KR101828822B1 - Optical lens manufacturing appratus - Google Patents

Abstract

The present invention relates to an optical lens manufacturing apparatus, and one embodiment according to the present invention is an optical lens manufacturing apparatus comprising: a lens forming mold which accommodates one or more cavity regions in which an optical lens is formed; A resin injection channel for interconnecting the one or more cavity regions, and an electromagnetic wave to differentially expose at least a part of the one or more cavity regions and the resin injection channel And an electromagnetic wave filtering layer formed on the surface of the substrate.

Description

OPTICAL LENS MANUFACTURING APPRATUS [0001]

The present invention relates to an optical lens manufacturing apparatus, and more particularly, to an optical lens manufacturing apparatus provided with an electromagnetic wave filtering layer.

An optical lens is an object made of a transparent material for collecting or dispersing light. The optical lens can be manufactured by a method of polishing a transparent material (for example, glass or quartz) to form a desired shape.

In recent years, an optical lens manufacturing method has been introduced in which a polymer compound such as plastic is melted and injected into a mold for production. In the case of the plastic injection molding method, there is a cavity implemented in the shape of the desired lens in the mold, and the injector injects the melted plastic resin into the mold through the sprue. The injected molten plastic resin is filled in the cavity in the mold and then cooled. When the cooling is completed, the plastic is molded in the shape of the cavity to produce an optical lens.

In the case of the optical lens manufacturing method through plastic injection, the birefringence phenomenon may occur in the plastic forming the optical lens depending on the difference in the cooling rate of the molten plastic resin. In order to reduce the birefringence phenomenon due to the difference in the cooling rate of the plastic resin, it is possible to increase the injection pressure of the resin or to keep the mold temperature high, which decreases the production rate and decreases the productivity.

On the other hand, a photocurable resin has a property of receiving light energy such as ultraviolet ray or electromagnetic wave to crosslink and cure. The ultraviolet curable resin is called an ultraviolet ray curable resin, and the electron ray curable resin is called an electron beam curable resin. As an alternative to the optical lens manufacturing method through injection molding of a plastic resin, a method of manufacturing an optical lens through a photo-curing resin has been developed. Korean Patent Laid-Open No. 10-2010-0088480 discloses a method of manufacturing an optical lens using an ultraviolet curing resin.

However, in the conventional optical lens manufacturing apparatus using the photocurable resin, the photocurable resin on the resin injection path can be cured first than the photocurable resin in the cavity region, and the photocurable resin on the resin injection path is linearized There has been a technical request to prevent the problem.

Korean Patent Publication No. 10-2010-0088480

An object of the present invention is to provide an optical lens manufacturing apparatus capable of alleviating the problem that the resin in the resin injection channel is hardened first by the electromagnetic wave than the resin in the cavity region, have.

One embodiment according to the present invention is an apparatus for manufacturing an optical lens, comprising: a lens forming mold for accommodating one or more cavity areas in which an optical lens is formed; a resin formed inside the lens forming mold, An optical lens comprising an injection channel and an electromagnetic wave filtering layer arranged in such a manner that an electromagnetic wave is differentially exposed to light exposure in at least a part of the one or more cavity regions and the resin injection channel Device can be provided.

In one embodiment, the electromagnetic wave filtering layer may be located on at least one side of the lens forming mold.

In another embodiment, the electromagnetic wave filtering layer may be located on at least a portion of the light-irradiating surface of the resin injection channel such that at least a portion of the resin injection channel is differentially exposed.

In yet another embodiment, the resin injection channel further comprises a gate adjacent to the cavity regions and into which the photocurable resin flows from the resin injection channel to the cavity regions, And may be located on at least a portion of the light-irradiating surface of the gate such that at least a portion thereof is differentially exposed.

In another embodiment, the electromagnetic wave filtering layer is formed inside the lens forming mold and may be positioned to shield the electromagnetic wave at at least a part of the light reflecting surface of the resin injection channel.

In another embodiment, the electromagnetic wave filtering layer may be formed such that at least a part of the light-irradiating surface of the cavity regions is exposed to the light source.

In another embodiment, the electromagnetic wave filtering layer may include at least one of an electromagnetic wave shielding agent and an electromagnetic wave scattering agent.

In yet another embodiment, the electromagnetic wave filtering layer is made of a material selected from the group consisting of Chromium, Nickel, Arsenic, Lead, Antimony, Tin, Zinc, Cobalt, manganese, polyoxymethylene (POM), an olefin-based polymer, and Teflon.

In another embodiment, the electromagnetic wave may include at least one of gamma rays, X-rays, ultraviolet rays, visible rays, infrared rays, and microwaves.

In yet another embodiment, the light exposure depth of the resin injection channel may be formed to be greater than or equal to the light exposure depth of the cavity regions, wherein the light exposure depth of the resin injection channel is such that the electromagnetic wave And the length of the light passing through the resin injection channel, and the light exposure depth of the cavity regions may include a length at which the electromagnetic wave passes through the cavity region.

According to another embodiment of the present invention, there is provided an apparatus for manufacturing an optical lens, comprising: a first lens forming mold having at least one first cavity region in which an optical lens is formed; a first lens forming mold having at least one second cavity region A second lens forming mold and a resin injection channel for interconnecting the at least one first cavity regions or interconnecting the at least one second cavity regions, wherein the electromagnetic wave transmittance of the first lens forming mold and the second lens forming mold The electromagnetic wave transmittance of the lens forming mold may be different from each other.

In one embodiment, the electromagnetic wave transmittance of the first lens forming mold and the transmittance of the second lens forming mold are defined based on the amount of the electromagnetic wave transmitted through the first lens forming mold or the second lens forming mold .

In another embodiment, the electromagnetic wave transmittance of the first lens forming mold and the transmittance of the second lens forming mold may be defined based on the type of the electromagnetic wave transmitted through the first lens forming mold or the second lens forming mold have.

According to another aspect of the present invention, there is provided an apparatus for manufacturing an optical lens, comprising: a first lens forming mold accommodating at least one first lens core in which an optical lens is formed; and at least one second lens core At least one component of the first lens core, the second lens core, the first lens forming mold, and the second lens forming mold may have a different electromagnetic wave transmittance from the other components .

In one embodiment, at least one of the first lens core and the second lens core may have the highest electromagnetic wave transmittance.

