adjusted according to design requirements, the intervals of the first and

second ranges

21, 22 of the depth of field range 20 are also correspondingly changed.

When the wearer views objects with different distances, the brain of the wearer can accurately image the objects on the retina of the wearer by judging the distance between the objects and the distance and selecting the most appropriate focal length from the depth of field range 20, more specifically, when the wearer views objects with a shorter distance, the brain of the wearer can select the focal length most suitable for viewing the objects from the depth of field range 20, so that the ciliary muscle of the wearer does not need excessive force, the situation that the ciliary muscle is stretched and contracted for a long time is reduced, and the aim of effectively relieving the eye pressure is achieved; when the wearer gazes at a far object, the brain of the wearer can select the focal length most suitable for watching the far object from the depth of field range 20, so that the wearer can clearly see the far object, in addition, as the focal length in the depth of field range 20 changes to be a continuous change trend, the wearer can not jump the image visually due to the sharp change of the focal length when the wearer changes from watching to watching, and the discomfort of dizzy of the wearer can be avoided.

The full Jiao Jingshen contact lens 1 provided by the invention is also suitable for the wearer with reduced lens adjusting function, when the wearer with reduced lens adjusting function needs to see the object at a short distance, the wearer can select the focal length of the object to be seen from the depth of field range 20 through the brain of the wearer, so that even if the curvature of the lens is not changed obviously for focusing, the object can be accurately imaged on the retina of the wearer, and further a clear visual image can be generated.

Referring to fig. 3, the full Jiao Jingshen contact lens 1 according to the first embodiment of the present invention has the first diopter 13 in the optical zone 10 at a position adjacent to the assumed central optical axis L, the second diopter 15 in the optical zone 10 at a position far from the assumed central optical axis L, the first diopter 13 forms a corresponding first focal length 14 of about 0.33m, the second diopter 15 forms a corresponding second focal length 16 of about 1m, the ADD of the depth of field range 20 is 2.0, and the focal length within the depth of field range 20 is continuously increasing from the first focal length 14 to the second focal length 16. When the wearer views objects at different distances, the brain of the wearer can select the most appropriate focal length from the depth of field range 20 (0.33 m to 1 m), so that the objects can be accurately imaged on the retina to generate clear visual images, and the wearer can not generate dizzy discomfort caused by sharp change of the focal length when viewing objects at near and far distances due to continuous increasing trend of the focal length in the depth of field range 20 of 0.33m to 1 m.

Referring to fig. 4, the full Jiao Jingshen contact lens 1 according to the second embodiment of the present invention has the first diopter 13 in the optical zone 10 at a position adjacent to the assumed central optical axis L, the second diopter 15 in the optical zone 10 at a position far from the assumed central optical axis L, the first diopter 13 forms a corresponding first focal length 14 of about 1m, the second diopter 15 forms a corresponding second focal length 16 of about 0.33m, the ADD of the depth of field range 20 is 2.0, and the focal length in the depth of field range 20 is continuously decreasing from the first focal length 14 to the second focal length 16. When the wearer views objects at different distances, the brain of the wearer can select the most appropriate focal length from the depth of field range 20 (1 m to 0.33 m), so that the objects can be accurately imaged on the retina to generate clear visual images, and the wearer can not generate dizzy discomfort caused by sharp change of the focal length when viewing objects at near and far distances due to continuous decreasing trend of the focal length in the depth of field range 20 of 1m to 0.33 m.

Referring to fig. 5, in the full Jiao Jingshen contact lens 1 provided by the third embodiment of the present invention, the optical zone 10 has the first diopter 13 at a position adjacent to the assumed central optical axis L, the optical zone 10 has the second diopter 15 at a position far from the assumed central optical axis L, the first diopter 13 forms a corresponding first focal length 14 of about-0.33 m, the second diopter 15 forms a corresponding second focal length 16 of about-0.33 m, the ADD of the depth of field range 20 is 2.0, and the focal length in the depth of field range 20 is gradually increased from the first focal length 14 to the second focal length 16, further, the focal length in the first range 21 corresponding to the first optical zone 11 (circular area with a diameter of 0.5mm to 4 mm) is gradually increased, and the focal length in the second range 22 corresponding to the second optical zone 12 (circular area with a diameter of 4mm to 6 mm) is gradually decreased.

