CN210270412U

CN210270412U - Contact lens convenient to distinguish wearing direction

Info

Publication number: CN210270412U
Application number: CN201921392258.5U
Authority: CN
Inventors: 许伟航
Original assignee: Jiangsu Shizhun Medical Equipment Co Ltd
Current assignee: Jiangsu Shizhun Medical Equipment Co Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-04-07
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a contact lens convenient to distinguish wearing direction, the contact lens lamellar body including the arcwall face, the edge that is close to of the positive cambered surface of contact lens lamellar body has the transparent mark piece to shift to be printed on, the interval between transparent mark piece and the positive cambered surface edge of contact lens lamellar body is 2-4mm, the thickness of transparent mark piece is 0.1 mu m-30 mu m, the edge of contact lens lamellar body is provided with the circular arc lead angle. The utility model discloses the edge that is close to of contact lens lamellar body positive cambered surface moves and is printed on transparent mark piece, this transparent mark piece can help the consumer to discern contact lens's front, avoid the consumer to wear the reverse side and lead to discomfort such as eyes are stinged, and do not influence and wear the effect, and prevent that colour chemical layer (toner, pigment) direct contact from eyelid or eyeball surface, avoid causing harm to the health of eyes, can do beautiful pupil and use, design benefit, and novel structure has good application prospect.

Description

Contact lens convenient to distinguish wearing direction

Technical Field

The utility model relates to a contact lens technical field, concretely relates to contact lens convenient to distinguish wearing direction.

Background

The primary purpose of contact lenses is vision correction, which has a relatively good range of vision correction compared to frame lenses, with soft contact lenses being particularly preferred by the market because of their comfort in wearing compared to hard contact lenses. The soft contact lens has a difference between the front and the back in optical design, and when worn, the soft contact lens must be worn in the front direction to have good comfort, and when worn in the back direction, the soft contact lens can cause eye pricking, which affects the eye health of consumers. In the consumer group, especially the consumers who wear contact lenses for the first time or the consumers who wear contact lenses infrequently at ordinary times, because of insufficient wearing experience, the front and the back of the lens are not easy to be distinguished, and the eyes are easy to prick due to wearing wrong directions.

Therefore, how to overcome the above problems is currently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problem that the front and the back of the lens are not easy to distinguish due to insufficient wearing experience of a consumer who wears contact lenses for the first time or a consumer who wears contact lenses infrequently at ordinary times. The utility model discloses a contact lens convenient to distinguish wearing direction, the edge that is close to of the positive cambered surface of contact lens lamellar body moves and is printed on transparent mark piece, this transparent mark piece can help the consumer to discern contact lens's front, avoid the consumer to wear the reverse side and lead to discomfort such as eyes stinging, and do not influence and wear the effect, and prevent that colour chemical layer (toner, pigment) direct contact from eyelid or eyeball surface, avoid causing harm to the health of eyes, can do beautiful pupil and use, design benefit, novel structure has good application prospect.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the contact lens convenient for distinguishing the wearing direction comprises a contact lens body with an arc-shaped surface, wherein transparent mark blocks are printed on the edge of the front arc surface of the contact lens body close to the edge, the distance between each transparent mark block and the edge of the front arc surface of the contact lens body is 2-4mm, the thickness of each transparent mark block is 0.1-30 mu m, and an arc guide angle is arranged on the edge of the contact lens body.

In the contact lens convenient for distinguishing wearing directions, the transparent mark block is made of a polymer containing a polyacrylic acid structure and a silicon component, or a polymer containing a polymethacrylic acid structure and a silicon component, or a polymer containing N-vinyl pyrrolidone and a silicon component, or a polymer containing N, N-dimethylacrylamide and a silicon component, and is transfer-printed on the edge close to the front arc surface of the contact lens sheet, and the contact lens sheet is made of a polymer containing a polyacrylic acid structure, a polymer containing a polymethacrylic acid structure, a polymer containing N-vinyl pyrrolidone, or a polymer containing N, N-dimethylacrylamide.