The optical lens manufacturing apparatus according to the embodiment of the present invention can alleviate the problem that the resin in the resin injection channel is hardened first by the electromagnetic wave than the resin in the cavity region and the lens production efficiency is lowered.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

Various aspects are now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following examples, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. It will be apparent, however, that such aspect (s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more aspects.
1A is a perspective view illustrating an optical lens manufacturing apparatus according to an embodiment of the present invention.
1B is a cross-sectional view showing an A section of an optical lens manufacturing apparatus according to an embodiment of the present invention.
1C is a cross-sectional view showing a section B of an optical lens manufacturing apparatus according to an embodiment of the present invention.
FIG. 1D is a cross-sectional view showing a section C of an optical lens manufacturing apparatus according to an embodiment of the present invention.
2A is a perspective view showing an optical lens manufacturing apparatus according to an embodiment of the present invention.
2B illustrates an electromagnetic wave filtering layer disposed in an optical lens manufacturing apparatus according to an embodiment of the present invention.
FIG. 3A is a cross-sectional view of an optical lens manufacturing apparatus according to an embodiment of the present invention, in which an electromagnetic wave filtering layer is provided. FIG.
FIG. 3B is a cross-sectional view showing that an electromagnetic wave filtering layer is provided on a light incident surface of a resin injection channel according to an embodiment of the present invention.
4A is a cross-sectional view illustrating that an electromagnetic wave filtering layer is provided on a light incident surface of a gate according to an embodiment of the present invention.
FIG. 4B is a cross-sectional view showing that an electromagnetic wave filtering layer is provided on an optical surface of a gate according to an embodiment of the present invention.
5A shows an optical lens manufacturing apparatus formed in a vertical direction according to an embodiment of the present invention.
FIG. 5B shows electromagnetic wave transmission characteristics of a lens forming mold according to an embodiment of the present invention.
6 shows an optical lens manufacturing apparatus having a lens core having a different electromagnetic wave transmittance in a lens forming mold according to an embodiment of the present invention.
7 shows an optical lens manufacturing apparatus equipped with a photomask according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings. It is to be understood that the following specific structure or functional description is illustrative only for the purpose of describing an embodiment in accordance with the concepts of the present invention and that embodiments in accordance with the concepts of the present invention may be embodied in various forms, It should not be construed as limited to the embodiments.

The embodiments according to the concept of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application. It should be understood, however, that the embodiments according to the concept of the present invention are not intended to be limited to any particular mode of disclosure, but include all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.

The terms first and / or second etc. may be used to describe various components, but the components are not limited to these terms. The terms may be named for the purpose of distinguishing one element from another, for example, without departing from the scope of the right according to the concept of the present invention, the first element being referred to as the second element, The second component may also be referred to as a first component.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when it is mentioned that an element is "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions for describing the relationship between components, such as "between" and "between" or "adjacent to" and "directly adjacent to" should also be interpreted.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It is to be understood that the terms such as " comprises "or" having "in this specification are intended to specify the presence of stated features, integers, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning of the context in the relevant art and, unless explicitly defined herein, are to be interpreted as ideal or overly formal Do not.

An optical lens manufacturing apparatus according to an embodiment of the present invention can manufacture an optical lens using a photocurable resin that is cured through a photopolymerization reaction. An optical lens manufacturing apparatus according to an embodiment of the present invention includes a cavity formed in the shape of a lens to be manufactured in a lens forming mold. In addition, the optical lens manufacturing apparatus may include a resin injection portion for injecting the photo-cured resin into the cavity region.

The photocurable resin injected into the cavity area by the resin injecting device is cured by the polymerization reaction of the photocured resin injected into the cavity area by the electromagnetic wave irradiated by the exposure device for curing the photocurable resin in the exposure process, An optical lens can be formed.

The types of photocurable resins used in the optical lens manufacturing method according to one embodiment of the present invention are shown in Table 1 below.

Constituent
division Radical polymerization type Cationic polymerization type Oligomer - Polyester acrylate
- Epoxy acrylate
- urethane acrylate
- polyether acrylate
- Silicone acrylate - alicyclic epoxy resin
-Glycidyl ether epoxy resin
- Epoxy acrylate
- Vinyl ether Monomer - Monofunctional or multifunctional monomers - Epoxy-based monomer
- Vinyl ethers
- cyclic ethers Light curing
Initiator - benzoin ethers
- amines - diazonium salt
- iodonium salt
- sulfonium salts
- a metallocene compound additive - Adhesion agent, filler, polymerization inhibitor, etc. - Silane coupling agent

Referring to Table 1, when the monomer having a low viscosity is used in the photocurable resin, the flowability of the resin is improved. When an optical lens is manufactured by a conventional plastic resin melt injection method, it is common to use a molten plastic having a high viscosity. In this case, since the viscosity of the resin is high and the flowability is not good, birefringence may occur in the curing (cooling) process, or the optical lens may be nonuniformly generated and the productivity may be deteriorated. However, when the low viscosity monomer is used as in the embodiment of the present invention, the viscosity of the resin is low and the flowability is improved, so that these disadvantages can be solved. The polymer polymer shown in the above Table 1 lists examples that can be used in one embodiment of the present invention, and does not limit the scope of the present invention to the materials listed in Table 1 above.

Hereinafter, in order to clearly illustrate embodiments of the present invention, the following will use the terms light incident surface and light reflection surface. It will be understood by those skilled in the art that an optical surface is a surface on which electromagnetic waves provided by a light source reach a specific object and is formed on a specific object. The light incident surface is an electromagnetic wave When you enter a specific space, you can understand it as the first encounter with a specific space. In addition, the optical surface and the light incidence surface referred to in this specification may be planar or curved.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1A is a perspective view showing an optical lens manufacturing apparatus according to an embodiment of the present invention, FIG. 1B is a sectional view showing an A section of an optical lens manufacturing apparatus according to an embodiment of the present invention, FIG. FIG. 1D is a cross-sectional view showing a section C of an optical lens manufacturing apparatus according to an embodiment of the present invention. FIG.

1A to 1D, an optical lens manufacturing apparatus according to an embodiment of the present invention may include a lens forming mold 100, a resin injection channel 200, and an electromagnetic wave filtering layer 300 .

