WO2016098951A1

WO2016098951A1 - Device for processing contact lens micro-hole

Info

Publication number: WO2016098951A1
Application number: PCT/KR2015/002231
Authority: WO
Inventors: 김연삼
Original assignee: 김연삼
Priority date: 2014-12-16
Filing date: 2015-03-09
Publication date: 2016-06-23
Also published as: KR101522409B1

Abstract

The present invention relates to a device for processing a contact lens micro-hole, the device having advantages of enabling the improvement of productivity and the reduction of power consumption by forming a plurality of air flow holes in one contact lens without moving a laser oscillator or a contact lens stand, and enabling high air permeability of the contact lens by processing a plurality of smaller-sized air flow holes.

Description

Contact Lens Micro Hole Processing Equipment

The present invention relates to an apparatus for processing a plurality of micro holes in a contact lens using a laser, and more particularly, a plurality of micro holes are added to each part of the contact lens even if the laser oscillator or the contact lens holder is not moved. The present invention relates to a contact lens microhole processing apparatus that can be processed quickly and finely.

In general, a contact lens is used to contact the lens to the front of the eyeball to obtain good vision, and is limited to the corneal sclera lens and cornea attached to the cornea and sclera. There are corneal lenses, and corneal lenses are mainly used except in special cases.

Although contact lenses were first made of glass, they were prone to breakage and had a high risk, and they were widely used due to the development of plastic industry after World War II. Today, they are made of safe acrylic resins and mixtures.

The above-described contact lenses are classified into hard lenses and shaft lenses according to materials and hardness.

Hard lenses, which are being manufactured recently, are harder than soft lenses, have high stability, relatively high oxygen transmission rate, move up and down on the cornea to some extent, and provide tear oxygen between cornea and lens to supply oxygen to the cornea. Soft lenses are softly deformed to conform to the shape of the cornea. Compared to hard lenses, soft lenses have less foreign body feeling or pressure on the cornea when they are in contact with the eye.

In addition, contact lenses are classified into daily wear lenses, continuous wear lenses, and disposable lenses according to wear time.According to the purpose and method of use, contact lenses include refractive error correction lenses, astigmatism lenses, presbyopia lenses, beauty color soft lenses, beauty iris soft There are various types of lenses such as lenses, corneal revision lenses, and sun protection lenses.

However, all these lenses are different in degree, but they block the oxygen supply to the cornea, causing hypoxia of the cornea. Therefore, corneal erosion, corneal ulceration, corneal abrasion and severe perforation of the cornea can cause blindness. There will be side effects. In recent years, efforts to reduce such side effects by using materials with high oxygen permeability have been racing.

Recently, among young people, beauty color soft lenses that have been specially treated by putting colors on the surface or inside of general contact lenses are recognized and widely worn as fashion items, and the demand for such beauty color soft lenses is expected to increase gradually. have.

However, even though cosmetic color soft lenses are manufactured using high oxygen-permeable materials, the oxygen permeability is significantly lowered than the soft lenses for vision correction due to pigments coated on the lenses. Thus, keratitis, corneal ulcers, etc. are only available for a short time. There is a high risk of causing serious complications. People with severe dry eye or allergic eye diseases such as allergic conjunctivitis are more restricted.

In order to solve this problem, a 'contact lens through-hole processing apparatus' (Korea Republic Patent No. 10-1272839) has been provided to form a plurality of through-holes on the lens using a laser. The contact lens vent processing device has the advantage that the productivity can be very high because it can not only form a minute size vent in the lens, but also automate the formation of the vent.

In this case, in order to form a plurality of vent holes in one contact lens, the contact lens holder is fixed and the laser oscillator is moved in the horizontal and vertical directions while forming a plurality of vent holes in the contact lens, or the laser oscillator is fixed A method of forming a plurality of ventilation holes in the contact lens while moving the contact lens holder in the horizontal and vertical directions.

However, since there is a limit in finely adjusting the moving distance of the contact lens holder or the laser oscillator as described above, it is difficult to process a plurality of vent holes in the contact lens in a predetermined pattern. In addition, since the contact lens holder or the laser oscillator is generally set to have a weight greater than or equal to the reference value, there is a disadvantage that a lot of time and energy is consumed when processing a plurality of ventilation holes in the contact lens.

In addition, in order to evenly form the oxygen transmittance for each part of the contact lens, as much as possible to form a smaller size of the ventilation hole, there is a problem that there is a limit in reducing the size of the ventilation hole using a conventional laser oscillator.

