Contact lens vision inspection system capable of underwater inspection

Abstract

A contact lens vision inspection device capable of underwater inspection is disclosed. The contact lens vision inspection device capable of underwater inspection comprises: a first jig having one or more first receiving holes formed therein capable of receiving a contact lens, wherein water can be filled in the first receiving holes; a second jig having one or more second receiving holes formed therein capable of receiving a contact lens, wherein water can be filled in the second receiving holes; a third jig having one or more third receiving holes formed therein capable of receiving a contact lens, wherein water can be filled in the third receiving holes; a first moving part capable of attaching and transferring a contact lens received in the first jig to the second jig; and a vision inspection part capable of inspecting a contact lens in a state of being underwater received in the second jig using vision to determine whether it is a good product or a defective product. and includes a second moving unit capable of attaching a contact lens determined to be a good product through the vision inspection unit among the contact lenses accommodated in the second jig and moving it to the third jig.

Description

Technology Field

[0001] The present invention relates to a vision inspection device, and more specifically, to a contact lens vision inspection device capable of performing vision inspection on a contact lens even when the contact lens is submerged in water. Background Technology

[0003] Generally, contact lenses are manufactured by forming them using a full mold method through a contact lens mold that includes a male mold that forms a concave surface and a female mold that forms a convex surface.

[0004] The above male mold has a lower portion protruding while being hollow inside, and a convex surface is provided to form the concave surface of the contact lens, and the above female mold has a concave surface into which the convex surface is inserted to form the convex surface of the contact lens, and the contact lens is formed through the space formed between the female mold and the male mold by mutually combining them.

[0005] To briefly describe the molding process of the above contact lens, the female mold is placed on a mold workbench, the lens material liquid is filled into the concave surface of the female mold, the male mold is joined from the top, and then the contact lens is molded by leaving it as is for a predetermined time or through a heat curing process.

[0006] A technology that determines whether contact lenses produced through such a process are good or defective using a vision inspection method is the contact lens vision inspection device of the conventional Korean registered patent (Registration No. 10-1718144).

[0007] The prior art is designed to produce only high-quality contact lenses by verifying the presence or absence of defects in contact lenses, comprising: a first tray loading unit on which a tray on which a lens to be inspected is placed is loaded, and a support member installed at the bottom to support the lowest tray; a tray moving unit installed to move the tray loaded in the first tray loading unit to a location equipped with a first lens moving means and to move back and forth between the first tray loading unit and the third tray loading unit; a first lens moving means installed to move back and forth along a rail and to pick up the lens to be inspected one by one from the tray moved by the tray moving unit and place it on a lens inspection table; a shooting means for capturing the lens to be inspected placed on the lens inspection table to acquire an image; and a control unit that examines the image captured by the shooting means to determine the quality of the lens to be inspected and whether it requires re-inspection, and to control the overall operation of the lens inspection device. A second lens moving means installed to move back and forth along the rail, and according to the determination result of the control unit, moves and drops good lenses determined to be good and lenses determined to be re-inspected into respective trays, and discharges defective lenses determined to be defective through a waste lens discharge port connected to a waste lens hopper; a tray support unit installed to support the trays on which the good lenses and lenses subject to re-inspection are placed, and to move back and forth between a second tray loading unit and a finished product loading unit; a second tray loading unit having empty trays loaded to provide empty trays to the tray support unit; a rotation guide piece installed on one side of the second tray loading unit to guide a lens, moved by the second lens moving means and falling into the tray, to rotate 180 degrees and fall after hitting the upper surface of one side; and a finished product loading unit installed facing the second tray loading unit, on which trays filled with the good lenses and lenses subject to re-inspection are respectively loaded. It is characterized by comprising: a third tray loading section installed facing the first tray loading section, on which a tray is loaded after the lens to be inspected has been moved and is empty.

[0008] Conventional technology employs a method of picking up lenses to be inspected one by one and placing them on a lens inspection table for vision inspection, and there is a risk of contamination or damage caused by ambient air when the lenses are moved.

[0009] Therefore, it is necessary to safely move the contact lenses to be inspected to the inspection equipment to prevent damage or the attachment of foreign substances.

