WO2016175619A1 - Procédé de fabrication d'une lentille de contact bloquant la lumière bleue et lentille de contact bloquant la lumière bleue ainsi fabriquée - Google Patents

Procédé de fabrication d'une lentille de contact bloquant la lumière bleue et lentille de contact bloquant la lumière bleue ainsi fabriquée Download PDF

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Publication number
WO2016175619A1
WO2016175619A1 PCT/KR2016/004560 KR2016004560W WO2016175619A1 WO 2016175619 A1 WO2016175619 A1 WO 2016175619A1 KR 2016004560 W KR2016004560 W KR 2016004560W WO 2016175619 A1 WO2016175619 A1 WO 2016175619A1
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WO
WIPO (PCT)
Prior art keywords
blue light
light blocking
lens
thin film
manufacturing
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PCT/KR2016/004560
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English (en)
Korean (ko)
Inventor
차병열
Original Assignee
재단법인김해시차세대의생명융합산업지원센터
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Publication of WO2016175619A1 publication Critical patent/WO2016175619A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms

Definitions

  • the present invention relates to a method for manufacturing a blue light blocking contact lens and a blue light blocking contact lens manufactured by the manufacturing method, and more particularly, to prepare a blue light blocking thin film in advance, and to prepare the blue light blocking thin film to be embedded in the lens.
  • Light is a kind of electromagnetic waves and includes visible light (380 nm to 780 nm), ultraviolet light (380 nm or less), and infrared light (700 nm or more), and also includes X-rays and gamma rays.
  • Visible light is purple light (approximately 380 nm) to red light (approximately 700 nm), which means the wavelength range that humans can see.
  • blue light is violet light and has high refractive power and high dispersibility. Chromatic aberration occurs in the eye and causes focus in front of the retina, which reduces the image sharpness and causes eye fatigue.
  • the cells become insensitive until recovered, which is a metabolic process. Absorption of the blue light has been shown to reverse the recovery process early, and this early reversal has been studied to increase the risk of damage and cause the accumulation of pigment lipofuscin in the retina.
  • the accumulation of lipofuscin occurs in the retinal pigment epithelial (RPE) layer, where the extracellular drusen aggregates in the RPE layer due to excessive amounts of lipofucin, and the drusen causes the RPE layer to It is known to cause damage or death of these cells by interfering with or blocking the provision of nutrients to the receptor.
  • RPE retinal pigment epithelial
  • the blue light since the blue light has a high energy and a high permeability, the blue light has a strong irritation to the optic nerve, thereby increasing the eye fatigue.
  • the electromagnetic wave shielding film for mobile phones which is 20-1999-0039927, has been devised, which is a shielding plate incorporating a shielding pad incorporating a copper pad coated with a fiber fabric having a predetermined mesh between two transparent synthetic resin films.
  • the adhesive layer is attached to the front of the mobile phone by the adhesive layer adhered to the rear plate of the shielding plate, the shielding plate is a transparent material through which the inside is transparent, and the receiving hole is drilled to have a predetermined diameter and arrangement to correspond to the speaker hole of the mobile phone in the upper center.
  • the lower center has a structure in which the receiving hole is perforated to have a predetermined diameter and arrangement to correspond to the transmitting hole of the mobile phone, and blocks harmful electromagnetic waves emitted from the front keypad and the handset of the mobile phone during handset. .
  • a contact lens having a conventional blue light blocking function has a colorant directly contacting the eye, and when applied to the eye, the eye is impaired (Korea Patent Publication No. 10-2009-0036122), or a dye made of particles is manufactured to have mobility inside the lens. (Korean Patent No. 10-1190303) There was a problem that the blue light blocking effect is low or the elution of the dye is concerned. In addition, as disclosed in the Republic of Korea Patent Registration No.
  • the present invention is to solve the above problems, by manufacturing a blue light blocking thin film in advance to suppress the phenomenon that the tint portion in the streamlined mold edge portion during the manufacturing process, and the blue light blocking thin film is embedded in the lens by the user