[Preceding technical literature]

(Patent Document 0001) KR 10-1272839 B1

The present invention has been proposed to solve the above problems, it is possible to form a plurality of ventilation holes in one contact lens without moving the laser oscillator or contact lens cradle, excellent productivity and low power consumption, It is an object of the present invention to provide a contact lens microhole processing apparatus capable of processing a smaller size of the ventilation hole.

Contact lens microhole processing apparatus according to the present invention for achieving the above object, the laser oscillator; A lens holder to which the contact lens is fixed; A first reflector configured to reflect the laser beam output from the laser oscillator and to adjust a direction in which the laser beam is reflected in an X-axis direction; A second reflector configured to reflect the laser beam reflected by the first reflector to the contact lens, and adjust the direction in which the laser beam is reflected in the Y-axis direction; And a condenser lens for condensing a laser beam delivered to the contact lens to form micro holes in the contact lens.

The first reflector is configured to be bidirectionally rotated about a rotation axis in a direction orthogonal to the X axis, and the second reflector is configured to be bidirectionally rotated about a rotation axis in a direction orthogonal to the Y axis, And a first driver for rotating the first reflector and a second driver for rotating the second reflector.

The electronic device may further include a controller configured to automatically control operations of the first driver and the second driver such that a plurality of micro holes are formed in a predetermined pattern in the contact lens fixed to the lens holder.

And an expander mounted between the laser oscillator and the first reflector to amplify the diameter of the laser beam output from the laser oscillator.

The first reflector is located on a laser beam output line of the laser oscillator, and the second reflector and the lens holder are located on a parallel line parallel to the laser beam output line of the laser oscillator.

And a refractive lens mounted between the condenser lens and the lens holder to maintain a constant angle of incidence of the laser beam applied to the lens holder even when the irradiation angle of the laser beam passing through the condenser lens is changed.

The display device may further include a housing in which the first reflecting mirror, the second reflecting mirror, the condenser lens, and the lens holder are mounted therein.

It further comprises a mounting portion having a horizontal mounting plate on which the laser oscillator is seated on an upper surface, and a vertical mounting plate vertically erected from the horizontal mounting plate to which the housing is coupled to one side.

By using the contact lens microhole processing apparatus according to the present invention, it is possible to form a plurality of ventilation holes in one contact lens without moving the laser oscillator or contact lens holder, thereby improving productivity as well as power consumption. It is possible to reduce, and to process a plurality of smaller size air vents to increase the ventilation of the contact lens.

1 is a perspective view of a contact lens microhole processing apparatus according to the present invention.

2 is a side view of a contact lens microhole processing apparatus according to the present invention.

3 is a vertical sectional view showing a laser beam path of a contact lens microhole processing apparatus according to the present invention.

4 and 5 are diagrams illustrating the use state of the first reflector and the second reflector for adjusting the laser beam path.

6 and 7 are vertical cross-sectional views showing an incidence path of a laser beam for forming micro holes in a contact lens.

The present invention laser oscillator 300; A lens holder 540 to which the contact lens 10 is fixed; A first reflector (510) configured to reflect the laser beam output from the laser oscillator (300) and to adjust the direction in which the laser beam is reflected in the X-axis direction; A second reflector 520 configured to reflect the laser beam reflected by the first reflector 510 to the contact lens 10 and to adjust a direction in which the laser beam is reflected in the Y-axis direction; And a condenser lens 530 configured to condense the laser beam transmitted to the contact lens 10 to form the micro holes 12 in the contact lens 10.

Hereinafter, an embodiment of a contact lens microhole processing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a contact lens microhole processing apparatus according to the present invention, FIG. 2 is a side view of a contact lens microhole processing apparatus according to the present invention, and FIG. 3 is a laser beam of the contact lens microhole processing apparatus according to the present invention. 4 and 5 are diagrams illustrating a state of use of the first reflector and the second reflector for adjusting the laser beam path.

In the contact lens microhole processing apparatus according to the present invention, the contact lens 10 includes a plurality of microholes 12 serving as vent holes so that external oxygen can pass through the contact lens 10 and be delivered to the eyeball of the user. As an apparatus for forming a dog, the laser oscillator 300 for generating a laser beam may be classified into a lens processing unit 500 in which the micro holes 12 are formed in the contact lens 10 by the laser beam. . The laser beam output from the laser oscillator 300 is introduced into the lens processing unit 500 to form the micro holes 12 in the contact lens 10 seated on the lens holder 540.