1A to 1D illustrate that the lens forming mold 100 according to an embodiment of the present invention is integrally formed. However, in another embodiment, the lens forming mold 100 is divided into two parts It is also possible to form the lens forming mold 100 as a whole by combining the upper end portion and the lower end portion. However, in order to clearly illustrate the excellence of the present invention, a case in which the lens-forming mold 100 is integrated will be described below as an example.

The lens forming mold 100 may include cavity regions 121, 122, 123, 124, 125, The cavity areas 121, 122, 123, 124, 125, and 126 may be one or more. Although the six cavity regions 121, 122, 123, 124, 125 and 126 are shown in FIG. 1D, the right range of the present invention is not limited to the number of the specific cavity regions 121, 122, 123, 124, And various cavity areas 121, 122, 123, 124, 125, and 126 may be provided according to a user's request.

The cavity regions 121, 122, 123, 124, 125 and 126 may be formed in the lens forming mold 100. In one cavity region 121, since the cavity region 121 is a place where the optical lens is formed, the cavity region 121 may have the same or similar shape as the outer shape of the optical lens to be manufactured. The upper portion of the cavity region 121 may constitute the upper end surface 111 of the cavity region. Electromagnetic waves are introduced through the upper surface 111 of the cavity region and the electromagnetic wave can reach the cavity region 121 through the upper portion 111a of the cavity region. The surface where the introduced electromagnetic waves first meet the cavity region 121 can be the light incident surface 111b of the cavity region.

In the same way, the lower portion of the cavity region 121 can constitute the lower end face 131 of the cavity region. Electromagnetic waves may flow through the lower surface 131 of the cavity region and the electromagnetic wave may reach the cavity region 121 through the lower portion 131a of the cavity region. The surface where the introduced electromagnetic wave first contacts with the cavity region 121 can be the light incident surface 131b of the cavity region. The upper surfaces 111, 112 and 113 of the plurality of cavity areas 121, 122, 123, 124, 125 and 126 can constitute a part of the upper surface of the lens forming mold 100, The lower end surfaces 131, 132 and 133 of the lens forming molds 100, 121, 122, 123, 124, 125 and 126 may constitute a part of the lower surface of the lens forming mold 100.

The optical curing resin may be cured in one or more of the cavity areas 121, 122, 123, 124, 125, and 126 formed therein to form an optical lens. In order to form the optical lens in the cavity regions 121, 122, 123, 124, 125 and 126, the photocurable resin must be supplied from the outside of the cavity regions 121, 122, 123, 124, 125 and 126. The cavity regions 121, 122, 123, 124, 125 and 126 are formed in the resin injection channel 200 in order to receive the photo-cured resin. The cavity regions 121, 122, 123, 124, Lt; / RTI > The cavity regions 121, 122, 123, 124, 125, and 126 may be supplied with the photocurable resin through the resin injection channel 200.

The photocurable resin can be supplied by a photocurable resin supply device (not shown). The photocurable resin supplying device (not shown) may be connected to the resin injection port 140 provided on one side of the lens forming mold 100. When the photocurable resin supply device (not shown) supplies the photocurable resin to the resin injection port 140, the supplied photocured resin can be supplied to the cavity regions 121 and 124 through the resin injection channel 201. After the supplied photo-curable resin is supplied to the cavity regions 121 and 124, the extra photo-cured resin flows out through the resin injection channel 200, and the photo-curable resin is supplied to the adjacent cavity regions 122 and 125 . That is, the photocurable resin sequentially fills one or more cavity regions 121, 122, 123, 124, 125, 126 and fills one or more cavity regions 121, 122, 123, 124, 125, 126 The remaining photocurable resin can be discharged to the outside through the resin outlet 150. On the other hand, the photocurable resin discharged to the outside can be collected and reused by a collecting device. Alternatively, the photocurable resin for forming the optical lens may be accurately measured to supply only the necessary photocured resin.

 Electromagnetic waves can be provided by the light source 422 included in the exposure device 410, 420 after the one or more cavity areas 121, 122, 123, 124, 125, 126 are filled with the photocurable resin. The provided electromagnetic waves can harden the photocurable resin filled in the one or more cavity regions 121, 122, 123, 124, 125, 126. The cured photopolymerizable resin can be recovered in one or more of the cavity areas 121, 122, 123, 124, 125, 126 to obtain an optical lens. However, when the photocurable resin filled in the one or more cavity areas 121, 122, 123, 124, 125 and 126 is cured by electromagnetic waves, the one or more cavity areas 121, 122, 123, 124, The photo-curable resin in the resin injection channel 200 can be cured first. If the photocurable resin in the resin injection channel 200 is cured first, there is a problem that the flow of the resin flowing into the resin injection channel 200 is lowered. Further, since the photocurable resin in the cavity areas 121, 122, 123, 124, 125, and 126 shrinks when cured, there is a problem that the photocured resin can not be filled in as much space as it shrinks.

In order to solve such a problem, an optical lens manufacturing apparatus according to an embodiment of the present invention may include an electromagnetic wave filtering layer 300. The electromagnetic wave filtering layer 300 may be disposed such that an electromagnetic wave is differentially exposed to at least a part of one or more cavity regions and the resin injection channel 200. The electromagnetic wave filtering layer 300 can selectively pass electromagnetic waves. For example, the electromagnetic wave filtering layer 300 may or may not pass the kind of the electromagnetic wave according to the wavelength. Further, although the electromagnetic wave filtering layer 300 is an electromagnetic wave of the same wavelength, it can pass only a certain amount of electromagnetic waves.

Using such a property, the optical lens manufacturing apparatus according to an embodiment of the present invention can position the electromagnetic wave filtering layer 300 on at least one surface of the lens forming mold 100. When the electromagnetic wave filtering layer 300 is provided on at least one surface of the lens forming mold 100, electromagnetic waves are diffused in the one or more cavity regions 121, 122, 123, 124, 125, 126 and the resin injection channel 200 It can be reached as enemy. The differential arrival of the electromagnetic wave means that the degree of curing of the photocurable resin in one or more of the cavity areas 121, 122, 123, 124, 125, 126 and the resin injection channel 200 can be differentially controlled do. For example, when the electromagnetic wave filtering layer 300 is provided on the upper surface of the lens forming mold 100 corresponding to the resin injection channel 200, the electromagnetic wave filtering layer 300 is provided on the upper surface of the lens forming mold 100, Since the electromagnetic wave will reach the one or more cavity regions 121, 122, 123, 124, 125 and 126 more than the resin injection channel 200, the resin injection channel 200, which has a relatively small amount of photo- It is possible to alleviate the phenomenon that the photo-curing resin in the first layer is hardened first.

