KR20200033217A - Method for manufacturing a lens - Google Patents

Abstract

The present invention relates to a method for manufacturing a lens. The method for manufacturing the lens comprises the steps of: injecting a curable resin; moving at least one of an upper mold unit and a lower mold unit so that the upper mold unit and the lower mold unit come into contact with each other; initiating curing of the curable resin; moving the upper mold unit by the predetermined distance in the first direction in which the upper mold unit is located; and pressing the curable resin through the upper mold unit in conjunction with repeatedly vibrating the upper mold unit in the first direction and the second direction opposite to the first direction.

Description

Method of manufacturing lenses {METHOD FOR MANUFACTURING A LENS}

The present disclosure relates to a method for manufacturing a lens, and specifically, a method for compensating for curing shrinkage that occurs when manufacturing a lens by refilling a curable resin overflowed in a lens manufacturing process and preventing a release inability phenomenon It is about.

When curing the curable resin in the process of manufacturing the lens, the viscosity of the curable resin may be lowered. When the viscosity of the curable resin is lowered, a part of the liquid may flow out of the mold for manufacturing the lens. In addition, when the curable resin, which is a lens forming liquid, is pressed through the lens manufacturing mold, a part of the curable resin may flow out of the lens manufacturing mold.

As described above, when a part of the curable resin flows from the inside of the lens manufacturing mold to the outside, an empty space may be generated inside the lens manufacturing mold. When an empty space is formed inside the lens manufacturing mold, a vacuum may be generated, and the lens manufacturing mold and the manufactured lens may be strongly attached.

In addition, an empty space may be generated inside the mold for manufacturing a lens by shrinking in the process of curing the curable resin. When an empty space is formed inside the lens manufacturing mold, a vacuum may be generated, and the lens manufacturing mold and the manufactured lens may be strongly attached.

Therefore, a release inability phenomenon in which the cured lens is not separated from the lens manufacturing mold may occur.

Accordingly, there is an urgent need to develop a lens manufacturing apparatus that solves the problems of the prior art and a method of manufacturing a lens using the lens.

Korea Patent Publication 10-2011-0088543

The present disclosure has been devised in correspondence with the above-described background technology, and a lens manufacturing apparatus and a manufacturing apparatus for the lens to compensate for the curing shrinkage caused by the overflow of the lens molding liquid in the process of manufacturing the lens and to prevent the phenomenon of mold release It is intended to provide a method of manufacturing a lens.

The technical problems of the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

A method of manufacturing a lens according to some embodiments of the present disclosure for solving the problems as described above comprises: injecting a curable resin; Moving at least one of the upper mold unit and the lower mold unit so that the upper mold unit and the lower mold unit come into contact with each other; Starting the curing of the curable resin; Moving the upper mold unit by a predetermined distance in a first direction in which the upper mold unit is located; And pressing the curable resin through the upper mold unit in conjunction with repeatedly vibrating the upper mold unit in the first direction and the second direction opposite to the first direction. It may include.

According to an alternative embodiment of the present disclosure, the step of starting the curing of the curable resin further includes the step of starting to irradiate light to the curable resin using a light source provided in the lower mold unit, the lower part The mold unit is formed of a transparent material, and the curable resin may be a photocurable resin.

According to an alternative embodiment of the present disclosure, the step of starting to cure the curable resin further includes starting to apply heat to the curable resin using a heat source provided in the lower mold unit, and the curable The resin may be a thermosetting resin.

According to an alternative embodiment of the present disclosure, the step of pressing the curable resin through the upper mold unit in conjunction with repeatedly vibrating the upper mold unit in the first direction and the second direction, the upper mold The method may further include discharging atmospheric gas to the outside through an exhaust unit provided in the unit.

According to an alternative embodiment of the present disclosure, the exhaust portion may have a diameter of 0.001 mm to 0.10 mm.

