WO2014058205A1 - Pinhole contact lens in which symmetrical light quantity reinforcement unit is formed - Google Patents

Description

Pinhole contact lens with symmetric light enhancement

The present invention relates to a pinhole contact lens in which a pinhole is perforated in a center of a contact lens, and more particularly, to a pinhole contact lens having a symmetrical light quantity reinforcement portion formed around a pinhole at the center of the lens.

Recognition of vision is performed when the light emitted from the subject is refracted by the lens through the cornea, penetrates the vitreous body, and forms an image on the retina, and the imaged information is transmitted to the cerebrum through the optic nerve. At this time, if the lens is thick or the eye axis (the length of the front and back of the eyeball) is long, the light emitted from the subject forms an image in front of the retina, and the lens is thin or the eye axis is short, so the light emitted from the subject forms the image in the rear of the retina. It appears as a hyperopia, and the surface of the cornea or lens is not uniform, so when light fails to focus at one point, it appears as astigmatism.

As a means for correcting such a myopia, hyperopia, or astigmatism, eyeglasses and contact lenses are widely known to refract light entering the eye to focus on the retina. Recently, the retina is limited by limiting the light beam width of light entering the eye. A pinhole contact lens has been proposed that allows the image to form without spreading and thus exhibits the same effect as the image focusing on.

However, when the light beam width was limited to the size of the pinhole, there was a problem that the subject appeared dark because the amount of light entering the eyeball was reduced.In order to solve this problem, the brightness of the image formed on the retina was improved by drilling a plurality of minute holes around the pinhole. Technology has been developed.

'Patent Document 1' relates to a contact lens having a plurality of fine holes perforated around an opening, as shown in FIG. 1, a light shielding portion 1 for shielding incident light incident on the cornea, and a light transmissive material for transmitting incident light. It consists of a lens body (2) covering the front and rear of the light shielding portion 1, the soft contact is formed in the light shielding portion 1 with an opening (3) and a plurality of holes (4) of smaller diameter than the opening A lens is disclosed. When the conventional soft contact lens disclosed in Patent Document 1 is worn, light emitted from a subject is transmitted through the lens main body 2 on the front of the light shielding part 1, the opening part 3 and the lens main body 2 on the rear of the light shielding part 1. The incident light enters the cornea and the light passes through the lens and the vitreous body to form an image on the retina. At this time, the light reaching the retina is narrowly limited in the width of the light beam by the opening 3, so that a relatively clear image forms in the retina, and the brightness of the image is improved by the light passing through the minute hole 4 around the opening 3. do.

However, in the conventional contact lens in which a plurality of minute holes are drilled around the openings, a plurality of minute holes 4 are randomly disposed around the opening 3, so that the brightness of the image formed in the retina through the openings is irregular and both eyes The visual field of view is changed to reduce the vision correction effect, there is a problem that the wearer feels uncomfortable, such as dizziness, foreign body.

[Preceding technical literature]

[Patent Documents]

(Patent Document 1) KR 10-2012-0098641 A (September 5.)

The present invention has been made to solve the above problems, the problem to be solved in the present invention is to provide a pinhole contact lens to uniformly improve the brightness of the image formed in the retina through the pinhole.

Pinhole contact lens formed with a symmetrical light amount reinforcement portion according to the present invention for solving the above problems is a lens body of a transparent material; A light blocking unit inserted into the lens body; A pinhole formed at the center of the light blocking unit; And a symmetrical light quantity reinforcing part formed in the light blocking part so as to be symmetrical about the pinhole.

The symmetric light intensity reinforcing part is composed of one or more ring-shaped light amount reinforcing part formed to be concentric with the pinhole, a straight slit radially formed around the pinhole, and a light amount reinforcing pinhole formed on a concentric circle centering the pinhole, or a combination thereof It is characterized by the technical features.

The pinhole contact lens having the symmetric light amount reinforcement part according to the present invention can eliminate unnaturalness when worn by uniformly improving the brightness of an image formed in the retina by the pinhole.

In addition, by adjusting the radius of curvature, width, shape and the like of the symmetric light amount reinforcement portion, even when the eyesight of both eyes of the wearer is different, the eyesight can be equally corrected.

