TW201436932A - Contact lenses inner arc polishing device and method - Google Patents

Abstract

The invention relates to a contact lenses inner arc polishing device and method. The contact lenses inner arc polishing device comprises a polishing main body, a polishing portion and a lapping fabric, wherein the hardness of the polishing portion is between 15% and 90% of the hardness of contact lenses. Moreover, the polishing portion is disposed at one end of the polishing main body. The lapping fabric is wrapped on the polishing portion. While using the contact lenses inner arc polishing device to polish the contact lenses, the polishing portion leans perfectly against the each arc of the contact lenses simultaneously so that the contact lenses inner arc polishing device could simultaneously polish each arc of the contact lenses at one time, thereby shortening polishing time.

Description

Contact lens inner arc polishing device and method

The invention is a polishing device and method, in particular to a contact lens internal arc polishing device and method.

The step of polishing the inside of the contact lens is important in order to have a proper fit of the contact lens with the shape of the eyeball and to provide a clearer image and comfort for the contact lens wearer.

Existing polishing tools include a polishing body (usually a copper tube) with a polishing head on which the inside of the contact lens is polished to achieve the desired optical curvature and clarity.

However, Rigid Gas-Permeable (RGP) is divided into hard oxygen-permeable corrective vision contact lenses and hard oxygen-permeable corneal contact lenses, in which the corrective vision contact lens is not a single geometry. The shape, which is steeper in the middle and gradually flattened to both sides, often contains a combination of several bevels and optical curvature to achieve (match with the shape of the cornea). See Figure 1. In the prior art, the inner arc of the contact lens usually adopts a plurality of ball-curing heads with different curvatures, and the multiple-polishing method is used to obtain the required bevel and optical curvature, but due to the difference in hardness and ball diameter between the tools used, Different optical curvature intersections still can not be effectively reached A smooth polishing effect that causes the foreign body of the contact lens wearer.

In addition, in the case of Orthokeratology contact lenses, since the design of the inner surface of the lens is a reverse geometry, please refer to Fig. 2, in order to flatten the curvature of the cornea I, therefore, the base arc II is flat, reverse arc III is more curved, the parallel arc IV is flatter than the reverse arc but curved than the base arc, so the polishing process is difficult. For example, when the base arc is polished, since the curvature of the base arc is much larger than the curvature of the inverted arc and the parallel arc, It is impossible to polish the base arc at all; if it is polished for parallel arc, it will interfere with the base arc, and polish the base arc and change the curvature; while the reverse arc has no proper polishing angle, or For the reverse arc polishing, it will interfere with the base arc and the parallel arc, and polish the base arc and the flat arc, thus changing the curvature. Therefore, traditional corneal contact lenses often do not take the polishing step.

In the case of a Ortho-K CL contact lens, the inner side surface (ie, one side in contact with the cornea) is usually cut by a CNC machine, so that the inner side surface has a certain degree of smoothness, but is still relatively rough relative to the cornea. Therefore, the cornea may be damaged to the user, and the rough surface of the contact lens may easily deposit proteins in the tear fluid, thereby affecting the clarity and comfort of the corneal contact lens, causing corneal irritation and allergies, and affecting The effect of myopia treatment, therefore, based on safety and hygiene and wearing comfort, and treatment effects, corneal contact lenses still need to be polished.

In summary, the conventional RGP corrective vision contact lenses and the polishing technique of the Orthokeratology contact lenses are still inferior in practical implementation, and need to be improved.

In view of the shortcomings derived from the above-mentioned current situation, the creators of this case have improved and innovated, and after years of painstaking research, they finally succeeded in research and development of the inner arc polishing method of the corneal plastic contact lens of the present invention.

The invention provides a contact lens internal arc polishing device, which comprises a polishing body, a polishing portion and an abrasive cloth. Wherein, the polishing body is a hollow columnar body. The polishing portion has a head portion and a root portion, the head portion corresponding to the inner arc shape of the contact lens, and the root portion is disposed in the hollow column of the polishing body, and the polishing portion is made of rubber, nylon, tetrafluoroethylene, acetaminophen or poly Made of vinyl oxime, the hardness is between 15% and 90% of the contact lens, and the abrasive cloth is coated on the outer side of the head of the polishing portion, and one end is further provided with a groove and an elastic ring. The abrasive cloth is tightly covered by the elastic ring at the opposite groove portion and tightened at the position of the groove.

The contact lens is a Rigid Gas-Permeable (RGP) corrected vision contact lens and a hard oxygen permeable corneal contact lens. Its hardness is between Rockwell R hardness 110~130, or Shore D hardness 80~100.

Among them, the hardness of the polishing portion is between 16 to 99 Rockwell hardness, or between 12 and 70 Shore hardness.