  • a method for manufacturing a blue light blocking contact lens that does not directly touch the eye when wearing the blue light blocking thin film when wearing.
  • the blue light blocking part including the blue light is embedded in the lens.
  • the thickness of the blue light blocking thin film of the second step may provide a method for manufacturing a blue light blocking contact lens in which a blue light blocking portion having a thickness of 100nm to 50 ⁇ m embedded in the lens.
  • the lens forming composition is 1 to 7 parts by weight of styrene per 100 parts by weight of the monomer mixture, 0.1 to 3 parts by weight crosslinking agent, and 0.1 to 0.5 initiator It is possible to provide a method for manufacturing a blue light blocking contact lens having a blue light blocking part including a weight part embedded in the lens.
  • the method of manufacturing a blue light blocking contact lens having a blue light blocking part embedded in the lens including the step of leaving the upper mold after the fifth step, and processing the second thin film lens surface using a cutting shelf. Can provide.
  • a method of manufacturing a blue light blocking contact lens having a blue light blocking part embedded in the lens including the step of irradiating ultraviolet rays after the first step or after the fifth step.
  • the present invention may also provide a blue light blocking contact lens in which the blue light blocking part manufactured by any one of the above manufacturing methods is embedded in the lens to solve the above problems.
  • a blue light blocking contact lens having a blue light blocking unit having a distance of 2 to 10 mm from a center of the blue light blocking contact lens to the blue light blocking unit may be embedded in the lens.
  • the blue light blocking thin film may be manufactured in advance, thereby preventing a phenomenon in which the color tone part is agglomerated at the edge portion of the streamlined mold during manufacturing by the existing manufacturing process.
  • the present invention is manufactured so that the blue light blocking thin film is embedded in the lens so that the blue light blocking thin film does not directly contact the eye when worn by the user can feel comfortable without straining the eye when worn.
  • FIG. 1 is a cross-sectional view of a blue light blocking contact lens having a blue light blocking part manufactured according to an embodiment of the present invention.
  • FIG. 2 illustrates a front surface of a blue light blocking contact lens having a blue light blocking part manufactured therein according to an embodiment of the present invention.
  • 3 to 6 illustrate a manufacturing process of a blue light blocking contact lens having a blue light blocking unit embedded therein according to an embodiment of the present invention.
  • the inventors of the present invention can prepare the blue light blocking thin film in advance to suppress the phenomenon that the color tone portion agglomerates at the streamlined mold edge during the manufacturing process, and to manufacture the blue light blocking thin film to be embedded in the lens, the blue light when the user wears In order to confirm that the barrier thin film can be comforted by not directly contacting the eye, the related experiment was repeated.
  • 3 to 6 illustrate a manufacturing process of a blue light blocking contact lens having a blue light blocking unit embedded therein according to an embodiment of the present invention.
  • the present invention comprises a first step of forming a first thin film by applying the lens forming composition to the lower mold; Attaching the blue light blocking thin film to the upper mold; Bonding the blue light blocking thin film to the first thin film; A fourth step of applying the lens forming composition to an upper mold; And a fifth step of stacking the lower mold to which the first thin film is attached to the upper mold of the fourth step and polymerizing the composition for forming a lens to form a second thin film, the blue light blocking part having the blue light blocking part embedded therein. It is possible to provide a method for manufacturing a contact lens.
  • the method may further include irradiating ultraviolet rays after the first and fifth steps, and preferably, 20 to 70 minutes of ultraviolet rays until the polymerization rate of the lens forming composition is 90% or more. You can investigate.
  • the ultraviolet irradiation is for forming the first thin film and the second thin film, and may be performed under anoxic conditions, and preferably under inert gas conditions such as nitrogen or argon.
  • a first step of forming a first thin film by applying a lens forming composition to a lower mold may be provided.