1 is a contact lens in which a plurality of minute holes are drilled around a conventional pinhole

2 is a pinhole contact lens having a symmetric light intensity reinforcement unit according to the present invention;

3 is a cross-sectional view of a pinhole contact lens having a symmetric light intensity reinforcement unit according to the present invention.

4 is a cross-sectional view of the lens body;

5 to 9 is a plan view of the light blocker formed with the symmetric light amount enhancement portion

Hereinafter, a pinhole contact lens having a symmetric light amount reinforcement part according to the present invention will be described in more detail with reference to the accompanying drawings.

The present invention relates to a pinhole contact lens having a symmetrical light intensity reinforcement part, FIG. 2 is a perspective view of a pinhole contact lens having a symmetrical light intensity reinforcement part according to the present invention, and FIG. It is a cross section.

The pinhole contact lens having the symmetric light amount reinforcement part according to the present invention may be formed at the center of the lens body 10 of the transparent material, the light blocking part 20 inserted into the lens body 10, and the light blocking part 20. It comprises a pinhole 30 and the symmetrical light amount reinforcing portion 40 formed in the light blocking portion 20 to be symmetrical around the pinhole 30. The pinhole contact lens having the symmetrical light intensity reinforcement part according to the present invention reduces the light beam width of the light emitted from the subject through the pinhole 30 so that a clear image is formed on the retina, and the symmetrical light intensity reinforcement part 40 is formed around the pinhole 30. By this, the brightness of the image formed is uniformly improved. Hereinafter, each component will be described in detail.

The lens body 10 is a transparent circular member, and the surface is bent to a predetermined curvature so that the lens body 10 may be in close contact with the surface of the cornea when worn by the wearer. The material of the lens body 10 is a cross-linked polymer of various monomers, hema (MEMA, 2-hydroxy-ethyl methacrylate), glycerol methacrylate (Glycerol Methachrylate), silicone hydrogellens, and perperylcholine (Phosphorylcholine) is mainly used. The diameter (D) of the lens body 10 used for the soft contact lens should be at least larger than the diameter of the cornea. In a typical person, the diameter of the lens body 10 is 13 because the diameter of the cornea is within about 12 mm. It is preferable that it is about 14 mm. However, the diameter D of the lens body 10 may be appropriately selected in consideration of the corneal diameter of the wearer.

The lens body 10 may be formed in two types. First, as shown in FIG. 4A, an insertion slot 12 into which the light blocking unit 20 can be inserted is formed in the center of the lens body 10. The lens body 10 in which the insertion slot 12 is formed as shown in FIG. 4 (a) may be manufactured by inserting and molding a material such as hema into a mold having a protrusion to form the insertion slot. When the light blocking unit 20 is inserted into the lens body 10 in which the insertion slot 12 is formed, the pinhole contact lens in which the symmetrical light amount reinforcement unit according to the present invention is formed is completed.

Second, as shown in FIG. 4 (b), the lens body 10 is composed of two lens members 14 and 16 to be sealed or fused. In the case of the lens body 10 composed of two lens members 14 and 16 as shown in FIG. 4 (b), the light blocking portion 20 is inserted between the two lens members 14 and 16 and then the lens member. The pinhole contact lenses in which the symmetrical light quantity reinforcement portion according to the present invention are formed by sealing (14, 16) are fused or fused.

5 to 9 are plan views of the light blocking unit 20 in which the symmetric light amount reinforcing portions 40 are formed. 5 to 9 illustrate various embodiments of the light blocking unit 20 that can be applied to the pinhole contact lens in which the symmetric light amount reinforcing portion is formed according to the present invention.

The light shielding portion 20 is a curved shape that follows the surface shape of the cornea as an opaque member. Although there is no limitation on the planar shape of the light shielding portion 20, it is preferable that the light blocking portion 20 has a circular shape to completely cover the pupil. The light blocking unit 20 may include a colorant so that red, blue, and the like may appear when worn, thereby functioning as a color contact lens. The size of the light blocking unit 20 should be at least larger than the size of the pupil. In the case of a typical person, the light blocking unit 20 is less than about 9 mm when the size of the pupil is maximized, so that the light blocking unit 20 is formed in a circular shape. It is preferable that the diameter d of 20 is 9 mm or more.