When the wearer looks at a near object, the wearer can accurately image the object on the retina by correcting the inner optical zone and the outer optical zone (the circular zone with the diameter of about 1mm to 3mm and the diameter of 5mm to 6 mm) so as to generate a clear visual image, while when looking at a near object, the wearer can see the object clearly through the middle zone (the circular zone with the diameter of about 3mm to 5 mm) of the optical zone 10, and the wearer can select the focal length most suitable for looking at the near object from the depth of field range 20 through the brain of the wearer, so that the ciliary muscle of the wearer does not need excessive force, the situation that the ciliary muscle is tightly contracted for a long time is reduced, thereby achieving the aim of effectively relieving the eye pressure, and the wearer does not feel dizzy discomfort due to abrupt change of the focal length when looking at the near object because the focal length in the depth of range 20 is in a continuous change trend.

Referring to fig. 6, the fourth embodiment of the present invention provides a full Jiao Jingshen contact lens 1, wherein the optical zone 10 has the first diopter 13 at a position adjacent to the assumed central optical axis L, the optical zone 10 has the second diopter 15 at a position far from the assumed central optical axis L, the first diopter 13 forms a corresponding first focal length 14 of about-1.0 m, the second diopter 15 forms a corresponding second focal length 16 of about-1.0 m, the ADD of the depth of field range 20 is 2.0, and the focal length in the depth of field range 20 is gradually decreased from the first focal length 14 to the second focal length 16, further, the focal length in the first range 21 corresponding to the first optical zone 11 (circular area with a diameter of 0.5mm to 4 mm) is gradually decreased, and the focal length in the second optical zone 12 (circular area with a diameter of 4mm to 6 mm) is gradually increased in the corresponding second range 22.

When the wearer looks at a near object, the wearer can accurately image the object on the retina through the correction of the middle area (circular area with the diameter of 3mm to 5 mm) of the optical area 10 so as to generate a clear visual image, and when looking at a near object, the wearer can see the object through the inner optical area and the outer optical area (circular area with the diameter of 1mm to 3mm and the diameter of 5mm to 6 mm), and the wearer can select the focal length most suitable for looking at the near object from the depth of field range 20 through the brain of the wearer, so that the ciliary muscle of the wearer does not need excessive force, the situation that the ciliary muscle is tightly contracted for a long time is reduced, the aim of effectively relieving the eye pressure is achieved, and the wearer does not generate dizzy uncomfortable feeling due to abrupt change of the focal length when looking at the near object because the focal length in the depth of field range 20 is in a continuous change trend.

The above examples are provided for illustration only and are not intended to limit the invention, so that the numerical variations or substitutions of equivalent elements are within the scope of the invention.

In view of the foregoing, it will be apparent to those skilled in the art that the present invention can be practiced in accordance with the provisions of the patent statutes.

Claims

1. A full Jiao Jingshen contact lens comprising:

an optical zone, which is a circular area with a diameter of 0.5mm to 6mm formed by taking a assumed central optical axis as a circle center, wherein the diopter of the optical zone is continuously changed from the circular area outside the central optical axis, a first diopter of the optical zone forms a corresponding first focal length, and a second diopter of the optical zone forms a corresponding second focal length;

a depth of field range, which is a difference range between the first focal length and the second focal length, wherein the imaging definition formed in the depth of field range is better than the imaging definition formed outside the depth of field range;

the focal length in the depth of field range is gradually increased and then gradually decreased or gradually increased and then gradually decreased from the first focal length to the second focal length.

2. The full Jiao Jingshen contact lens of claim 1, wherein the depth of field range ADD is in a range between 0.5 and 4.0D.

3. The full Jiao Jingshen contact lens of claim 1, wherein the focal length within the depth of field is continuously increasing from the first focal length to the second focal length.

4. The full Jiao Jingshen contact lens of claim 1, wherein the focal length within the depth of field is continuously decreasing from the first focal length to the second focal length.

5. The full Jiao Jingshen contact lens of claim 1, wherein the optical zone has a first optical zone and a second optical zone extending outwardly from the first optical zone, the depth of field range having a first range corresponding to the first optical zone and a second range corresponding to the second optical zone, the focal length in the first range being in an increasing trend and the focal length in the second range being in a decreasing trend.

6. The full Jiao Jingshen contact lens of claim 1, wherein the optical zone has a first optical zone and a second optical zone extending outwardly from the first optical zone, the depth of field range having a first range corresponding to the first optical zone and a second range corresponding to the second optical zone, the focal length in the first range being in a decreasing trend and the focal length in the second range being in an increasing trend.

7. The full Jiao Jingshen contact lens of claim 5 or 6, wherein the first optical zone is a circular zone having a diameter of 0.5mm to 4mm centered about a hypothetical central optical axis and the second optical zone is a circular zone having a diameter of 4mm to 6mm centered about a hypothetical central optical axis.