According to an alternative embodiment of the present disclosure, the step of pressing the curable resin through the upper mold unit in conjunction with repeatedly vibrating the upper mold unit in the first direction and the second direction, the upper mold The method may further include applying a pressure of 6500 psi to 14000 psi to the internal space formed by the unit and the lower mold unit.

According to an alternative embodiment of the present disclosure, the lower mold unit may include a first concave portion drawn in the second direction, a first flange region positioned at an edge of the first concave portion, and the first in the first flange region. A first inclined portion present at a position spaced a predetermined distance in one direction and preventing overflow of the curable resin, a filling portion filling the overflowed curable resin, and between the first inclined portion and the filling portion It includes a first horizontal portion, the upper mold unit, the second recessed portion in the first direction, the second flange area located at the edge of the second recessed portion, prevents the overflow of the curable resin It includes a second inclined portion, a pressing portion for pressing the curable resin filled in the filling portion and a second horizontal portion positioned between the second inclined portion and the pressing portion can do.

According to an alternative embodiment of the present disclosure, the angle at which the second inclined portion is inclined toward the first direction with respect to the second flange region is parallel to the first flange region and close to the first flange region. The first inclined portion may be smaller than an angle inclined toward the first direction based on an imaginary line contacting one end of the first inclined portion.

According to an alternative embodiment of the present disclosure, the upper mold unit may further include an exhaust portion in the second horizontal portion.

According to an alternative embodiment of the present disclosure, the filling portion includes a first inclined surface at one end contacting the first horizontal portion and a second inclined surface in contact with the other end of the first inclined surface. 2 including a third inclined surface in contact with the horizontal portion and a third inclined surface in contact with the other end of the third inclined surface, the first inclined surface inclined toward the second direction with respect to the first horizontal portion, the angle The second inclined surface is inclined toward the second direction with respect to the horizontal portion, and an angle between the first inclined surface and the second inclined surface is greater than an angle between the third inclined surface and the fourth inclined surface. You can.

The technical solutions that can be obtained in the present disclosure are not limited to the above-mentioned solutions, and other solutions that are not mentioned are clearly understood by those skilled in the art from the description below. Will be understandable.

According to some embodiments of the present disclosure, it is possible to compensate for curing shrinkage that occurs as the lens molding liquid overflows in the process of manufacturing a lens and prevent a release inability phenomenon.

The effects obtainable in the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned may be clearly understood by those skilled in the art from the following description. .

Various aspects are now described with reference to the figures, in which like reference numerals are used collectively to refer to similar elements. In the following embodiments, for illustrative purposes, a number of specific details are presented to provide a holistic understanding of one or more aspects. However, it will be apparent that such aspect (s) may be practiced without these specific details.
1 is a view for explaining a mold for forming a lens according to some embodiments of the present disclosure.
2 is a view for explaining a mold for forming a lens according to some embodiments of the present disclosure.
3 is a view for explaining a mold for forming a lens according to some embodiments of the present disclosure.
4 is a view for explaining a mold for forming a lens according to some embodiments of the present disclosure.
5 is a flowchart illustrating a method of manufacturing a lens in accordance with some embodiments of the present disclosure.

Various embodiments and / or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, a number of specific details are disclosed to aid in the overall understanding of one or more aspects. However, it will also be appreciated by those skilled in the art of this disclosure that this aspect (s) can be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of the one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used, and the descriptions described are intended to include all such aspects and their equivalents. Specifically, as used herein, "an embodiment", "yes", "a good", "an example", and the like, any aspect or design described is not to be construed as being advantageous or advantageous over other aspects or designs. It may not.

Hereinafter, the same or similar components are assigned the same reference numbers regardless of reference numerals, and overlapping descriptions thereof are omitted. In addition, in describing the embodiments disclosed in this specification, detailed descriptions of related well-known technologies are omitted when it is determined that the gist of the embodiments disclosed in this specification may be obscured. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed herein, and the technical spirit disclosed herein is not limited by the accompanying drawings.