More specifically, the electromagnetic wave filtering layer 300 may be located on at least one surface of the lens forming mold 100. Here, one surface of the lens-forming mold 100 may include an upper surface 160a of the lens-forming mold and a lower surface 160b of the lens-forming mold. 1A is a plan view of the electromagnetic wave filtering layer 300 (see FIG. 1A) formed on the upper surface 160a of the lens forming mold 100, assuming that the photocurable resin supplied to the resin injection port 140 flows horizontally inside the lens forming mold 100. FIG. ). Of course, the optical lens manufacturing apparatus according to an embodiment of the present invention may be vertically installed, and the photocurable resin may be injected into the resin injection port 140. For example, when the optical lens manufacturing apparatus is set in the gravity direction, the photocurable resin is injected into the resin injection port 140 in the gravity direction, and the electromagnetic wave is to be provided from at least one side of both sides of the lens formation mold 100, An electromagnetic wave filtering layer 300 is provided on one side of the lens forming mold 100 to allow electromagnetic waves to reach the regions 121, 122, 123, 124, 125, 126 and the resin injection channel 200 in a differential manner. . In a similar manner, when the optical lens manufacturing apparatus is set in the direction opposite to the gravitational direction, the photocurable resin may be injected into the resin injection port 140 in the direction opposite to the direction of gravity. In this case, since the photocurable resin must be supplied in the direction of gravity, a device (not shown) for supplying the photocurable resin with a certain pressure can be used separately.

Since the electromagnetic wave filtering layer 300 is for passing only a part of the electromagnetic wave provided by the exposure devices 410 and 420, it is sufficient that the electromagnetic wave filtering layer 300 is provided in a direction opposite to the direction in which the electromagnetic wave is provided. In other words, if the exposure apparatuses 410 and 420 provide the electromagnetic wave at the upper side or the lower side of the lens forming mold 100, the electromagnetic wave filtering layer 160 is formed on the upper surface 160a of the lens forming mold and the lower surface 160b of the lens forming mold, (300). It is also possible to provide the electromagnetic wave filtering layer 300 except for the area corresponding to the cavity areas 121, 122, 123, 124, 125, 126 in the lens forming mold 100. In order to achieve the same effect while reducing the amount of the electromagnetic wave filtering layer 300, the electromagnetic wave filtering layer 300 may be provided only in a necessary area. For example, resin injection channels 200 and 201 may be formed in order to allow electromagnetic waves to reach the one or more cavity regions 121, 122, 123, 124, 125, 126 and resin injection channels 200 and 201, The electromagnetic wave filtering layer 300 may be provided only on the upper surface 160a of the lens forming mold or on the lower surface 160b of the lens forming mold. Also, a method of supplying the photocurable resin to the resin injection port 140 after standing the lens forming mold 100 in the vertical direction is also possible. As described above, not only the electromagnetic wave filtering layer 300 is provided on the upper surface 160a of the lens forming mold or the lower surface 160b of the lens forming mold, but also the electromagnetic waves to be provided are differentially provided in one or more of the cavity areas 121, 122, The electromagnetic wave filtering layer 300 may be disposed on at least one side or both sides of the lens forming mold 100 so as to reach the resin injection channels 200, 201, 123, 124, 125,

In another embodiment, the electromagnetic wave filtering layer 300 shown in FIG. 1C is removed, and the portion corresponding to the electromagnetic wave filtering layer 300 is used to elevate the lens forming mold 100, thereby controlling the amount of electromagnetic wave transmitted. The distance between the light emitting surface of the lens forming mold 100 and the light incident surface of the resin injection channel 200 is defined as the light transmission distance of the resin injection channel 200 and the lens forming mold 100 And the light incident surface of the cavity region 121 is defined as the light transmission distance of the cavity region 121, the light transmission distance of the resin injection channel 200 is set to the light transmission distance of the cavity region 121 It is possible to make the electromagnetic wave to reach the resin injection channel 200 less. However, the scope of the present invention is not limited to the specific length of the lens-forming mold 100, and the degree of the length of the lens-forming mold 100 can be variously modified according to the setting of the user .

FIG. 2A is a perspective view of an optical lens manufacturing apparatus according to an embodiment of the present invention, and FIG. 2B illustrates an electromagnetic wave filtering layer 300 disposed in an optical lens manufacturing apparatus according to an embodiment of the present invention.

Referring to FIGS. 2A and 2B, the apparatus for manufacturing an optical lens according to an embodiment of the present invention may further include an exposure apparatus 410, 420. The exposure apparatuses 410 and 420 are devices for providing electromagnetic waves, and may be disposed on at least one of the upper and lower portions of the optical lens manufacturing apparatus. As described above, if the lens forming mold 100 is arranged in the vertical direction, the exposure apparatus may be disposed at the left and right portions of the lens forming mold 100, but the scope of the present invention may be applied to the specific exposure apparatuses 410 and 420 Or the method of arranging the exposure apparatuses 410 and 420 is not limited thereto. The exposure apparatuses 410 and 420 may include one or more light sources 422 for generating electromagnetic waves, and the light source 422 may generate various electromagnetic waves according to characteristics of the photocurable resin. For example, the light source may include LED illumination. Since it is a known fact that the light source 422 provides various electromagnetic waves, a detailed description thereof will be omitted in this specification.

The exposure apparatus 410 disposed on the upper side of the lens forming mold 100 may provide electromagnetic waves to the upper surface 160a of the lens forming mold and may be provided with an exposure apparatus 420 disposed at the lower side of the lens forming mold 100 May provide electromagnetic waves to the lower surface 160b of the lens forming mold. The electromagnetic wave filtering layer 300 intercepts or passes through a part of the electromagnetic wave provided by the exposure apparatuses 410 and 420 to form one or more cavity regions 121, 122, 123, 124, 125 and 126 and the resin injection channel 200 , 201, it is enough to face the direction in which the electromagnetic wave is provided, as shown in Fig. 2B.