In this case, the conventional contact lens 10 through-hole processing apparatus moves the lens holder 540 in the X-axis and Y-axis directions so that vent holes are formed in each portion of the contact lens 10, and the lens holder 540 It is substantially difficult to control the feeding distance of the micrometer unit, there is a problem that it is difficult to finely adjust the position of the vent hole on the contact lens (10). In particular, when the size of the lens holder 540 is large, the motor and gear for transferring the lens holder 540 also need to be large, and there is a problem that fine adjustment of the feeding distance of the lens holder 540 becomes more difficult. In addition, in order to transport the lens holder 540 in the X-axis and Y-axis directions, an X-axis feed rail and a Y-axis feed rail must be provided, respectively, and the internal structure of the contact lens processing apparatus 10 becomes complicated. Rather, a disadvantage arises in that the overall size of the device becomes large.

In the contact lens microhole processing apparatus according to the present invention, the first reflector 510 and the second reflector 520 reflecting the laser beam output from the laser oscillator 300 toward the lens holder 540 so as to solve such a problem. ), Wherein the first reflector 510 and the second reflector 520 are configured to adjust the laser beam reflection directions left and right and up and down. That is, the first reflector 510 is configured to be rotatable about a rotation axis projecting in the vertical direction as shown in FIG. 4, so that the direction in which the laser beam is reflected can be adjusted in the X-axis direction, and the second As shown in FIG. 5, the reflector 520 is rotatable around a rotational axis projecting in the left and right directions to adjust the reflection direction of the laser beam received from the first reflector 510 in the Y-axis direction.

Accordingly, the user can freely adjust the laser beam irradiation direction toward the lens holder 540 by appropriately adjusting the rotation direction and the rotation angle of the first reflector 510 and the second reflector 520, and accordingly the lens holder 540. The micro holes 12 can be formed in all regions of the contact lens 10 fixedly mounted to the < RTI ID = 0.0 >

As described above, the contact lens microhole processing apparatus according to the present invention can process the microholes 12 in all regions of the contact lens 10 even if the lens holder 540 is not moved in the vertical and horizontal directions. Since the separate transport rail for transporting the holder 540 can be omitted, the internal structure of the device is very simple and the device can be miniaturized. In addition, it is easier to precisely control the rotation angles of the first reflector 510 and the second reflector 520 than to accurately control the transport distance of the lens holder 540. In this case, the micro holes 12 for oxygen transmission can be formed at the correct position, and the power required to rotate the first reflector 510 or the second reflector 520 is required to transfer the lens holder 540. Since it is significantly smaller than the power, there is an advantage that can reduce the cost required for processing the contact lens 10.

Meanwhile, the first reflecting mirror 510 has a structure capable of bidirectional rotation about a rotation axis perpendicular to the X axis so as to set the position of the micro holes 12 formed in the contact lens 10 in the X axis direction. The second reflector 520 is configured to bidirectionally rotate around a rotation axis in a direction orthogonal to the Y axis so as to set the position of the micro holes 12 formed in the contact lens 10 in the Y axis direction. It consists of. In this case, the first reflector 510 and the second reflector 520 may be configured to be adjusted by the user manually, in this case, the angle of the first reflector 510 and the second reflector 520 There is a limit to fine and precise adjustment, there is a problem that the productivity can be reduced because the manufacturing process of the contact lens 10 can not be automated.

Accordingly, the contact lens microhole processing apparatus according to the present invention includes a first driver 512 for rotating the first reflector 510, a second driver 522 for rotating the second reflector 520, and the second driver. A control unit (not shown) for automatically controlling the operations of the first driver 512 and the second driver 522 may be included. As such, when the first driving unit 512, the second driving unit 522, and the control unit are additionally provided, the angles of the first reflecting mirror 510 and the second reflecting mirror 520 can be adjusted very finely so that the contact lens 10 can be adjusted. ) Can accurately form a plurality of fine holes 12 in a preset pattern, and can automate the process of forming the fine holes 12 in the contact lens 10, thereby significantly increasing productivity. . In addition, since the time required to rotate the first reflector 510 and the second reflector 520 is significantly shorter than the time required to transport the lens holder 540, the contact lens 10 productivity may be further improved. .

In this case, the first driving unit 512 and the second driving unit 522 may be configured to include a motor and a reduction gear to rotate the rotating shaft of the first reflecting mirror 510 and the rotating shaft of the second reflecting mirror 520. Alternatively, the linear motor may be configured to directly press and rotate one side of the first reflector 510 and the second reflector 520. That is, the first driving unit 512 and the second driving unit 522 may have any structure as long as the first reflecting mirror 510 and the second reflecting mirror 520 can be selectively rotated clockwise and counterclockwise. Can be.