Although the first, second, etc. are used to describe various elements or components, it goes without saying that these elements or components are not limited by these terms. These terms are only used to distinguish one element or component from another element or component. Therefore, it goes without saying that the first element or component mentioned below may be the second element or component within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains. In addition, terms defined in the commonly used dictionary are not ideally or excessively interpreted unless specifically defined.

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or”. That is, unless specified otherwise or unclear in context, "X uses A or B" is intended to mean one of the natural inclusive substitutions. That is, X uses A; X uses B; Or, if X uses both A and B, "X uses A or B" can be applied in either of these cases. It should also be understood that the term “and / or” as used herein refers to and includes all possible combinations of one or more of the listed related items.

Also, the terms “comprises” and / or “comprising” mean that the feature and / or component is present, but excludes the presence or addition of one or more other features, elements, and / or groups thereof. It should be understood as not. In addition, unless otherwise specified or contextually unclear as indicating a singular form, the singular in the specification and claims should generally be construed to mean "one or more."

Hereinafter, the same or similar components are assigned the same reference numbers regardless of the reference numerals, and overlapping descriptions thereof are omitted. In addition, in describing the embodiments disclosed in this specification, detailed descriptions of related well-known technologies are omitted when it is determined that the gist of the embodiments disclosed in this specification may be obscured. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed herein, and the technical spirit disclosed herein is not limited by the accompanying drawings.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present disclosure pertains. In addition, terms defined in the commonly used dictionary are not ideally or excessively interpreted unless specifically defined.

When a component is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle.

The suffixes "modules" and "parts" for components used in the following description are given or mixed only considering the ease of writing the specification, and do not have a meaning or a role distinguished from each other.

Elements or layers, referred to as "on" or "on" of another component or layer, refer to the other layer or other component in the middle, as well as directly above the other component or layer. Include all intervening cases. On the other hand, when a component is referred to as “directly on” or “directly above”, it indicates that no other component or layer is interposed in the middle.

The spatially relative terms “below”, “beneath”, “lower”, “above”, “upper”, etc., are as shown in the figure. It can be used to easily describe a correlation with a component or other components. The spatially relative terms should be understood as terms including different directions of the device in use or operation in addition to the directions shown in the drawings.

For example, if a component shown in the drawing is flipped over, the component described as "below" or "beneath" the other component will be placed "above" the other component. You can. Thus, the exemplary term “below” can include both the directions below and above. The component can also be oriented in other directions, so that spatially relative terms can be interpreted according to the orientation.

The objectives and effects of the present disclosure, and technical configurations for achieving them, will be apparent with reference to embodiments described below in detail together with the accompanying drawings. In describing the present disclosure, when it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present disclosure, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present disclosure, which may vary according to a user's or operator's intention or practice.

However, the present disclosure is not limited to the embodiments disclosed below, and may be implemented in various different forms. Only the present embodiments are provided to make the present disclosure complete, and to fully inform the person of ordinary skill in the art to which the present disclosure belongs, and the present disclosure is only defined by the scope of the claims. . Therefore, the definition should be made based on the contents throughout this specification.

Lens molding mold

The lens molding mold according to some embodiments of the present disclosure may mean an object having a cavity capable of manufacturing a lens having a desired shape when curing the curable resin by dispersing the curable resin for manufacturing the lens therein.

1 to 4 are views for explaining a mold for forming a lens according to some embodiments of the present disclosure.

Referring to FIG. 1, a mold for forming a lens according to some embodiments of the present disclosure may include a lower mold unit 100 and an upper mold unit 200. However, the above-described components are not essential for implementing a mold for manufacturing a lens, and thus, the mold for manufacturing a lens may have more or fewer components than those listed above.

The lower mold unit 100 and the upper mold unit 200 may be manufactured by injection molding polypropylene resin. Since polypropylene resin is easy to process and can be precisely processed, it is suitable as a material for a lens mold unit that must be manufactured in an accurate shape to match the refractive index. However, the present invention is not limited thereto, and the lower mold unit 100 and the upper mold unit 200 may be manufactured of various materials.