2B shows that the electromagnetic wave filtering layer 300 is disposed on the upper surface 160a of the lens forming mold except for the surfaces corresponding to the cavity areas 121, 122, 123, 124, 125, and 126 . At this time, when the electromagnetic wave reaches the upper surface 160a of the lens forming mold, some of the electromagnetic waves can not be absorbed or reflected by the electromagnetic wave filtering layer 300, and only a part of the electromagnetic waves can pass through the electromagnetic wave filtering layer 300. Only some electromagnetic waves passing through the electromagnetic wave filtering layer 300 may reach the resin injection channel 200. Therefore, since the electromagnetic waves reaching the one or more cavity regions 121, 122, 123, 124, 125, 126 and the resin injection channel 200 are different, one or more of the cavity regions 121, 122, 123, 124 , 125, 126) will be cured later than the photocurable resin in the resin injection channel (200). Even if voids or gaps are formed in one or more of the cavity regions 121, 122, 123, 124, 125 and 126 due to the shrinkage of the photo-curable resin during the curing of the photo-curable resin, The photo-curing resin remaining in the resin injection channels 200 and 201 can be replenished to one or more of the cavity areas 121, 122, 123, 124, 125 and 126 to improve the production efficiency of the optical lens, The defect rate can be reduced.

Although the upper surface 160a of the lens forming mold is shown in FIG. 2 (b), the electromagnetic wave filtering layer 300 can be disposed on the lower surface 160b of the lens forming mold 100 in the same manner. . The optical lens manufacturing apparatus according to an embodiment of the present invention is for differentially exposing electromagnetic waves to one or more cavity regions 121, 122, 123, 124, 125, 126 and resin injection channels 200, 201 The electromagnetic wave filtering layer 300 corresponds to the resin injection channels 200 and 201 so that the electromagnetic waves can reach the resin injection channel 200 in a different manner as the one or more cavity areas 121, 122, 123, 124, 125, Or may be disposed on the upper surface 160a of the lens-forming mold, based on the area on which the lens is formed.

The electromagnetic wave filtering layer 300 may be disposed only on the upper surface 160a of the lens forming mold corresponding to the resin injection channel 200 as shown in FIG. 2B (b) It may be disposed only in a part of the upper surface 160a of the lens forming mold corresponding to the resin injection channel 200 so that at least a part of the resin injection channel 200 is differentially exposed.

FIG. 3A is a sectional view showing an electromagnetic wave filtering layer provided in an optical lens manufacturing apparatus according to an embodiment of the present invention, FIG. 3B is a cross-sectional view showing an electromagnetic wave filtering Layer is shown in Fig.

3A and 3B, an electromagnetic wave filtering layer 300 according to an exemplary embodiment of the present invention includes a plurality of resin injection channels 200, a plurality of resin injection channels 200, And may be located on at least a portion thereof.

1B, the electromagnetic wave filtering layer 300 is disposed on at least a part of the upper surface and the lower surface of the lens forming mold 100. However, the electromagnetic wave filtering layer 300 is provided in the lens forming mold 100 in FIG. The electromagnetic wave filtering layer 300 surrounds the resin injection channel 200 because it has to differentiate the electromagnetic waves reaching the one or more cavity regions 121, 122, 123, 124, 125 and 126 and the resin injection channels 200 and 201 . The electromagnetic wave filtering layer 300 may be provided in a direction in which the electromagnetic wave is introduced since it is for differentiating the arrival of the electromagnetic wave. For example, as shown in FIG. 3A, the electromagnetic wave filtering layer 300 may be disposed on the light incident surfaces 201a and 201b of the resin injection channel 201. FIG. Here, the light incident surfaces 201a and 201b of the resin injection channel 201 may include a surface where an electromagnetic wave generated by the light source 422 meets a specific space or an object. It is possible to dispose the electromagnetic wave filtering layer 300 on the light incident surfaces 201a and 201b of the resin injection channel 200 at the same point.

3B, the electromagnetic wave filtering layer 300 is formed inside the lens forming mold 100, and at least a part of the light incident surfaces 200a and 200b of the resin injection channel 200 is exposed to the exposure apparatuses 410 and 420 To shield the electromagnetic waves irradiated from the light emitting device. Here, shielding the electromagnetic wave means that a specific electromagnetic wave is passed through and the electromagnetic wave other than the specific electromagnetic wave is blocked. The photocurable resin may be cured irrespective of the amount of the photocurable resin with respect to a specific electromagnetic wave. In order to exclude a specific electromagnetic wave, the electromagnetic wave filtering layer 300 that shields the electromagnetic wave may be used.

The electromagnetic wave filtering layer 300 may be formed such that at least a part of the light reflection surfaces 111b and 131b of the cavity regions 121, 122, 123, 124, 125 and 126 are exposed to electromagnetic waves. The cavity areas 121, 122, 123, 124, 125, and 126 provided in the lens-forming mold 100 are exposed to electromagnetic waves for a constant intensity and a constant time because they are cured by electromagnetic waves. . For this purpose, the electromagnetic wave filtering layer 300 according to an embodiment of the present invention may be formed on at least a part of the light reflection surfaces 111b and 131b of the cavity regions.

The amount of the electromagnetic waves reaching the cavity regions 121, 122, 123, 124, 125, and 126 by the electromagnetic wave filtering layer 300 according to an embodiment of the present invention is smaller than the amount of electromagnetic waves reaching the resin injection channels 200 and 201 Is preferable. The amount of the photo-curable resin in the resin injection channel 200 must be less than the amount of the photo-curable resin in the cavity regions 121, 122, 123, 124, 125 and 126, An electromagnetic wave filtering layer 300 is formed on at least a part of the light-irradiating surfaces 111b and 131b of the cavity areas 121, 122, 123, 124, 125 and 126 to prevent the light- The above problem can be alleviated by allowing the electromagnetic wave to pass through

4A is a cross-sectional view illustrating that an electromagnetic wave filtering layer is provided on a light incident surface of a gate according to an embodiment of the present invention.

The surface where the electromagnetic wave provided from the light source first comes into contact with the gate 500 can be the light incident surface of the gate and the electromagnetic wave provided from the light source comes into contact with the upper surface of the lens forming mold 100 corresponding to the gate 500 May be an optical surface 510 of the gate. 4A illustrates that the electromagnetic wave filtering layer 300 is provided on the light incident surface of the gate, and FIG. 4B illustrates that the electromagnetic wave filtering layer 300 is provided on the light reflecting surface 510 of the gate will be.