On the other hand, since the diameter of the fine hole 12 to be formed in the contact lens 10 is significantly smaller than the diameter of the laser beam output from the laser oscillator 300, the laser beam output from the laser oscillator 300 is focused After the diameter becomes very small through the lens 530, it is applied to the contact lens 10. In this case, as the diameter of the laser beam transmitted to the condenser lens 530 is larger, the diameter of the micro holes 12 formed in the contact lens 10 may be reduced, and the laser beam output from the laser oscillator 300 may be processed. Since the diameter is always constant, the diameter of the laser beam transmitted to the condenser lens 530 cannot be increased. Of course, by changing the specifications and specifications of the laser oscillator 300 can increase the diameter of the laser beam output, there is a problem in that it takes a lot of cost to manufacture a new laser oscillator 300.

Therefore, the contact lens microhole processing apparatus according to the present invention includes an expander 400 mounted between the laser oscillator 300 and the first reflector 510 to amplify the diameter of the laser beam output from the laser oscillator 300. It may further include. As such, when the expander 400 is additionally provided, even if the same laser oscillator 300 is used, the diameter of the laser beam transmitted to the condenser lens 530 may be increased, and thus, the smaller size of the contact lens 10 may be reduced. The hole 12 may be formed, and thus, the transmittance of each part of the contact lens 10 may be uniform. As described above, since the expander 400 for amplifying the diameter of the laser beam is an optical device widely used in the art, the detailed description thereof will be omitted.

The first reflector 510, the second reflector 520, the condenser lens 530, and the lens holder 540 are all mounted in one housing 502. The path of the laser beam irradiated from the laser oscillator 300 to the first reflector 510 and the path of the laser beam irradiated from the second reflector 520 to the lens holder 540 may be parallel to each other so that miniaturization of. It is preferred to arrange. That is, the first reflector 510 is positioned on the laser beam output line of the laser oscillator 300, and the second reflector 520 and the lens holder 540 are parallel to the laser beam output line of the laser oscillator 300. It is preferred to be located on parallel lines.

When the path of the laser beam irradiated from the laser oscillator 300 to the first reflector 510 and the path of the laser beam irradiated from the second reflector 520 to the lens holder 540 are arranged in parallel, the housing ( Since the height of the 502 can be minimized, there is an advantage that the size of the apparatus for processing the micro contact hole 12 can be reduced.

On the other hand, the contact lens microhole processing apparatus according to the present invention is installed on the base 100 to be located at a predetermined height from the ground, wherein the laser beam irradiation direction of the laser oscillator 300 is horizontal and the second reflector ( The laser oscillator 300 and the housing 502 are preferably mounted on one mounting portion 200 so that the arrangement direction of the 520 and the lens holder 540 may also be horizontal. The mounting portion 200 is extended so that the longitudinal direction is horizontal, the horizontal support plate 210 and the horizontal oscillator 300 is mounted on the upper surface, and vertically erected from the horizontal support plate 210 on one side It comprises a vertical mounting plate 220 to which the housing 502 is coupled.

As described above, when the laser oscillator 300 is mounted on the horizontal mounting plate 210 and the housing 502 of the lens processing unit 500 is mounted on the vertical mounting plate 220, the laser oscillator 300 and the housing 502. Even if the arrangement angle of the laser beam generator 300 is not parallel to the laser beam output direction and the laser beam irradiation direction to the contact lens 10 is set in parallel, the installation of the contact lens microhole processing apparatus according to the present invention It has the advantage of being very easy.

6 and 7 are vertical cross-sectional views showing the incidence path of the laser beam for forming the fine holes 12 in the contact lens 10.

As shown in FIG. 3, the laser beam reflected by the second reflector 520 is irradiated to the contact lens 10 through the condenser lens 530, which condenses the laser beam as a single point. It only plays a role of collecting and does not change the irradiation direction of the laser beam. Therefore, the laser beam irradiated onto the contact lens 10 is directed toward the center portion, the upper portion, and the lower portion of the contact lens 10 as shown in FIG. 6 according to the angle of the second reflector 520. At this time, the laser beam irradiation direction toward the center portion of the contact lens 10 is horizontal, but the laser beam irradiation direction toward the upper portion of the contact lens 10 and the laser beam irradiation toward the lower portion of the contact lens 10. Since the direction has a minute inclination angle, the inner diameter of the fine holes 12 formed on the upper side and the lower side of the contact lens 10 forms an ellipse.