  • the lens forming composition may include 1 to 7 parts by weight of styrene, 0.1 to 3 parts by weight of a crosslinking agent, and 0.1 to 0.5 parts by weight of an initiator per 100 parts by weight of the monomer mixture.
  • 1 to 7 parts by weight of styrene may be copolymerized per 100 parts by weight of the monomer mixture, and 0.3 parts by weight of crosslinking agent and 0.1 parts by weight of initiator may be added, respectively.
  • Patent 3,391,224 discloses a composition in which a polyester is blended with 5-20% by weight of methyl methacrylate and less than 5% by weight of styrene to produce a thermoset product that can be used to make ophthalmic lenses.
  • Patent 3,513,224 discloses about 12 to 70 to 75% by weight of specific unsaturated polyesters formed by reacting fumaric acid with triethylene glycol and 2,2-dimethyl-1,3-propanediol (or known as neopentyl glycol).
  • a composition is blended with from 18 to 18 weight percent styrene and from 8 to 12 weight percent ethylene glycol dimethacrylate.
  • Styrene increases the refractive index to about 1.52, and ethylene glycol dimethacrylate reduces the degree of fracture of the polymer.
  • the crosslinking agent cross-links the monomer mixture in the composition for forming the lens upon UV irradiation and contributes to the formation of the first thin film and the second thin film, and when the crosslinking agent is included in less than 0.1 part by weight, the effect as a binder may be insignificant. If the content exceeds 3 parts by weight, the elasticity and moisture content of the contact lens may be reduced.
  • the said 1st thin film is a form which does not start polymer polymerization.
  • the first thin film may have a form in which the lens forming composition is coated, and as described below, the lower mold having the first thin film attached to the upper mold coated with the polymer forming composition is laminated in the fifth step. It is preferable to start the post-polymerization.
  • a second step of attaching the blue light blocking thin film to the upper mold and a third step of bonding the blue light blocking thin film to the first thin film may be provided.
  • the blue light blocking thin film may block transmission of a wavelength of 380 nm to 520 nm which gives strong stimulation to the optic nerve, and the thickness of the blue light blocking thin film may be adjusted according to the refractive index of the contact lens between 100 nm and 50 ⁇ m. If the thickness of the blue light blocking thin film is less than 100 nm, the economical efficiency of the manufacturing process may be a problem. If the thickness of the blue light blocking thin film is greater than 50 ⁇ m, the contact lens may expand, resulting in a contact lens having a different refractive index than that of the intended manufacturing process.
  • the blue light blocking thin film may be formed at a wider area than the iris area, and the distance from the center of the blue light blocking contact lens to the blue light blocking thin film may be 2 to 10 mm.
  • the distance to the blue light blocking thin film is less than 2 mm, it may obstruct the visual field by covering a transparent part in the center, and when it exceeds 10 mm, the blue light blocking thin film may be too wider than the iris area, and thus, it may be difficult to fully exhibit the blue light blocking function.
  • the blue light blocking thin film may be colored with a blue light blocking pigment on a thin film including any one or a combination thereof selected from the group consisting of polystyrene, polyethylene, polypropylene, and polyvinylchloride. Can be formed.
  • the blue light blocking pigment may be BPI filter vision 450, BPI diamond dye 500, or Iron Oxides (Red) 21cfr No.73.3125, any one selected from the group consisting of polystyrene, polyethylene, polypropylene, and polyvinyl chloride.
  • the blue light blocking thin film may be formed by immersing a thin film including one or a combination thereof in a heated color complex including a dye solution containing the blue light blocking dye for a period of time.
  • the blue light blocking thin film may be manufactured in a form in which an optical zone (OZ) is removed.
  • the optical zone refers to a circular region of a portion called the pupil that is on the center of the human iris, the optical zone may be a distance of 2mm to 10mm from the center of the blue light blocking thin film, the shape is not particularly limited, It is preferred to be circular or elliptical, similar to the pupil form.
  • a fifth step of forming a thin film may be provided.
  • the lens forming composition used in the fourth step may be the same as the lens forming composition used in the first step, and the type and content of the composition are the same as described above.