Referring to FIG. 4A, a gate 500 according to an embodiment of the present invention may be formed between the cavity region 121 and the resin injection channel 200. The diameter G of the gate 500 may be smaller than the diameter T of the cavity region 121. [ When an optical lens is manufactured using the optical lens manufacturing apparatus according to an embodiment of the present invention, a lens corresponding to one or more cavity regions 121, 122, 123, 124, 125, 126 is formed, Are connected to each other. It is necessary to make the portion where the cavity region 121 and the resin injection channel 200 meet, that is, the portion of the gate 500 thin and thin, in order to easily separate the produced optical lens from the adjacent lens. If the diameter (G) of the gate 500 is too small, it takes a long time to supply the photocurable resin to lower the production efficiency. Therefore, considering the manufacturing time of the optical lens, ) Is determined.

However, if the diameter G of the gate 500 is smaller than the diameter T of the cavity region 121 and exposed to the same electromagnetic wave, the amount of the photocurable resin in the gate 500 is small, There is a problem. To overcome this problem, the electromagnetic wave filtering layer 300 may be positioned on at least a portion of the light incidence surface of the gate 500 such that at least a portion of the gate 500 is differentially exposed. In FIG. 3B, if the electromagnetic wave filtering layer 300 is provided on at least a portion of the resin injection channel 200, the electromagnetic wave filtering layer 300 is provided in the gate 500 to which the resin injection channel 200 and the cavity region are connected, It is possible to prevent the photocurable resin in the gate 500 from being hardened first. Accordingly, not only the production efficiency of the optical lens manufacturing apparatus can be improved, but also the effect of easily separating the optical lens can be secured.

The light exposure depth C of the resin injection channel 200 is set to be equal to or greater than the light exposure depth T of the cavity regions 121, 122, 123, 124, 125, . That is, in this specification, the light exposure depth may mean a length through which electromagnetic waves pass in a certain space. For example, the light exposure depth C of the resin injection channel 200 may mean the length through which the electromagnetic wave passes through the resin injection channel 200. In addition, the light exposure depth T of the cavity region 121 may include a length through which the electromagnetic wave passes through the cavity region 121.

The degree of curing of the photo-curable resin depends on the amount of the photo-curable resin. Therefore, if the amount of the photo-curable resin in the resin injection channel 200 is made larger than the amount of the photo-curable resin in the cavity region 121, It is possible to mitigate the curing of the photo-curing resin in the resin injection channel 200 first. That is, it is preferable that the light exposure depth C of the resin injection channel 200 is formed to be equal to or greater than the light exposure depth T of the cavity region 121. If the light exposure depth C of the resin injection channel 200 is formed to be equal to or greater than the light exposure depth T of the cavity region 121, The optical lens manufacturing apparatus according to the present invention can provide the optical lens manufacturing apparatus of the present invention in consideration of the situation in which the photocurable resin is supplied at a low cost, It is also possible to extend the light exposure depth C.

FIG. 4B is a cross-sectional view showing that an electromagnetic wave filtering layer is provided on an optical surface of a gate according to an embodiment of the present invention.

Referring to FIG. 4B, the electromagnetic wave filtering layer 300 according to an embodiment of the present invention may be provided on an optical surface 510 of the gate 500. Here, the light-irradiating surface 510 of the gate may include a surface where the electromagnetic wave provided from the light source meets the lens-forming mold 100. In another aspect, the light-irradiating surface 510 of the gate may include a surface formed on one side of the lens-forming mold 100 with a length equal to the width g of the gate 500. If it is difficult to form the electromagnetic wave filtering layer 300 in the gate due to design difficulty, the electromagnetic wave filtering layer 300 may be formed on the light-reflecting surface 510 of the gate as shown in FIG. 4B. When the electromagnetic wave filtering layer 300 is provided closer to the light source providing the electromagnetic wave, it is possible to effectively prevent the electromagnetic wave from flowing into the gate 500. In addition, electromagnetic waves can be refracted while being passed through the upper end portion 111a of the lens-forming mold 100, so that dispersion in an unexpected direction can be mitigated.

The electromagnetic wave filtering layer 300 according to an embodiment of the present invention may include at least one of an electromagnetic wave shielding agent and an electromagnetic wave scattering agent. The electromagnetic wave filtering layer 300 is for selectively passing electromagnetic waves. The method includes a method of intercepting electromagnetic waves and a method of scattering electromagnetic waves. The electromagnetic wave filtering layer 300 may block or scatter specific electromagnetic waves due to a difference in pattern or a difference in characteristics of materials.

The electromagnetic wave shielding agent can absorb electromagnetic waves of a specific wavelength by blocking the electromagnetic waves reaching the electromagnetic wave filtering layer 300 by absorbing electromagnetic waves of a specific wavelength among the electromagnetic waves reaching the electromagnetic wave filtering layer 300. For example, the electromagnetic wave shielding agent may include a substance such as a benzophenone derivative, a para-aminobenzoic acid derivative, a paramethoxy cinnamate derivative, or a salicylic acid derivative. The electromagnetic wave filtering layer 300 may be formed of any one selected from the group consisting of Chromium, Nickel, Arsenic, Lead, Antimony, Tin, Zinc, Cobalt, (Manganese), POM (Polyoxymethylene), an olefin-based polymer, and Teflon. Particularly, POM (Polyoxymethylene) and Teflon are excellent releasable materials, and the optical lens can be easily separated from the lens forming mold 100 after the optical lens is manufactured. Here, the olefin-based polymer may include a material such as polyethylene terephthalate (PET), polyethylene (PE), or polypropylene (PP).

However, the materials listed above are the most suitable materials for the practice of the present invention, and the scope of the present invention is not limited thereto. It is possible to filter electromagnetic waves within a range that is obvious to a person skilled in the art, .

The electromagnetic wave scattering agent may include blocking an electromagnetic wave in a predetermined pattern or blocking an electromagnetic wave including an inorganic powder such as titanium oxide or zinc oxide.

In the present specification, the electromagnetic wave may include at least one of gamma rays, X-rays, ultraviolet rays, visible rays, infrared rays, and microwaves. The electromagnetic wave filtering layer 300 can pass an electromagnetic wave of a specific wavelength or pass a certain amount of electromagnetic waves. For example, when the photocurable resin is cured by ultraviolet rays, an electromagnetic wave filtering layer 300 for blocking ultraviolet light may be provided on an optical surface of the resin injection channel 200. On the other hand, the photocurable resin in the cavity regions 121, 122, 123, 124, 125, 126 without the electromagnetic wave filtering layer 300 can be cured.