The lower mold unit 100 may include a first concave portion 110, a first flange region 120, a first inclined portion 130, a filling portion 140, and a first horizontal portion 150. You can. In addition, the upper mold unit 200 includes a second concave portion 210, a second flange region 220, a second inclined portion 230, a pressing portion 240, a second horizontal portion 250 and an exhaust portion ( 260). However, the above-described components are not essential for implementing the lower mold unit 100 and the upper mold unit 200, so the lower mold unit 100 and the upper mold unit 200 are more than the components listed above. It may have many or fewer components.

The first concave portion 110 of the lower mold unit 100 may be drawn toward the lower side where the lower mold unit 100 is located.

The first flange region 120 may be located at the edge of the first concave portion 110.

The second concave portion 210 of the upper mold unit 200 may be drawn upward toward the upper mold unit 200.

The second flange region 220 may be located at the edge of the second concave portion 210.

The sizes of the first concave portion 110 and the second concave portion 210 may vary depending on the size of the lens to be molded.

The first concave portion 110 and the second concave portion 210 may be formed to have a predetermined curvature so that a refractive index required for the lens can be formed.

Referring to FIG. 2, when the lower mold unit 100 and the upper mold unit 200 come into contact with each other, the first concave portion 110, the first flange region 120, the second concave portion 210 and A space 300 for manufacturing a lens may be formed inside the mold for manufacturing a lens by the second flange region 220.

The space 300 is formed through the first space 310 and the first flange region 120 and the second flange region 220 formed through the first concave portion 110 and the second concave portion 210. A second space 320 may be included.

The curable resin used in forming a lens may have a property of shrinking while being cured. Therefore, as the volume of the curable resin filled in the space 300 is cured, it may be smaller than the volume of the space 300. That is, an empty space may be generated inside the space 300 in the process of curing the curable resin. When an empty space is generated as described above, a vacuum is generated, and the manufactured lens can be strongly attached to the lens manufacturing mold. In addition, a phenomenon that mold release is impossible may occur in which the cured lens is not separated from the lens manufacturing mold. This problem can be solved by a lens manufacturing method according to some embodiments of the present disclosure. This will be described later in more detail with reference to FIG. 4.

Referring back to FIG. 1, the first inclined portion 130 provided in the lower mold unit 100 and the second inclined portion 230 provided in the upper mold unit 200 prevent overflow of the curable resin. Can be prevented.

Specifically, the first inclined portion 130 of the lower mold unit 100 has an inclined surface toward the upper side where the upper mold unit is located, and the second inclined portion 230 of the upper mold unit 200 is an upper mold The unit may have an inclined surface facing upward. Therefore, it is possible to prevent the curable resin from overflowing.

In the initial stage of curing the curable resin, the viscosity of the curable resin may be lowered. When the viscosity of the curable resin is lowered, a part of the curable resin may flow out of the mold for manufacturing a lens. In addition, when the curable resin is pressurized through the lens manufacturing mold, a part of the curable resin may flow out of the lens manufacturing mold. Therefore, as described above, each of the lower mold unit 100 and the upper mold unit 200 is provided with a first inclined portion 130 and a second inclined portion 230, respectively, to prevent the curable resin from overflowing to some extent. can do.

On the other hand, the first inclined portion 130 may be present at a position a predetermined distance above the upper mold unit 200 is located in the first flange area 120. This is to allow the second space 320 to be formed inside the mold for lens molding when the lower mold unit 100 and the upper mold unit 200 come into contact with each other as shown in FIG. 2.

On the other hand, referring to Figure 3, the second inclined portion (230) with respect to the second flange area (22), the upper mold unit (200) is inclined toward the upward (a1) is the first flange area The first inclined portion 130 is located above the virtual line L that is parallel to the 220 and is in contact with one end of the first inclined portion 130 close to the first flange region 220. It may be smaller than the inclined angle a2. This is to form a third space 330 inside the mold for lens molding when the lower mold unit 100 and the upper mold unit 200 come into contact with each other as shown in FIG. 2.