  • the blue light blocking thin film is embedded in the contact lens by stacking the lower mold having the blue light blocking thin film attached to the first thin film on the upper mold to polymerize the lens forming composition applied in the fourth step.
  • the second thin film may be manufactured in the form of a mold, and the shape of the second thin film is as shown in FIG. 6.
  • the lower mold is laminated on the upper mold to polymerize and bond the polymer at a portion where the first thin film and the second thin film are in contact with each other, and the polymerization reaction proceeds while the viscosity of the polymer increases.
  • the composition for forming a lens and the first thin film may form one second thin film.
  • the present invention may also provide a method for manufacturing a contact lens in which a blue light blocking part is embedded in the lens, including the step of leaving the upper mold after the fifth step and processing the lens surface by using a cutting lathe.
  • the surface of the contact lens can be processed using the cutting lathe, and the portion processed with the cutting lathe is smoothly formed through the front surface grinding and the edge grinding, and then separated from the lower mold, as shown in FIGS. 1 and 2.
  • the blue light blocking unit may form a contact lens embedded in the lens.
  • the present invention can also provide a contact lens in which the blue light blocking unit manufactured by the manufacturing method is embedded in the lens.
  • FIG. 1 is a cross-sectional view of a blue light blocking contact lens having a blue light blocking part manufactured according to an embodiment of the present invention
  • FIG. 2 is a blue light blocking part containing a blue light blocking part manufactured according to an embodiment of the present invention. The front side of a contact lens is shown, respectively.
  • the blue light blocking unit may have a thickness of 100 nm to 50 ⁇ m.
  • the thickness of the blue light blocking thin film is less than 100 nm, it may be difficult to manufacture, and thus the economics of the manufacturing process may be a problem.
  • the distance from the center of the blue light blocking contact lens to the blue light blocking part may be 2 mm to 10 mm.
  • the distance to the blue light blocking thin film is less than 2 mm, it may obstruct the visual field by covering a transparent part in the center, and when it exceeds 10 mm, the blue light blocking thin film may be too wider than the iris area, and thus, it may be difficult to fully exhibit the blue light blocking function.
  • the present invention can suppress the phenomenon in which the color tone portion agglomerates in the streamlined mold edge part by manufacturing the blue light blocking thin film in advance, and the blue light blocking thin film when the lens is worn by manufacturing the blue light blocking thin film to be embedded in the lens. It can be said that the industrial use is very useful in that it does not directly touch the eye so that the user can feel comfort without burdening the eye.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention concerne : un procédé de fabrication d'une lentille de contact comprenant une partie bloquant la lumière bleue incorporée à l'intérieur de la lentille ; et une lentille de contact bloquant la lumière bleue fabriquée par ledit procédé. L'invention porte plus particulièrement sur un procédé de fabrication d'une lentille de contact comprenant une partie bloquant la lumière bleue incorporée à l'intérieur de la lentille, le procédé permettant d'éviter un phénomène de regroupement d'une partie de couleur au niveau de la zone de bord d'un modèle profilé lors d'un procédé de fabrication, car un film mince bloquant la lumière bleue est fabriqué à l'avance. Ladite lentille n'exerce pas de contrainte sur le globe oculaire et elle est confortable à porter car le film mince bloquant la lumière bleue ne vient pas directement en contact avec le globe oculaire lorsqu'un utilisateur porte la lentille, puisque ledit film mince bloquant la lumière bleue est fabriqué de manière à être intégré à l'intérieur de la lentille. L'invention porte également sur une lentille de contact bloquant la lumière bleue fabriquée par le procédé de fabrication.
PCT/KR2016/004560 2015-04-30 2016-04-29 Procédé de fabrication d'une lentille de contact bloquant la lumière bleue et lentille de contact bloquant la lumière bleue ainsi fabriquée WO2016175619A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150061219A KR20160129305A (ko) 2015-04-30 2015-04-30 청색광 차단 콘택트 렌즈의 제조방법 및 상기 제조방법에 의해 제조된 청색광 차단 콘택트 렌즈
KR10-2015-0061219 2015-04-30