FIG. 5A shows an optical lens manufacturing apparatus formed in a vertical direction according to an embodiment of the present invention, and FIG. 5B shows electromagnetic wave transmission characteristics of a lens forming mold according to an embodiment of the present invention.

5A, an optical lens manufacturing apparatus according to an embodiment of the present invention may include a first lens forming mold 610, a second lens forming mold 620, and resin injection channels 630 and 631 .

The first lens forming mold 610 may be provided with one or more first cavity areas 611, 612, 613, 614, 615, and 616 in which an optical lens is formed. The second lens forming mold 620 may be provided with one or more second cavity regions (not shown) in which optical lenses are formed. When the first lens forming mold 610 and the second lens forming mold 620 are engaged, the resin injection channels 630 and 631 can be sealed. The resin injection channel 630 can interconnect one or more first cavity regions 611, 612, 613, 614, 615, 616. In addition, the resin injection channels 630 and 631 can interconnect one or more second cavity regions (not shown). The resin injection channel 200 can supply the photocurable resin to the first cavity regions 611, 612, 613, 614, 615, 616 and the second cavity regions (not shown).

The electromagnetic wave transmittance of the first lens forming mold 610 and the electromagnetic wave transmittance of the second lens forming mold 610 are changed so as to differentiate electromagnetic waves reaching the cavity regions 611, 612, 613, 614, 615, 616 and the resin injection channels 630, The electromagnetic wave transmittances of the mold 620 may be different from each other. For example, the first lens forming mold 610 corresponding to the first cavity regions 611, 612, 613, 614, 615, and 616 uses a material having a high electromagnetic wave transmittance and the resin injection channels 630 and 631 When a material having a low electromagnetic wave transmittance is used in the first lens forming mold 610 corresponding to the first lens forming mold 610, more electromagnetic waves reach the first cavity regions 611, 612, 613, 614, 615 and 616, It is possible to mitigate the curing of the photocurable resin in the channels 630 and 631 first.

The electromagnetic wave transmittance of the first lens forming mold 610 and the transmittance of the second lens forming mold 620 are set such that the first lens forming mold 610 or the second lens forming mold 620 Can be defined based on the amount of electromagnetic waves transmitted. For example, in the case of using a photo-curable resin that hardens only in electromagnetic waves having a certain intensity or more, the transmittance of a predetermined amount or less of transmittance in a region excluding the region corresponding to the cavity regions 611, 612, 613, 614, 615, The photocurable resin in the resin injection channels 630 and 631 is hardened before the photocurable resin in the cavity regions 611, 612, 613, 614, 615, and 616, Can be mitigated.

The electromagnetic wave transmittance of the first lens forming mold 610 and the transmittance of the second lens forming mold 620 are set so that the first lens forming mold 610 or the second lens forming mold 620 And the like). For example, in the case of using a photo-cured resin that hardens only in electromagnetic waves having a certain wavelength, a lens which passes only a certain wavelength in an area excluding the area corresponding to the cavity areas 611, 612, 613, 614, 615, The photopolymerizable resin in the resin injection channel 620 can be relieved of curing before the photocurable resin in the cavity areas 611, 612, 613, 614, 615, 616 have.

5B shows a lens forming mold 610 that allows only a certain amount of electromagnetic waves of the same wavelength to pass therethrough. FIG. 5B shows a lens forming mold 610 having a property of passing only electromagnetic waves having a specific wavelength, And the material characteristics for exhibiting such properties are described above and will not be described below.

6 shows an optical lens manufacturing apparatus having a lens core having a different electromagnetic wave transmittance in a lens forming mold according to an embodiment of the present invention.

Referring to FIG. 6, an optical lens manufacturing apparatus according to an embodiment of the present invention may include a first lens forming mold 610 and a second lens forming mold 620.

The first lens forming mold 610 may include a first receiving region 610a. A first lens core 640 may be embedded in the first accommodation region 610a. In other words. The user may fabricate the first lens forming mold 610 and the first lens core 640 by a separate process and then use the first lens forming mold 610 and the first lens core 640 to manufacture the optical lens, Can be used in combination. Although the first lens core 640 is shown as a cylindrical shape in Fig. 6, the scope of the present invention is not limited to the shape of the first lens core 640, It is sufficient that the core 640 can be inserted. In the same manner, the second lens forming mold 620 may include a second accommodation region 620a, and the second lens region 650 may be embedded in the second accommodation region 620a. When the first lens core 640 and the second lens core 650 are combined, a cavity region can be formed.

If the electromagnetic wave transmittance of the first lens core 640 is larger than the electromagnetic wave transmittance of the first lens forming mold 610, even if electromagnetic waves are irradiated on the first lens forming mold 610, And electromagnetic waves less than the cavity region 611 reach the region other than the cavity region 611. As a result, As described above, in order to supply the photocurable resin to the cavity region 611, a resin injection channel (not shown) connected to the cavity region 611 must be provided. Due to the difference in the electromagnetic wave transmittance, the resin injection channel (not shown) A relatively small amount of electromagnetic waves can reach the cavity region 611, thereby alleviating the curing of the photo-cured resin in the resin injection channel (not shown) first. The electromagnetic wave transmittance of the second lens forming mold 620 and the second lens core 650 may be set differently so that the amount or kind of the electromagnetic wave reaching the cavity region 611 can be made different.

More specifically, at least one component of the first lens core 640, the second lens core 650, the first lens-forming mold 610, and the second lens-forming mold 620 may include other components It is possible to have different electromagnetic wave transmittance and to increase the electromagnetic wave reaching the cavity region 611. [ In other respects, the type and amount of electromagnetic waves reaching the resin injection channel (not shown) can be reduced.

Also, at least one of the first lens core 640 and the second lens core 650 may have the highest electromagnetic wave transmittance. For example, when the electromagnetic wave transmittance of the first lens core 640 is the highest and the electromagnetic wave transmittances of the second lens core 650, the first lens forming mold 610, and the second lens forming mold 620 are set to be the first By reducing the electromagnetic wave transmittance of the lens core 640, it is possible to reduce the amount of electromagnetic waves reaching the resin injection channel (not shown) while increasing the electromagnetic wave reaching the cavity region 611.