In the contact lens convenient for distinguishing the wearing direction, the thickness of the transparent mark block is 1-10 μm.

In the contact lens for easy identification of wearing direction, the mark block has a circular shape and a diameter of 0.4mm to 3.0 mm.

In the contact lens convenient for distinguishing the wearing direction, the mark block is rectangular, and has a length of 0.2mm to 3.0mm and a width of 0.2mm to 3.0 mm.

In the contact lens for easy identification of wearing direction, the mark block is arrow-shaped and has a length of 0.6mm-3.0 mm.

In the contact lens convenient for distinguishing the wearing direction, a circle of impression strips is arranged at the position, close to the edge, of the inner arc surface of the contact lens body, and the depth of each impression strip is 1-10 μm.

In the contact lens convenient for distinguishing the wearing direction, the color chemical layer is embedded in the contact lens body.

The utility model has the advantages that: the utility model discloses a contact lens convenient to distinguish wearing direction, the edge that is close to of the positive cambered surface of contact lens lamellar body moves and is printed on transparent mark piece, this transparent mark piece can help the consumer to discern contact lens's front, avoid the consumer to wear the reverse side and lead to discomfort such as eyes stinging, and do not influence and wear the effect, and prevent that colour chemical layer (toner, pigment) direct contact from eyelid or eyeball surface, avoid causing harm to the health of eyes, can do beautiful pupil and use, design benefit, novel structure has good application prospect.

Drawings

Fig. 1 is a schematic structural view of a contact lens structure coated with a color chemistry according to the present invention.

The designations in the drawings have the following meanings:

1: a contact lens body; 101: marking strips; 102: a color chemistry layer; 2: a transparent marking block.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

As shown in figure 1, the contact lens convenient for distinguishing wearing direction of the utility model comprises a contact lens body 1 with an arc surface, a transparent mark block 2 is printed on the edge of the positive arc surface of the contact lens body 1, the distance between the transparent mark block 2 and the edge of the positive arc surface of the contact lens body 1 is 2-4mm, the thickness of the transparent mark block 2 is 0.1-30 μm, the edge of the contact lens body 1 is provided with a circular arc lead angle which can prevent the edge of the contact lens body 1 from being too sharp and scratching human body, thereby playing a role of protection,

preferably, the transparent mark block 2 is made of a polymer containing a polyacrylic acid structure and a silicon component, or a polymer containing a polymethacrylic acid structure and a silicon component, or a polymer containing N-vinyl pyrrolidone and a silicon component, or a polymer containing N, N-dimethylacrylamide and a silicon component, and is transfer-printed on the edge close to the front arc surface of the contact lens sheet body 1, the contact lens sheet body 1 is made of a polymer containing a polyacrylic acid structure, or a polymer containing a polymethacrylic acid structure, or a polymer containing N-vinyl pyrrolidone, or a polymer containing N, N-dimethylacrylamide, and the transparent mark block 2 can be well transfer-printed on the contact lens sheet body 1, preferably, the material of the transparent mark block 2 and the material of the contact lens sheet body 1 have specific characteristic differences, so that the mark can be seen on the front cambered surface of the contact lens sheet body 1 and can not be seen on the back cambered surface of the contact lens, the difference range of the refractive index of the material of the transparent mark block selected on the mark and the refractive index of the material of the contact lens is 0.001-0.1, wherein the better difference range of the refractive index is 0.005-0.05; secondly, the difference range of the visible light transmittance of the material of the marked transparent mark block and the visible light transmittance of the material of the lens is 0.5-50%, preferably 1-40%, the best difference range of the visible light transmittance is 2-20%, the difference range of the elastic modulus of the material of the marked transparent mark block and the material of the lens is preferably below 1MPa, preferably below 0.3MPa, the difference range of the water content of the material of the marked transparent mark block and the material of the lens is preferably below 20%, and preferably below 10%.