[0010] In addition, there is a need to develop new technology that enables examination while maintaining the original shape of the contact lens, without it being deformed by the external environment. The problem to be solved

[0012] The technical problem that the present invention aims to solve is to provide a contact lens vision inspection device capable of underwater inspection that can determine the quality and defects of contact lenses even when the contact lenses are submerged in water. means of solving the problem

[0014] To solve the technical problem described above, a contact lens vision inspection device capable of underwater inspection according to an embodiment of the present invention comprises: a first jig having one or more first receiving holes formed therein capable of receiving a contact lens, wherein water can be filled in the first receiving holes; a second jig having one or more second receiving holes formed therein capable of receiving a contact lens, wherein water can be filled in the second receiving holes; a third jig having one or more third receiving holes formed therein capable of receiving a contact lens, wherein water can be filled in the third receiving holes; a first moving part capable of attaching the contact lens received in the first jig and moving it to the second jig; and a vision inspection part capable of inspecting the contact lens in a state of being underwater received in the second jig using vision to determine whether it is a good product or a defective product. It may include a second moving unit capable of attaching a contact lens determined to be a good product through the vision inspection unit among the contact lenses accommodated in the second jig and moving it to the third jig.

[0015] In one embodiment, the first moving part may include one or more suction tubes capable of sucking a contact lens; and a detachment control part connected to the end of the suction tube in a manner that wraps around the end of the suction tube, and capable of adjusting the degree of attachment of the contact lens when the contact lens is sucked through the suction tube to facilitate the detachment or attachment of the contact lens.

[0016] In one embodiment, the detachable adjustment part may have the shape of a gear and may have one or more insertion parts formed into which the suction tube can be inserted.

[0017] In another embodiment, the detachable adjustment part may be made of a flexible material, have a hollow formed therein, and have a gear shape with six teeth, and the three insertion parts into which the suction tube can be inserted may be formed in a shape surrounding the center of the hollow.

[0018] In one embodiment, the second receiving portion comprises an upper retaining projection having an upper hollow formed therein; a lower wall extending downward from the upper retaining projection to form a lower hollow; and a transparent plate having a downwardly convex shape between the upper retaining projection and the lower wall, and may be made of a transparent material.

[0019] In one embodiment, the lower wall of the second receiving hole may have a shape that protrudes further downward than the transparent plate. Effects of the invention

[0021] The present invention as described above has the effect of being able to inspect for defects in a contact lens through vision even while the contact lens is placed underwater and its shape is maintained.

[0022] Since the present invention makes it easy to attach and detach contact lenses, contact lenses can be easily attached or detached even underwater.

[0023] The present invention enables the production of high-quality contact lenses by distinguishing between good and defective contact lenses through vision inspection, thereby increasing user confidence in the product and enhancing competitiveness compared to other products. Brief explanation of the drawing

[0025] FIG. 1 is a perspective view illustrating a contact lens vision inspection device capable of underwater inspection according to an embodiment of the present invention. FIG. 2 is a plan view illustrating a contact lens vision inspection device capable of underwater inspection according to an embodiment of the present invention. FIG. 3 is a perspective view for explaining a first moving part according to an embodiment of the present invention. FIG. 4 is a perspective view illustrating a suction tube and a detachable control unit according to an embodiment of the present invention. FIG. 5 is a bottom view illustrating a suction tube and a detachable control unit according to an embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating the connection portion between the suction tube and the end portion of the detachable adjustment part according to an embodiment of the present invention. FIG. 7 is a perspective view illustrating a detachable adjustment unit according to an embodiment of the present invention. FIG. 8 is a perspective view for explaining a second jig according to an embodiment of the present invention. FIG. 9 is a perspective view illustrating a second receiving portion according to an embodiment of the present invention. FIG. 10 is a cross-sectional view illustrating a second receiving portion according to an embodiment of the present invention. FIG. 11 is a side view (a) and a bottom view (b) for explaining the attachment state of a detachable adjustment part and a contact lens according to an embodiment of the present invention. Specific details for implementing the invention

[0026] The present invention is susceptible to various modifications and may take various forms, and embodiments are to be described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each figure. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms.