The electromagnetic wave transmittance of the first lens core 640, the first lens forming mold 610 and the second lens forming mold 620 is set to be higher than the electromagnetic wave transmittance of the second lens core 650 The amount of electromagnetic waves reaching the resin injection channel (not shown) can be reduced while increasing the electromagnetic wave reaching the cavity region 611. [ That is, at least one component of the first lens core 640, the second lens core 650, the first lens forming mold 610, and the second lens forming mold 620 has different electromagnetic wave transmittance And at least one of the first lens core 640 and the second lens core 650 has the highest electromagnetic wave transmittance to improve the production efficiency of the optical lens.

7 shows an optical lens manufacturing apparatus equipped with a photomask according to an embodiment of the present invention.

7, an optical lens manufacturing apparatus provided with a photomask 700 according to an embodiment of the present invention may include a light source 422, a photomask 700, and a lens forming mold 100.

The light source 422 may be any means capable of generating electromagnetic waves. For example, the light source 422 may be an LED device capable of curing the photocurable resin, but the scope of the present invention is not limited thereto. As shown in FIG. 7, the light source 422 may be provided in the exposure apparatus 410.

The light mask 700 may be disposed between the light source 422 and the lens forming mold 100. It is sufficient that the optical mask 700 can block or filter the electromagnetic wave generated by the light source 422. For example, the optical mask 700 may be a means for adjusting the type of a specific electromagnetic wave or the amount of a specific electromagnetic wave, if necessary. As mentioned above, it is sufficient that features for the optical mask 700 include materials capable of reflecting or blocking electromagnetic waves.

 The photomask 700 may include one or more holes through which electromagnetic waves can pass. The electromagnetic wave can reach the lens forming mold 100 through the holes 701, 702, 703, 704, 705 and 706 provided in the optical mask 700, Holes 701, 702, 703, 704, 705, 706 may be provided in the photomask 700 so that most of the electromagnetic waves can reach the portion of the photomask 700. Of course, not only the electromagnetic waves are allowed to pass through the holes 701, 702, 703, 704, 705 and 706, but also the portions corresponding to the holes 701, 702, 703, 704, 705 and 706, It is also possible to implement using material.

Electromagnetic waves can reach the lens forming mold 100 through the optical mask 700. Particularly, since electromagnetic waves are received through the holes 701, 702, 703, 704, 705, and 706 provided in the optical mask 700, most of the electromagnetic waves reach the portions where the lens cores 640 and 650 exist. It is possible to mitigate the hardening of the photo-cured resin in the resin injection channels 200 and 201 first because electromagnetic waves weakly reach the portions other than the portion where the optical lens is formed.

Although the light mask 700 is illustrated as being based on the schematic diagram of the light source 422 and the lens forming mold 100 in FIG. 7, the light mask 700 may be attached to the light source 422 Implementation is possible. It is apparent to those skilled in the art that the light source 422 may be an apparatus for providing electromagnetic waves while moving up and down.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and changed without departing from the scope of the invention.

100: lens forming mold
111: upper surface of the cavity area
111a: upper part of the cavity area
111b, and 131b: light incident surface of the cavity area
121, 122, 123, 124, 125, 126:
131, 132, 133: a bottom surface of the cavity area
131a: Lower part of the cavity area
140: Resin inlet
150: resin outlet
160a: an upper surface of the lens forming mold
160b: the lower surface of the lens forming mold
200: resin injection channel
200a, 200b: light incident surface of the resin injection channel
201: resin injection channel
201a, 201b: light incident surface of resin injection channel
300: electromagnetic wave filtering layer
410, 420: Exposure device
422: Light source
500: gate
510: optical surface of gate
610: First lens forming mold
610a: first receiving area
611: Cavity area
620: Second lens forming mold
610b: second receiving area
630, 631: resin injection channel
640: first lens core
650: Second lens core
700: Light mask
701, 702, 703, 704, 705, 706: holes provided in the optical mask
C: diameter of resin injection channel, light exposure depth of resin injection channel
G: diameter of the gate, light exposure depth of the gate
T: diameter of the cavity region, light exposure depth of the cavity region

Claims (10)

An optical lens manufacturing apparatus comprising:
A lens forming mold receiving one or more cavity areas in which an optical lens is formed;
A resin injection channel formed inside the lens forming mold and interconnecting the one or more cavity regions;
A resin injection channel formed adjacent to the at least one cavity region and the resin injection channel for allowing the photo-cured resin to flow from the resin injection channel to the cavity regions, and for easily separating the produced optical lens from the adjacent lens, A gate configured to have a diameter smaller than the diameter of the at least one cavity region; And
The resin injection channel and the gate are subjected to light exposure (Electro Magnetic Wave) in a different manner to expose the resin injection channel and the curing of the photocurable resin present on the gate Wherein the light incident surface of the resin injection channel, the light incident surface of the resin injection channel, is formed so that the electromagnetic wave provided from the light source is in contact with the resin Wherein the light incident surface of the gate, the light incident surface of the gate, when entering the injection channel, comprises a surface that first contacts the photocurable resin on the resin injection channel, , Including the surface that first contacts the photocurable resin on the gate, An electromagnetic wave filtering layer for causing an electromagnetic wave to differentially reach the one or more cavity regions, the resin injection channel, and the gate;
/ RTI >
Optical lens manufacturing apparatus.
delete The method according to claim 1,
Wherein the electromagnetic wave filtering layer comprises at least one of an electromagnetic wave shielding agent and an electromagnetic wave scattering agent.
Optical lens manufacturing apparatus.
The method according to claim 1,
The electromagnetic wave filtering layer may include at least one selected from the group consisting of Chromium, Nickel, Arsenic, Lead, Antimony, Tin, Zinc, Cobalt, Manganese, (POM), an olefin-based polymer, and Teflon.
Optical lens manufacturing apparatus.
The method according to claim 1,
Wherein the electromagnetic wave includes at least one of gamma ray, X-ray, ultraviolet ray, visible ray, infrared ray, microwave,
Optical lens manufacturing apparatus.
The method according to claim 1,
The light exposure depth of the resin injection channel, including the length of the electromagnetic wave passing through the resin injection channel,
Wherein the electromagnetic wave is formed to be equal to or larger than a light exposure depth of cavity regions including a length passing through the cavity region,
Optical lens manufacturing apparatus.
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