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10935695B2 (en) 2018-03-02 2021-03-02 Johnson & Johnson Vision Care, Inc. Polymerizable absorbers of UV and high energy visible light
US11072137B2 (en) 2018-10-15 2021-07-27 Argos Vision Inc. Methods of forming contact lenses to reduce the transmittance of light
CN113717617A (zh) * 2021-08-31 2021-11-30 太湖金张科技股份有限公司 一种用于微量涂布的抗蓝光涂料
US11543683B2 (en) 2019-08-30 2023-01-03 Johnson & Johnson Vision Care, Inc. Multifocal contact lens displaying improved vision attributes
US11958824B2 (en) 2019-06-28 2024-04-16 Johnson & Johnson Vision Care, Inc. Photostable mimics of macular pigment
US11993037B1 (en) 2018-03-02 2024-05-28 Johnson & Johnson Vision Care, Inc. Contact lens displaying improved vision attributes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102079998B1 (ko) * 2019-07-09 2020-02-21 주식회사 인터로조 블루라이트 차단 콘택트렌즈 및 이의 제조 방법

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KR200406814Y1 (ko) * 2005-11-02 2006-01-24 이인원 자외선차단 기능을 갖는 콘택트렌즈
KR100593273B1 (ko) * 1997-09-04 2006-06-26 시그넷 아모라이트, 인코포레이티드 광중합된 폴리에스테르의 고 굴절률 안과용 렌즈의 제조방법
WO2009044853A1 (fr) * 2007-10-04 2009-04-09 Menicon Co., Ltd. Colorant pour lentille oculaire, matériau pour lentille oculaire, procédé de fabrication de lentille oculaire et lentille oculaire
KR20090036122A (ko) * 2006-06-29 2009-04-13 존슨 앤드 존슨 비젼 케어, 인코포레이티드 광 차단 환을 갖는 콘택트 렌즈
KR20150011390A (ko) * 2012-06-27 2015-01-30 가부시키가이샤 메니콘네쿠토 착색 콘텍트 렌즈 및 그 제조 방법

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KR100593273B1 (ko) * 1997-09-04 2006-06-26 시그넷 아모라이트, 인코포레이티드 광중합된 폴리에스테르의 고 굴절률 안과용 렌즈의 제조방법
KR200406814Y1 (ko) * 2005-11-02 2006-01-24 이인원 자외선차단 기능을 갖는 콘택트렌즈
KR20090036122A (ko) * 2006-06-29 2009-04-13 존슨 앤드 존슨 비젼 케어, 인코포레이티드 광 차단 환을 갖는 콘택트 렌즈
WO2009044853A1 (fr) * 2007-10-04 2009-04-09 Menicon Co., Ltd. Colorant pour lentille oculaire, matériau pour lentille oculaire, procédé de fabrication de lentille oculaire et lentille oculaire
KR20150011390A (ko) * 2012-06-27 2015-01-30 가부시키가이샤 메니콘네쿠토 착색 콘텍트 렌즈 및 그 제조 방법

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10935695B2 (en) 2018-03-02 2021-03-02 Johnson & Johnson Vision Care, Inc. Polymerizable absorbers of UV and high energy visible light
US11820899B2 (en) 2018-03-02 2023-11-21 Johnson & Johnson Vision Care, Inc. Polymerizable absorbers of UV and high energy visible light
US11993037B1 (en) 2018-03-02 2024-05-28 Johnson & Johnson Vision Care, Inc. Contact lens displaying improved vision attributes
US11072137B2 (en) 2018-10-15 2021-07-27 Argos Vision Inc. Methods of forming contact lenses to reduce the transmittance of light
US11958824B2 (en) 2019-06-28 2024-04-16 Johnson & Johnson Vision Care, Inc. Photostable mimics of macular pigment
US11543683B2 (en) 2019-08-30 2023-01-03 Johnson & Johnson Vision Care, Inc. Multifocal contact lens displaying improved vision attributes
CN113717617A (zh) * 2021-08-31 2021-11-30 太湖金张科技股份有限公司 一种用于微量涂布的抗蓝光涂料

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