[0027] The above terms are used solely for the purpose of distinguishing one component from another. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0028] In this application, terms such as "comprising" or "consisting of" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0029] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0030] Terms such as "first" or "second" may be used to describe various components, but said components should not be limited by said terms. For the sole purpose of distinguishing one component from another, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component.

[0031] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. Conversely, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. Other expressions describing the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way.

[0032] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings.

[0034] FIG. 1 is a perspective view illustrating a contact lens vision inspection device capable of underwater inspection according to an embodiment of the present invention; FIG. 2 is a plan view illustrating a contact lens vision inspection device capable of underwater inspection according to an embodiment of the present invention; FIG. 3 is a perspective view illustrating a first moving part according to an embodiment of the present invention; FIG. 4 is a perspective view illustrating a suction tube and a detachable adjustment part according to an embodiment of the present invention; FIG. 5 is a bottom view illustrating a suction tube and a detachable adjustment part according to an embodiment of the present invention; FIG. 6 is a cross-sectional view illustrating a coupling portion between the suction tube and the end portion of the detachable adjustment part according to an embodiment of the present invention; FIG. 7 is a perspective view illustrating a detachable adjustment part according to an embodiment of the present invention; FIG. 8 is a perspective view illustrating a second jig according to an embodiment of the present invention; FIG. 9 is a perspective view illustrating a second receiving hole according to an embodiment of the present invention; FIG. 10 is a cross-sectional view illustrating a second receiving hole according to an embodiment of the present invention; FIG. 11 is a detachable adjustment part according to an embodiment of the present invention These are side and bottom views to illustrate the attachment state of the contact lens.

[0035] Referring to FIGS. 1 to 10, a contact lens vision inspection device (1000) capable of underwater inspection according to an embodiment of the present invention may include a first jig (10), a second jig (20), a third jig (30), a first moving part (100), a vision inspection part (200), and a second moving part (300).

[0036] The first jig (10) has one or more first receiving holes formed therein capable of receiving a contact lens, and the first receiving holes may be filled with water. For example, the first receiving holes formed in the first jig (10) may have a concave cross-section and may be filled with water, and the contact lens may be positioned within the first receiving holes so that its convex side faces downward. Since such a first jig (10) is identical to a jig used for storing existing contact lenses, further details will be omitted.

[0037] The second jig (20) has one or more second receiving holes (24) formed therein that can accommodate a contact lens, and the second receiving holes (24) can be filled with water. The second jig (20) is a jig used for vision inspection of a contact lens and will be described in detail below.

[0038] The third jig (30) has one or more third receiving holes formed therein capable of receiving a contact lens, and the third receiving holes may be filled with water. Since the third jig (30) has the same structure as the first jig (10) described above, the description of the third jig (30) will be replaced with the description of the first jig (10).

[0039] The first moving part (100) can move a contact lens received in the first jig (10) to the second jig (20) by attaching it.

[0040] For example, the first moving part (100) can move along the first moving rail (42) and the second moving rail (44), and can attach and detach contact lenses through the suction tube (110).

[0041] The first moving rail (42) is arranged in the longitudinal direction so that the first moving part (100) can move along the longitudinal direction, and the second moving rail (44) is arranged in the transverse direction so that the first moving part (100) can move along the transverse direction.

[0042] The first moving part (100) can be placed on the first jig (10) while moving along the first moving rail (42) and the second moving rail (44). Additionally, the first moving part (100) can be placed on the second jig (20) while moving along the first moving rail (42) and the second moving rail (44).

[0043] For example, the first moving part (100) can attach a contact lens received in the first jig (10) through the suction tube (110), then position the end of the suction tube (110) into the second receiving hole (24) of the second jig (20) filled with water, and then detach the contact lens so that the contact lens can be received in the second receiving hole (24).

[0044] The suction tube (110) can be connected to a water pump (150), and the contact lens contained in the first jig (10) can be attached by the suction tube (110) sucking water through the water pump (150). When using an air vacuum pump capable of sucking air, water in the first receiving hole of the first jig (10) is sucked through the suction tube (110), and the air vacuum pump may become contaminated by water or the suction power of the air vacuum pump may decrease due to water penetration, so it is preferable to use a water pump (150) instead of an air vacuum pump.