As mentioned above, the smaller the diameter of the fine holes 12 formed in the contact lens 10 is, the better the quality of the contact lens 10 is. As shown in FIG. 6, the fine holes 12 have an elliptical shape. If formed, there is a disadvantage that the cross-sectional area of the fine holes 12 is widened. Therefore, the contact lens microhole processing apparatus according to the present invention maintains the incident angle of the laser beam on the lens holder 540 side even if the irradiation angle of the laser beam passing through the condenser lens 530 is different for each part, that is, the laser beam. A refractive lens 550 may be additionally provided between the condenser lens 530 and the lens holder 540 to be incident only in the horizontal direction.

As shown in FIG. 7, the refractive lens 550 applies a laser beam (more specifically, a laser beam incident in a horizontal direction) applied to the center portion of the refractive lens 550 without being refracted to the lens holder 540. The laser beam inclined to the edge portion is refracted at a predetermined angle to face the horizontal direction and then applied to the lens holder 540. The microlenses 12 are always formed in the contact lens 10 in the horizontal direction. . That is, all of the micro holes 12 formed in the contact lens 10 have a circular cross section, regardless of which part of the contact lens 10 is formed, the cross-sectional area of the micro holes 12 is the contact lens 10. The phenomenon of non-uniformity can be prevented for each part, and accordingly, the oxygen transmittance for each part of the contact lens 10 can be made uniform.

In this case, as shown in FIG. 7, even if the incident angle of the irradiated light is different for each part, the refraction lens 550 for refracting the irradiated light to have the same transmission angle for each part is a lens commercially available in the optical field. Detailed description thereof will be omitted.

As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to a specific Example and should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

The present invention can be used in the field of contact lens microhole processing.

Claims

Laser oscillator 300;

A lens holder 540 to which the contact lens 10 is fixed;

A first reflector (510) configured to reflect the laser beam output from the laser oscillator (300) and to adjust the direction in which the laser beam is reflected in the X-axis direction;

A second reflector 520 configured to reflect the laser beam reflected by the first reflector 510 to the contact lens 10 and to adjust a direction in which the laser beam is reflected in the Y-axis direction; And

A condenser lens 530 for condensing a laser beam transmitted to the contact lens 10 to form a micro hole 12 in the contact lens 10;

Contact lens microhole processing apparatus comprising a.
The method according to claim 1,

The first reflector 510 is configured to be bidirectionally rotated about a rotation axis perpendicular to the X axis, and the second reflector 520 is bidirectionally rotated about a rotation axis perpendicular to the Y axis. Is configured to be

The contact lens microhole processing apparatus of claim 1, further comprising a first driver 512 for rotating the first reflector 510 and a second driver 522 for rotating the second reflector 520.
The method according to claim 2,

The operation of the first driver 512 and the second driver 522 is automatically performed so that the plurality of micro holes 12 are formed in a predetermined pattern in the contact lens 10 fixed to the lens holder 540. Contact lens micro-hole processing apparatus further comprises a control unit for controlling.
The method according to claim 1,

Contact lens fine, characterized in that further comprising an expander 400 mounted between the laser oscillator 300 and the first reflector 510, amplifying the diameter of the laser beam output from the laser oscillator 300 Hole processing equipment.
The method according to claim 1,

The first reflector 510 is positioned on the laser beam output line of the laser oscillator 300,

The second reflector 520 and the lens holder 540 are positioned on a parallel line parallel to the laser beam output line of the laser oscillator (300).
The method according to claim 1,

Mounted between the condenser lens 530 and the lens holder 540, even if the irradiation angle of the laser beam passing through the condenser lens 530 is changed, the incident angle of the laser beam applied to the lens holder 540 is fixed. Contact lens microhole processing apparatus further comprises a refractive lens 550 to be maintained.
The method according to claim 1,

And a housing 502 in which the first reflector 510, the second reflector 520, the condenser lens 530, and the lens holder 540 are mounted therein. Lens microhole processing equipment.
The method according to claim 7,

A horizontal mounting plate 210 on which the laser oscillator 300 is seated on an upper surface thereof, and a vertical mounting plate 220 which is erected vertically from the horizontal mounting plate 210 so that the housing 502 is coupled to one side thereof. Contact lens microhole processing apparatus, characterized in that it further comprises a mounting portion (200).