The third space 330 may be a space in which the overflowable curable resin is primarily filled.

Referring back to FIG. 1, the first horizontal portion 150 may be positioned between the first inclined portion 130 and the filling portion 140 of the lower mold unit 100.

A second horizontal portion 250 may be positioned between the second inclined portion 230 and the pressing portion 240 of the upper mold unit 200.

Meanwhile, an exhaust portion 260 may be provided in the second horizontal portion 250.

The exhaust part 260 may have a diameter that is wide enough to allow atmospheric gas to escape from the cavity (or space (300 in FIG. 2)) formed inside the mold for lens shaping during the lens forming process, but does not allow the curable resin to escape. .

Specifically, the exhaust portion 260 may have a diameter of 0.001 mm to 0.10 mm. That is, the diameter of the cross section of the exhaust portion 260 may be 0.001mm to 0.10mm.

Meanwhile, the atmospheric gas exiting through the exhaust unit 260 may include an inert gas such as air or nitrogen. However, the present invention is not limited thereto, and other gases may be included in the atmospheric gas.

As described above, when the atmospheric gas generated during the lens forming process is withdrawn through the exhaust part 260, the release inability phenomenon may be reduced.

Meanwhile, the lower mold unit 100 may include a filling part 140 filling the overflowable curable resin. In addition, the upper mold unit 200 may include a pressing part 240 that presses the curable resin filled in the filling part 140.

Referring to FIG. 2, when the lower mold unit 100 and the upper mold unit 200 come into contact with each other, the pressing part 240 may be inserted into the filling part 140.

Specifically, when the pressing portion 240 is inserted into the filling portion 140, the pressing portion 240 may be inserted into the filling portion 140 while sliding along one inclined surface included in the filling portion 140. Therefore, in the process of the pressing portion 240 is inserted into the filling portion 140, the pressing portion 240 may push the curable resin filled in the filling portion 140 toward the space 300.

Referring to FIG. 4, the filling part 140 may include a first inclined surface 141 having one end contacting the first horizontal part 150 and a second inclined surface 142 contacting the other end of the first inclined surface 141. have. In addition, the pressing part 240 may include a third inclined surface 241 at one end contacting the second horizontal part 250 and a fourth inclined surface 242 contacting the other end of the third inclined surface 241.

The angle (b2) of the first inclined surface 141 inclined toward the lower side where the lower mold unit 100 is located based on the first horizontal portion 150 is based on the second horizontal portion 250. 100) may correspond to an angle b1 at which the second inclined surface 241 is inclined toward the lower side.

Meanwhile, an angle c1 between the first inclined surface 141 and the second inclined surface 142 may be greater than an angle c2 between the third inclined surface 241 and the fourth inclined surface 242.

When the lower mold unit 100 and the upper mold unit 200 come into contact with each other as shown in FIG. 2, inclined surfaces included in the filling part 140 to form a fourth space 340 inside the lens molding mold (141, 142) and the inclined surfaces (241, 242) included in the pressing portion 240 has an angle as described above. The fourth space 340 may be a space in which the overflowable curable resin is secondaryly filled.

In the case of using the mold for lens forming described above in FIGS. 1 to 4, overflow of the curable resin may be prevented, and curing shrinkage may be compensated and mold release inability may be reduced. Hereinafter, a method of manufacturing a lens using the above-described lens molding mold will be described with reference to FIG. 5.

How to manufacture lenses

5 is a flowchart illustrating a method of manufacturing a lens in accordance with some embodiments of the present disclosure. The overlapping contents described above with reference to FIGS. 1 to 4 in connection with FIG. 5 will not be described again, and will be described below with reference to differences.