Wherein, the contact lens is a vision-corrected contact lens, and the vision-corrected contact lens sequentially extends from the central axis to the edge symmetrically by a base curve and a front curve to form the vision-corrected contact lens. The shape of the interior.

The contact lens is a corneal contact lens, and the contact lens of the cornea is symmetrically extended from the central axis to the edge to return to the Back Optic Zone Base Curve and the Fitting Curve. The Alignment Curve and the Peripheral Curve form the shape of the inside of the contact lens shaped by the cornea, wherein the curved surface of the arc of the side arc Contrary to the extension of the viewing zone base arc, reverse arc and parallel arc.

The invention further provides a method for manufacturing a polishing portion of a contact lens internal arc polishing device, the method comprising the steps of: first providing a mold, the mold is provided with a perforation, and a first groove coaxial with the perforation is provided on one side. Providing a contact lens blank mold having a shape conforming to the first groove, the contact lens blank mold having a circular arc surface facing the first groove side, and the arc curved surface shape corresponding to the inner arc shape of the contact lens. Thereafter, the raw material of the polishing portion is injected into the mold from the perforation, and is solidified and formed to form a polishing portion having a hardness between 15 and 90% of the contact lens, wherein the polishing portion includes the head and the root, one of the heads The side shape conforms to the arcuate surface of the contact lens blank, the root extends on the other side of the head, and the root shape conforms to the hollow portion of a polished body.

In the above method for manufacturing the polishing portion, the mold is further provided with a second groove concentric with the through hole between the perforation and the first groove, so that a shoulder is formed between the head portion and the root portion of the formed polishing portion. unit.

The invention provides a method for polishing an inner arc of a contact lens, the method comprising the steps of: firstly, setting a polishing body on a rotating shaft, wherein one end of the polishing body is provided with a polishing portion having a hardness between 15 and 90% of the contact lens. The polishing portion includes a head portion conforming to the shape of the inner arc of the contact lens, and a portion extending from the other end side, the root portion being insertable in the hollow column body provided in the polishing body. Finally, the polishing portion is covered with the abrasive cloth, and the polished portion of the coated abrasive cloth is applied against the arc of the contact lens, and the arcs of the contact lens are simultaneously polished.

In summary, for the polishing method of the vision-corrected contact lens, the conventional vision-corrected contact lens needs to be replaced with the polishing portion multiple times to polish the arc. In addition, in the case of the polishing method of the contact lens of the cornea, the conventional contact lens of the corneal shape cannot be polished at all. The polishing portion of the present invention has softness and elasticity, and can be used once. At the same time, the arcs of the vision-corrected contact lens or the corneal-shaped contact lens are polished, the polishing step and time are shortened, and the problem of the conventional contact lens polishing method is solved.

I‧‧‧ eyeball

II‧‧‧ base arc

III‧‧‧Reversal arc

IV‧‧‧Parallel arc

1‧‧‧ polishing subject

2‧‧‧ Polishing Department

3‧‧‧Abrasive fabric

4‧‧‧Molding

5‧‧‧ Vision corrected contact lens embryo

6‧‧‧Cornea-shaped contact lens embryo

7‧‧‧Rotary axis

11‧‧‧ Groove

12‧‧‧Flexible ring

21‧‧‧ head

22‧‧‧ Root

23‧‧‧ Shoulder

41‧‧‧Perforation

42‧‧‧First groove

43‧‧‧second groove

51‧‧‧Arc surface

52‧‧‧Arc surface

Figure 1 is a schematic illustration of a conventional vision correction contact lens.

Figure 2 is a schematic view of a conventional Orthokeratology contact lens.

Figure 3 is a schematic view of the inner arc polishing device for contact lenses of the present invention.

Figure 4 is a schematic view of the polishing portion of the present invention.

Fig. 5A is a schematic view of a mold of the present invention.

Fig. 5B is a schematic view of a mold of the present invention.

Figure 5C is a schematic view of the polishing portion of the present invention.

Figure 6A is a schematic view of another mold of the present invention.

Figure 6B is a schematic view of another mold of the present invention.

Figure 6C is a schematic view of another polishing portion of the present invention.

Figure 7 is a schematic view of the inner arc polishing device and the rotating shaft of the contact lens of the present invention.

The technical features, contents, and advantages of the present invention, as well as the advantages thereof, can be understood by the reviewing committee, and the present invention will be described in detail with reference to the accompanying drawings. The subject matter is only for the purpose of illustration and description. It is not intended to be a true proportion and precise configuration after the implementation of the present invention. Therefore, the scope and configuration relationship of the attached drawings should not be interpreted or limited. First described.