The pinhole 30 is a passage for puncturing the center of the light blocking unit 20 to allow the light emitted from the subject to enter the cornea, and is preferably formed in a circular shape. It is preferable that the diameter of the pinhole 30 is 0.1 to 2.0 mm. The reason is that when the diameter of the pinhole 30 is 0.1 to 2.0 mm, the wearer's naked eye wears when wearing the pinhole contact lens in which the symmetric light intensity reinforcement is formed according to the present invention. This is because the visual acuity is corrected up to 1.0, although it depends on the visual acuity. In this regard, when the diameter of the pinhole 30 is less than 0.1 mm, the amount of light entering the eye through the pinhole 30 is small and the image looks dark, and the phenomenon that the image is blurry due to diffraction occurs, and the pinhole 30 In the case where the diameter of the?) Exceeds 2.0 mm, the luminous flux of light entering the eye through the pinhole 30 is wide, resulting in blurring of the image on the retina. Therefore, the diameter of the pinhole 30 is preferably appropriately selected according to the wearer's condition in the range of 0.1 ~ 2.0mm.

The symmetric light intensity reinforcement 40 is symmetrical about the pinhole 30 drilled in the center of the light blocking unit 20, for example, the pinhole 30 and the symmetric light intensity reinforcement 40 are concentric. It is formed in the width of. It is preferable that the width of the symmetric light amount reinforcement part 40 is smaller than the diameter of the pinhole 30, and the curvature radius (when the light amount reinforcement part is ring-shaped) is smaller than the radius of the pupil. Because, in order to reinforce the brightness of the image formed by the light passing through the pinhole 30, a part of the light emitted from the subject must enter the eye through the symmetrical light amount reinforcing part 40, the curvature of the symmetrical light amount reinforcing part 40 This is because the light cannot enter the eye through the symmetric light amount reinforcement 40 when the radius or the length is larger than the pupil.

Next, an embodiment of the light blocking unit 20 in which the symmetric light amount reinforcing portion 40 is formed will be described in detail.

FIG. 5 illustrates a light blocking unit 20 in which a ring-shaped symmetric light amount reinforcing portion 40 is formed. One ring-shaped symmetrical light quantity reinforcing portion 40 is formed to be concentric with the pinhole 30 formed at the center of the light blocking portion 20, so that the light passing through the symmetrical light quantity reinforcing portion 40 passes through the pinhole 30. It may enter the eye symmetrically to the light passing through.

FIG. 6 shows another type of light blocking part 20 in which a ring-shaped symmetrical light amount reinforcing part 40 is formed, and two ring-shaped symmetrical light amount reinforcing parts 40, that is, a first ring-shaped symmetrical light amount reinforcing part 40. 42 and the second ring-shaped symmetrical light quantity reinforcing portion 44 are formed to be concentric with the pinhole 30 formed at the center of the light blocking portion 20. The embodiment as shown in FIG. 6 is for increasing the amount of light entering the eye, and is particularly suitable for a wearer having a small iris. In the present invention, since the width of the symmetrical light quantity reinforcing portion 40 cannot be formed to a predetermined size or more due to diffraction, the limitation of the light beam width, etc., a method of increasing the number of ring-shaped symmetrical light quantity reinforcing portions is adopted as a countermeasure. Although only two ring-shaped symmetrical light amount reinforcement parts are illustrated in FIG. 6, three or more ring-shaped symmetrical light amount reinforcement parts may be formed in the light blocking unit 20.

FIG. 7 illustrates a light blocking unit 20 in which a symmetrical light quantity reinforcing portion 40 having a radial slit shape is formed, and a straight slit 46 is formed radially around the pinhole 30. The embodiment as shown in FIG. 7 is to solve a phenomenon in which an image blurring may occur when the symmetric light amount reinforcing part has a ring shape, and it is a structure that can be selectively adopted according to a wearer's preference.