Referring to FIG. 5, when manufacturing a lens, a curable resin may be injected into a lens molding mold (S510).

Specifically, in step (S510), the curable resin may be injected into the lens molding mold through the curable resin injector.

The volume of the curable resin injected in step S510 may have a volume 1.2 times larger than the volume of the lens completed through lens molding. In this case, it is possible to prevent a defect in the lens caused by the lack of curable resin.

The curable resin can be a prepolymer having a viscosity in the range of about 10,000 cps (centipoise) to 5,000,000 cps. However, it is not limited thereto.

According to some embodiments, when a light source is installed in a lens molding mold, the curable resin may be a photocurable resin.

Specifically, a light source is installed in the lower mold unit 100, and the lower mold unit 100 may be formed of a transparent material. In this case, the curable resin injected into the lens molding mold in step S510 may be a photocurable resin.

According to some other embodiments, if a heat source is installed in the lens molding mold, the curable resin may be a heat curable resin.

Specifically, a heat source may be installed in the lower mold unit 100. In this case, the curable resin injected into the lens molding mold in step S510 may be a thermosetting resin.

On the other hand, after the curable resin is injected in step S510, at least one of the upper mold unit 200 and the lower mold unit may be moved so that the upper mold unit 200 and the lower mold unit 100 come into contact with each other ( S520).

For example, in step S510, the upper mold unit 200 and the lower mold unit 100 may be separated by a first distance. Then, in step S520, the upper mold unit 200 moves downward by a first distance in which the lower mold unit 100 is located, so that the upper mold unit and the lower mold unit may come into contact with each other as shown in FIG.

As another example, in step S510, the upper mold unit 200 and the lower mold unit 100 may be separated by a first distance. Then, in step S520, the lower mold unit 100 may move upward by a first distance to the upper mold unit 200, where the upper mold unit and the lower mold unit may come into contact with each other as shown in FIG.

As another example, in step S510, the upper mold unit 200 and the lower mold unit 100 may be separated by a first distance. Then, in step S520, until the upper mold unit and the lower mold unit come into contact with each other, as shown in FIG. 2, the upper mold unit 200 moves downward and the lower mold unit 100 is located, and the lower mold unit 100 ) Can be moved upwards where the upper mold unit 200 is located.

When the upper mold unit 200 comes into contact with the lower mold unit 100 in step S520, an overflow of the curable resin may occur, but as described above in FIG. 1, the lower mold unit 100 and the upper mold unit Since each of the 200 is provided with the first inclined portion 130 and the second inclined portion 230, overflow can be prevented to some extent.

However, when a part of the curable resin overflows in step S520, the overflowed curable resin is a third space formed when the upper mold unit 200 and the lower mold unit 100 contact each other (FIG. 2) 330) and a fourth space (340 in FIG. 2). Descriptions of the third space (330 in FIG. 2) and the fourth space (340 in FIG. 2) have been described above, and detailed description thereof will be omitted.

On the other hand, when the upper mold unit 200 and the lower mold unit 100 come into contact with each other in step S520, curing of the curable resin may be started (S530).

According to some embodiments of the present disclosure, in step S530, the light source provided in the lower mold unit may be used to start irradiating the curable resin with light. In this case, the curable resin injected in step S510 may be a photocurable resin, and the lower mold unit may be formed of a transparent material.

Specifically, the light source can irradiate ultraviolet light to the photo-curable resin. Ultraviolet light may be irradiated for about 18 to 23 minutes at an intensity of about 1.5 mW / cm 2 to 5.5 mW / cm 2. In addition, the intensity and irradiation time of the ultraviolet light may vary depending on the type of the photo-curable resin composition. However, the intensity and time of the ultraviolet rays described above are only examples and are not limited thereto.

According to some other embodiments of the present disclosure, in step S530, the heat source provided in the lower mold unit may be used to start applying heat to the curable resin. In this case, the curable resin injected in step S510 may be a thermosetting resin.