Referring to FIG. 3, a schematic view of the inner arc polishing device for a contact lens of the present invention includes a polishing body 1, a polishing portion 2, and a polishing cloth 3. The polishing body 1 is a hollow columnar body. The polishing portion 2 is made of rubber, nylon, tetrafluoroethylene, acetaminophen or polyvinyl siloxane, and the hardness of the polishing portion 2 is between 15 and 90% of the contact lens. The polishing portion 2 has a head portion 21 corresponding to the inner arc shape of the contact lens, the root portion 22 is disposed in the hollow column of the polishing body 1, and the abrasive cloth 3 of the polishing portion 2 is coated on the polishing portion. 2 outside the head 21 .

Contact lenses are hard oxygen-permeable corrected vision contact lenses and hard oxygen-permeable corneal contact lenses. Its hardness is between Rockwell R hardness 110~130, or Shore D hardness 80~100.

Among them, the hardness of the polishing portion is between 16 to 99 Rockwell hardness, or between 12 and 70 Shore hardness.

Please refer to FIG. 3 and FIG. 4 , wherein the polishing body 1 is disposed at one end side edge and is adjacent to one end of the coated abrasive cloth 3 and further has a groove 11 and an elastic ring 12 , and the abrasive cloth 3 is placed by the elastic ring 12 . The portion of the groove 11 is tightly covered and tightly clamped at the position of the groove 11.

Please refer to FIGS. 5A-5C , which are schematic views of a manufacturing method of the polishing portion 2 of the internal arc polishing device for a contact lens according to the present invention. The steps include: first, as shown in FIG. 5A, a mold 4 is provided, and the mold 4 is provided. There is a through hole 41, and a first groove 42 concentric with the through hole 41 is provided on one side. Next, a contact lens blank 5 conforming to one of the shapes of the first groove 42 is provided. As shown in FIG. 5B, the vision-corrected contact lens blank 5 is oriented toward the first groove 42 as a circular curved surface 51. The arcuate curved surface 51 has an inner arc shape corresponding to the contact lens for vision correction. Finally, the raw material of the polishing portion 2 is injected into the mold 4 from the through hole 41, and is solidified and formed to form a polishing portion 2 having a hardness between 15 and 90% of the contact lens, as shown in FIG. 5C, wherein the polishing is performed. Department 2 A head portion 21 is included. One side of the head portion 21 conforms to the shape of the arcuate curved surface 51. The other side of the head portion 21 extends a portion 22 which conforms to the hollow portion of the polishing body 1.

Please refer to FIGS. 6A-6C for a schematic view of a method for manufacturing the polishing portion 2 of the internal arc polishing device for a contact lens according to the present invention. The steps include: first, as shown in FIG. 6A, a mold 4 is provided, and the mold 4 is provided. There is a through hole 41, and a first groove 42 coaxial with the through hole 41 is disposed on one side of the hole 41. The mold 4 further defines a second groove 43 concentric with the through hole 41 between the through hole 41 and the first groove 42. Next, a contact lens blank mold 6 conforming to one of the shapes of the first groove 42 is provided. As shown in FIG. 6B, the contact lens preform 6 of the corneal shape is oriented toward the side of the first groove 42. The curved surface 61 has an arc shape corresponding to the inner arc of the contact lens corresponding to the Orthokeratology. Finally, the raw material of the polishing portion 2 is injected into the mold 4 from the through hole 41, and is solidified and formed to form a polishing portion 2 having a hardness between 15 and 90% of the contact lens, as shown in Fig. 6C, wherein the polishing is performed. The portion 2 includes a head portion 21 having a side surface conforming to the shape of the curved surface 62, and the other side of the head portion 21 extending a portion 22 conforming to the hollow portion of the polishing body 1, wherein A shoulder portion 23 is formed between the head portion 21 of the polishing portion 2 and the root portion 22.

Referring to FIG. 7 again, the present invention provides a method for polishing an inner arc of a contact lens, the method comprising the steps of: firstly, a polishing body 1 is disposed on a rotating shaft 7, and one end of the polishing body 1 is provided with a hardness between the contact lenses. The polishing portion between 15 and 90% is applied to the polished contact lens, and the polishing portion 2 corresponding to the inner arc shape of the contact lens is maintained during polishing, and the root portion 22 of the polishing portion 2 can be inserted into the polishing body 1 in the hollow cylindrical body. Finally, the polishing portion 2 is covered with the abrasive cloth 3, and the polished portion of the coated abrasive cloth is applied against the arc of the contact lens, and the arcs of the contact lens are simultaneously polished.

Compared with the prior art, the general polishing technique requires replacement of the polishing portion to cause a contact lens. The inner surface of the mirror is uneven or contact, which causes the wearer to feel uncomfortable. The polishing portion of the present invention has soft and elastic characteristics, and the method of the present invention can simultaneously simultaneously correct vision contact lenses or corneas. Each arc of the contact lens is polished, shortening the polishing step and time, and solving the problem of the conventional contact lens polishing method.