FIG. 8 illustrates a light blocking unit 20 in which a ring-shaped symmetrical light-enhancing portion 40 shown in FIGS. 5 and 6 and a radial slit-shaped symmetrical light-enhancing portion 40 shown in FIG. 7 are formed together. The first ring-shaped symmetrical light quantity reinforcing portion 42 is formed concentric with the pinhole 30, and the straight slit 46 is radially formed around the pinhole 30. At this time, two or more ring-shaped symmetric light amount reinforcement may be formed as shown in FIG. 6. The light blocking unit 20 shown in FIG. 8 simultaneously has the features of the light blocking unit 20 shown in FIGS. 5 to 7, and the amount of light entering the eye increases to brighten the image, while the image may appear slightly blurred. . Therefore, the width and the radius of curvature of the ring-shaped symmetric light quantity reinforcement portion, the length of the straight slit 46, etc. should be appropriately adjusted within the range where the wearer does not feel uncomfortable.

FIG. 9 illustrates the light blocking unit 20 in which the pinholes 48 for light quantity reinforcement are formed as the symmetrical light quantity reinforcing portions 40. The light amount reinforcing pinhole 48 is formed on a concentric circle centering on the pinhole 30. That is, the symmetric light quantity reinforcing portion 40 having a constant distance between the light quantity reinforcing pinhole 48 and the pinhole 30 is formed. In the case of the light blocking unit 20 illustrated in FIG. 9, the amount of light entering the eyeball is dark, but the image is dark. However, since the image is cleanly formed, the light blocking unit 20 may be used in a bright environment such as a sunny day, a beach, or a snowy environment.

When wearing a pinhole contact lens having a symmetric light amount reinforcement portion according to the present invention, the sharpness and brightness of an image are remarkably improved compared to a field of view when a contact lens having a plurality of fine holes is drilled around a conventional pinhole.

[Description of the code]

10 Lens Body 12 Insertion Slot

14, 16 Lens member 20 Light blocking part

30 Pinhole 40 Symmetric light intensity reinforcement

42 first ring-shaped symmetric light intensity reinforcement

44 2nd ring shape symmetric light intensity reinforcement

46 Straight Slit 48 Light Hole Reinforcement Pinhole

Claims (8)

Lens body 10 of the transparent material; A light blocking unit 20 inserted into the lens body 10; A pinhole 30 formed in the center of the light blocking unit 20 and The pinhole contact lens with a symmetrical light amount reinforcement portion is characterized in that it comprises a symmetrical light amount reinforcement portion 40 formed in the light blocking unit 20 to be symmetrical around the pinhole (30). The method according to claim 1, A pinhole contact lens having a symmetrical light intensity reinforcement part is formed in the center of the lens body 10, an insertion slot 12 into which the light blocking part 20 can be inserted. The method according to claim 1, The lens body 10 is composed of two lens members (14, 16), The light blocking portion 20 is a pinhole contact lens formed with a symmetrical light amount reinforcement, characterized in that inserted between the two lens members (14, 16). The method according to any one of claims 1 to 3, The symmetrical light intensity reinforcing part 40 is a ring shape, the pinhole contact lens with a symmetrical light amount reinforcing part is formed to be concentric with the pinhole (30). The method according to any one of claims 1 to 3, The symmetric light intensity reinforcement 40 is a first ring-shaped symmetric light intensity reinforcement 42 and a second ring-shaped symmetric light intensity reinforcement 44 formed to be concentric with the pinhole 30. An additionally formed pinhole contact lens. The method according to any one of claims 1 to 3, The symmetric light intensity reinforcement unit 40 is a pinhole contact lens with a symmetric light intensity reinforcement unit, characterized in that the straight slit 46 formed radially around the pin hole (30). The method according to any one of claims 1 to 3, The symmetric light intensity reinforcement 40 is a symmetric light intensity reinforcement, characterized in that the ring-shaped symmetric light intensity reinforcement formed to be concentric with the pinhole 30 and a straight slit 46 formed radially around the pinhole 30. An additionally formed pinhole contact lens. The method according to any one of claims 1 to 3, The symmetrical light intensity reinforcing part 40 is a pinhole contact lens having a symmetrical light amount reinforcing part, characterized in that the light amount reinforcing pinhole (48) formed on the concentric circle centered on the pinhole (30).

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