On the other hand, while the curable resin is cured, the upper mold unit may move a predetermined distance upward in which the upper mold unit is located (S540). In the process of curing the curable resin, the viscosity may be lowered, in this case to increase the volume of the curable resin.

Meanwhile, after the step (S540), while the curable resin is cured, the curable resin may be pressed through the upper mold unit 200 in conjunction with repeatedly vibrating the upper mold unit 200 upward and downward (S550). ).

Specifically, while the upper mold unit 200 vibrates upward and downward, the curable resin may be pressed through the upper mold unit 200 while moving the upper mold unit 200 downward. Since the upper mold unit 200 presses the curable resin while vibrating upward and downward, bubbles generated under the curable resin being cured can escape upward. Therefore, bubbles present in the curable resin generated during the curing process can be removed.

Meanwhile, when the curable resin is pressed through the upper mold unit 200 in conjunction with repeatedly vibrating the upper mold unit 200 upward and downward in step S550, an exhaust unit 260 provided in the upper mold unit ) To release the atmospheric gas inside the lens molding mold to the outside. In this case, since the upper mold unit 200 vibrates upward and downward, atmospheric gas can be more easily escaped through the exhaust unit 260.

According to some embodiments of the present disclosure, a pressure of 6500 psi to 14000 psi may be applied to the inner space formed by the upper mold unit and the lower mold unit in step S550. However, it is not limited thereto.

According to some other embodiments of the present disclosure, the pressure applied to the inner space formed by the upper mold unit and the lower mold unit in step S550 may be gradually increased or decreased or gradually increased and gradually decreased over time. have. However, it is not limited thereto.

On the other hand, since the upper mold unit 200 repeatedly vibrates upward and downward in step S550, it is filled in the third space (330 in FIG. 2) and the fourth space (340 in FIG. 2) in step S520. The curable resin may be refilled in the space formed by the first concave portion 110, the second concave portion 210, the first flange region 120, and the second flange region 220 (300 in FIG. 2). .

Specifically, since the upper mold unit 200 repeatedly vibrates upward and downward, the curable resin filled in the third space (330 in FIG. 2) is detailed along the inclined surface of the first inclined portion 130 by gravity. It can be refilled in one space (300 in FIG. 2).

Meanwhile, since the upper mold unit 200 repeatedly vibrates upward and downward, the pressing portion 240 provided in the upper mold unit 200 moves up and down within the filling portion 140 of the lower mold unit 100. You can. In this case, the curable resin filled in the fourth space (340 in FIG. 2) may be refilled in the above-described space (300 in FIG. 2) along the first horizontal portion 150 and the first inclined portion 130. have.

As described above, when the overflowable curable resin is refilled in the above-described space (300 in FIG. 2), it is possible to prevent a release inability phenomenon in which the manufactured lens is not separated from the lens molding mold.

A camera lens or an ophthalmic lens may be manufactured through a method of manufacturing a lens according to some embodiments of the present disclosure. However, the present invention is not limited thereto, and various lenses may be manufactured through a method of manufacturing lenses according to some embodiments of the present disclosure.

Descriptions of the presented embodiments are provided to enable any person of ordinary skill in the art to use or practice the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art of the present disclosure, and the general principles defined herein can be applied to other embodiments without departing from the scope of the present disclosure. Thus, the present disclosure should not be limited to the embodiments presented herein, but should be interpreted in the broadest scope consistent with the principles and novel features presented herein.

Claims (1)

In the method of manufacturing a lens,
Injecting a curable resin;
Moving at least one of the upper mold unit and the lower mold unit so that the upper mold unit and the lower mold unit come into contact with each other;
Starting the curing of the curable resin;
Moving the upper mold unit by a predetermined distance in a first direction in which the upper mold unit is located; And
Pressing the curable resin through the upper mold unit in conjunction with repeatedly vibrating the upper mold unit in the first direction and a second direction opposite to the first direction;
Containing,
Method of manufacturing lenses.

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