The above-mentioned embodiments are intended to be illustrative only and not to limit the scope of the present invention. Any equivalent modifications and changes thereto are not included in the spirit and scope of the present invention. In the scope.

1‧‧‧ polishing subject

2‧‧‧ Polishing Department

3‧‧‧Abrasive fabric

11‧‧‧ Groove

21‧‧‧ head

22‧‧‧ Root

Claims (12)

A contact lens internal arc polishing device comprises: a polishing body, which is a hollow columnar body; a polishing portion, a head portion of the polishing portion corresponding to an inner arc shape of the contact lens, and one of the polishing portions The polishing part is disposed in the hollow column of the polishing body, and the polishing part has elasticity, ductility and plasticity, and the hardness is between 15% and 90% of the contact lens, and is applied to the polished contact lens, and is still used for polishing. Maintaining an inner arc shape of the corresponding contact lens; and an abrasive cloth covering the outside of the head of the polishing portion. The contact lens internal arc polishing device according to claim 1, wherein the polishing portion is made of rubber, nylon, tetrafluoroethylene, acetaminophen or polyvinyl siloxane. The contact lens internal arc polishing device according to claim 1, wherein the polishing body is provided with a groove and an elastic ring at one end side edge of the one end of the polishing cloth. The abrasive cloth is tightly wrapped around the groove portion and tightened at the position of the groove. The contact lens internal arc polishing device according to claim 1, wherein the contact lens is a vision-corrected contact lens, and the vision-corrected contact lens extends a base arc symmetrically from the central axis to the edge. A front arc forms the shape of the interior of the vision corrected contact lens. The contact lens internal arc polishing device according to claim 1, wherein the contact lens is a keratoplasty contact lens, and the contact lens is symmetrically extended from the central axis to the edge. The base arc, the reverse arc, the parallel arc and the side arc form the shape of the inner shape of the contact lens, wherein the curved surface of the arc is opposite to the base arc, the reverse arc and the parallel arc extending back to the viewing zone. . A method for manufacturing a polishing portion of a contact lens internal arc polishing device, comprising the steps of: providing a mold, the mold having a perforation, and providing a first groove concentric with the perforation on one side; providing the first concave a contact lens shaping mold, the contact lens blank mold facing the first groove side is a circular arc surface, the arc curved surface corresponding to the inner arc shape of the contact lens; the polishing portion is to be polished by the perforation The raw material is injected into the mold and solidified to form a polishing portion having a hardness between 15 and 90% of the contact lens, wherein the polishing portion includes a head portion, one side of the head and the curved surface shape Consistently, the other side of the head extends a portion that conforms to the hollow portion of a polished body. The method for manufacturing a polishing portion of a contact lens internal arc polishing device according to claim 6, wherein the contact lens is a vision-corrected contact lens, and the vision-corrected contact lens is sequentially aligned from the central axis to the edge. Symmetrically extending a base arc and a front arc form the shape of the interior of the vision corrected contact lens. The method for manufacturing a polishing portion of a contact lens internal arc polishing device according to claim 6, wherein the contact lens is a keratoplasty contact lens, and the contact lens of the cornea is from the central axis to the edge. The base curve, the reverse arc, the parallel arc and the side arc of the back view region are symmetrically extended to form the shape of the inner shape of the contact lens of the cornea, wherein the curved surface of the arc is opposite to the base arc of the viewing region. Reverse arcs and parallel arcs. The method of manufacturing a polishing portion for a contact lens internal arc polishing device according to claim 6, wherein the mold is further provided with a second groove concentric with the through hole between the through hole and the first groove. a shoulder portion is formed between the head portion of the polishing portion formed and the root portion. A contact lens internal arc polishing method, the steps comprising: A polishing body is disposed on a rotating shaft, and one end of the polishing body is provided with a polishing portion having a hardness between 15 and 90% of the contact lens and is applied to the polished contact lens, and the corresponding invisible shape is maintained during polishing. The inner arc shape of the lens, the polishing portion includes a head portion corresponding to the inner arc shape of the contact lens, and the other side of the head portion extends out a portion which is inserted into the hollow column body provided in the polishing body And the polishing portion is applied to the arc of the contact lens; and the polishing portion is covered with a polishing cloth, and the arcs of the contact lens are simultaneously polished. The contact lens internal arc polishing method according to claim 10, wherein the contact lens is a vision-corrected contact lens, and the vision-corrected contact lens extends a base arc symmetrically from the central axis to the edge. A front arc forms the shape of the interior of the vision corrected contact lens. The contact lens internal arc polishing method according to claim 10, wherein the contact lens is a keratoplasty contact lens, and the contact lens is extended symmetrically from the central axis to the edge. The base arc, the reverse arc, the parallel arc and the side arc form the shape of the inner shape of the contact lens, wherein the curved surface of the arc is opposite to the base arc, the reverse arc and the parallel arc extending back to the viewing zone. .