Preferably, the transparent mark block 2 has a thickness of 1 μm to 10 μm.

Preferably, the transparent mark block 2 has a circular shape with a diameter of 0.4mm to 3.0 mm.

Preferably, the transparent mark block 2 has a rectangular shape with a length of 0.2mm to 3.0mm and a width of 0.2mm to 3.0 mm.

Preferably, the transparent mark block 2 is arrow-shaped and has a length of 0.6mm to 3.0 mm.

The size is small, the visual line is not influenced under the condition that the front side of the contact lens is convenient for a user to distinguish, the selection effect is good, the contact lens is not limited to the shape, Pad Printing with different shapes can be carried out according to needs, under the production process condition of the contact lens by an injection molding method, the marking material can be achieved by Pad Printing technology (Pad Printing), the Pad Printing technology can be that the marking material is firstly Pad printed on a female mold by a rubber head, then lens material is injected on the female mold, and a male mold is closed and is subjected to subsequent processes of curing, hydrating, sterilizing and the like, so that the contact lens body of the technology disclosed by the scheme can be produced.

Preferably, a circle of impression strips 101 is arranged at the position, close to the edge, of the intrados of the contact lens sheet body 1, and the depth of each impression strip 101 is 1-10 μm, so that the structural strength of the contact lens sheet body 1 can be improved, the edge is prevented from deforming, and the service life is prolonged.

Preferably, the contact lens body 1 is further embedded with a color chemical layer 102, which prevents the color chemical layer (toner, pigment) from directly contacting the eyelid or the surface of the eyeball, thereby avoiding the harm to the health of the eye and being used for beautifying the pupil.

To sum up, the utility model discloses a contact lens convenient to distinguish wearing direction, the edge that is close to of the positive cambered surface of contact lens lamellar body moves and is printed on transparent mark piece, this transparent mark piece can help the consumer to discern contact lens's front, avoid the consumer to wear the reverse side and lead to discomfort such as eyes are stinging, and do not influence and wear the effect, and prevent that colour chemical layer (toner, pigment) direct contact from eyelid or eyeball surface, avoid causing harm to the health of eyes, can do beautiful pupil and use, design benefit, the novel structure has good application prospect.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A contact lens for facilitating wearer direction discrimination, comprising: the contact lens comprises a contact lens body (1) with an arc-shaped surface, wherein a transparent mark block (2) is printed on the edge of the front arc surface of the contact lens body (1) close to the edge, the distance between the transparent mark block (2) and the edge of the front arc surface of the contact lens body (1) is 2-4mm, the thickness of the transparent mark block (2) is 0.1-30 mu m, and an arc guide angle is arranged on the edge of the contact lens body (1).

2. The contact lens for facilitating the discrimination of wearing directions of claim 1, wherein: the thickness of the transparent marking block (2) is 1-10 μm.

3. The contact lens for facilitating the discrimination of wearing directions of claim 1, wherein: the marking block (2) is circular and has a diameter of 0.4mm-3.0 mm.

4. The contact lens for facilitating the discrimination of wearing directions of claim 1, wherein: the marking block (2) is rectangular, and is 0.2mm-3.0mm long and 0.2mm-3.0mm wide.

5. The contact lens for facilitating the discrimination of wearing directions of claim 1, wherein: the marking block (2) is in an arrow shape, and the length of the marking block is 0.6mm-3.0 mm.

6. The contact lens for facilitating the discrimination of wearing directions of claim 1, wherein: the contact lens body (1) is characterized in that a circle of impression strips (101) are arranged at the position, close to the edge, of the inner arc surface of the contact lens body (1), and the depth of each impression strip (101) is 1-10 mu m.

7. The contact lens for facilitating the discrimination of wearing directions of claim 1, wherein: the contact lens body (1) is embedded with a color chemical layer (102).