[0045] A discharge hose is connected to the water pump (150), and the sucked water can be discharged to the outside through the discharge hose.

[0046] For example, the first moving part (100) may include a suction tube (110) and a detachable adjustment part (130).

[0047] The suction tube (110) can suck in a contact lens and may be one or more.

[0048] The detachable adjustment part (130) is connected to the end of the suction tube (110) in a manner that wraps around the end of the suction tube (110), and can adjust the degree of attachment of the contact lens when the contact lens is sucked through the suction tube (110) to facilitate the detachment or attachment of the contact lens.

[0049] The detachable adjustment part (130) may be connected to the end portion of the suction tube (110) in a manner that wraps around the end portion of the suction tube (110), and may have an insertion part (134) into which the suction tube (110) can be inserted. For example, there may be one or more insertion parts (134).

[0050] When the first moving part (100) sucks in a contact lens using only the end portion of the suction tube (110) and attempts to detach the contact lens by positioning it into the second receiving hole (24) of the second jig (20) filled with water, a problem arises in which the contact lens attached to the end portion of the suction tube (110) is not easily detached.

[0051] In addition, when the contact lens is removed from the second receiving hole (24) filled with water, the convex side of the contact lens may not be positioned facing downward due to the buoyancy of the water, or the contact lens may be attached to the inner surface of the second receiving hole (24), resulting in a problem where the vision inspection cannot be performed with the contact lens positioned in the correct position.

[0052] The advantage of the present invention is that, in order to solve the above problem, the detachable adjustment part (130) is configured to wrap around the end portion of the suction tube (110), thereby making it easy to attach and detach the contact lens.

[0053] Since the contact lens is made of a thin film of a flexible material and is easily damaged, it is necessary to make the detachable adjustment part (130) that contacts the contact lens also of a flexible material so that damage does not occur to the contact lens. To this end, silicone material may be used for the detachable adjustment part (130).

[0054] The detachable adjustment part (130) can facilitate the attachment and detachment of the contact lens and can position the contact lens in the correct position and direction within the second receiving hole (24).

[0055] For example, the detachable adjustment part (130) may have the shape of a gear and may have one or more insertion parts (132) into which the suction tube (110) can be inserted.

[0056] By making the detachable adjustment part (130) have the shape of a gear, it is possible to prevent all parts of the contact lens that come into contact with the detachable adjustment part (130) from being in close contact, thereby making it easier to attach and detach the contact lens. In addition, because it has the shape of a gear, the contact area between the contact lens and the detachable adjustment part (130) can be optimized.

[0057] For example, the detachable adjustment part (130) has a hollow (132) formed therein and is shaped like a gear with six teeth, and the three insertion parts (134) into which the suction tube (110) can be inserted may be formed in a shape that surrounds the hollow (132) at the center.

[0058] A hollow (132) is formed so that fluid can move to the central part of the detachable control part (130), and this configuration facilitates the attachment and detachment of the detachable control part (130) and the contact lens.

[0059] The second jig (20) can be configured to be movable. For example, the second jig (20) may be connected to a chain and moved according to the movement of the chain, but in addition, the second jig (20) may be installed on a conveyor belt and move along the conveyor belt, and there are no restrictions on the method of movement.

[0060] For example, when the second jig (20) moves the contact lens attached by the first jig (100) from the first jig (10) to the second receiving hole (24) of the second jig (20) at a location close to the first moving part (100), the second jig (20) can move to the location where the vision inspection part (200) is located.

[0061] The vision inspection unit (200) can inspect the contact lens in the water state contained in the second jig (20) using vision to determine whether it is a good product or a defective product.

[0062] For example, when the second jig (20) moves to the lower part of the vision inspection unit (200), the vision inspection unit (200) can inspect the contact lens in the water state contained in the second jig (20) using vision and determine whether the contact lens is a good product or a defective product by comparing it with basic information corresponding to a good product.

[0063] In this way, result data regarding good and defective contact lenses determined through the vision inspection unit (200) can be continuously accumulated, and by using the accumulated data, the accuracy of the vision inspection unit (200) in determining good and defective products can be increased.

[0064] The present invention can determine whether a contact lens in water is good or defective through a vision inspection unit (200), and for this purpose, the second jig (20) may have the following configuration.

[0065] The second jig (20) may include a plate (22) and a second receiving hole (24). For example, the second receiving hole (24) may be combined with the plate (22) in a manner such that it is inserted and fixed to the plate (22).

[0066] For vision inspection, light must pass through the second receiving hole (24), so the second receiving hole (24) must be made of a transparent material. For example, the second receiving hole (24) may be made of a flexible and transparent polyethylene (PE) material.

[0067] The second receiving portion (24) may include an upper retaining projection (24-2) having an upper hollow formed therein, a lower wall (24-4) extending downward from the upper retaining projection (24-2) to form a lower hollow, and a transparent plate (24-6) having a convex shape downward between the upper retaining projection (24-2) and the lower wall (24-4).

[0068] The lower wall (24-4) of the second receiving hole (24) may have a shape that protrudes further downward than the transparent plate (24-6). This is to prevent the light source irradiated into the second receiving hole (24) from being reflected by the transparent plate (24-6), which could result in insufficient light being irradiated or scattering, thereby affecting the vision inspection of the contact lens inside the second receiving hole (24) filled with water.

[0069] The second moving unit (300) can attach a contact lens that has been determined to be a good product through the vision inspection unit (200) among the contact lenses received in the second jig (20) and move it to the third jig (30). Since the structure and operation method of the second moving unit (300) correspond to the structure and operation method of the first moving unit (100), a detailed description will be omitted.

[0071] Although embodiments according to the present invention have been described above, they are merely illustrative and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the following claims. Explanation of the symbols

[0073] 1000: Contact lens vision inspection device capable of underwater inspection 10: First jig 20: Second jig 30: Third jig 100: First moving part 200: Vision inspection part 300: Second moving part

Claims

Claim 1 A first jig having one or more first receiving holes formed therein capable of receiving a contact lens, wherein the first receiving holes can be filled with water; a second jig having one or more second receiving holes formed therein capable of receiving a contact lens, wherein the second receiving holes can be filled with water; a third jig having one or more third receiving holes formed therein capable of receiving a contact lens, wherein the third receiving holes can be filled with water; a first moving part capable of attaching the contact lens received in the first jig and transferring it to the second jig; and a vision inspection part capable of inspecting the contact lens in a state submerged in water received in the second jig using vision to determine whether it is a good product or a defective product; A contact lens vision inspection device capable of underwater inspection, comprising: a second moving part capable of attaching and transferring a contact lens determined to be a good product through the vision inspection part among the contact lenses received in the second jig to the third jig; wherein the second receiving hole is made of a transparent material and includes an upper locking projection having an upper hollow formed therein; a lower wall extending downward from the upper locking projection to form a lower hollow; and a transparent plate having a convex shape in the downward direction between the upper locking projection and the lower wall. Claim 2 A contact lens vision inspection device capable of underwater inspection, wherein the first moving part comprises: one or more suction tubes capable of sucking in a contact lens; and a detachment control part connected to the end portion of the suction tube in a manner that wraps around the end portion of the suction tube, and capable of facilitating the detachment or attachment of the contact lens by adjusting the degree of attachment of the contact lens when the contact lens is sucked in through the suction tube. Claim 3 A contact lens vision inspection device capable of underwater inspection, wherein the detachable adjustment part is in the shape of a gear and has one or more insertion parts formed into which the suction tube can be inserted. Claim 4 A contact lens vision inspection device capable of underwater inspection, wherein the detachable adjustment part is made of a flexible material, has a hollow formed therein, and has a gear shape with six teeth, and the three insertion parts into which the suction tube can be inserted are formed in a shape surrounding the hollow part at the center. Claim 5 delete Claim 6 A contact lens vision inspection device capable of underwater inspection, wherein, in claim 1, the lower wall of the second receiving hole has a shape that protrudes further downward than the transparent plate.

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