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WO2018190467A1 - Procédé de fabrication de microlentilles et microlentilles fabriquées par ce procédé - Google Patents

Procédé de fabrication de microlentilles et microlentilles fabriquées par ce procédé Download PDF

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Publication number
WO2018190467A1
WO2018190467A1 PCT/KR2017/006569 KR2017006569W WO2018190467A1 WO 2018190467 A1 WO2018190467 A1 WO 2018190467A1 KR 2017006569 W KR2017006569 W KR 2017006569W WO 2018190467 A1 WO2018190467 A1 WO 2018190467A1
Authority
WO
WIPO (PCT)
Prior art keywords
micro lens
mold
microlens
adhesive layer
array
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/006569
Other languages
English (en)
Korean (ko)
Inventor
강상도
권형준
백승준
오승근
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MPNICS Co Ltd
Original Assignee
MPNICS Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020170046031A external-priority patent/KR101812643B1/ko
Application filed by MPNICS Co Ltd filed Critical MPNICS Co Ltd
Publication of WO2018190467A1 publication Critical patent/WO2018190467A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/04—Cutting or splitting in curves, especially for making spectacle lenses
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J191/00—Adhesives based on oils, fats or waxes; Adhesives based on derivatives thereof
    • C09J191/06—Waxes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses

Definitions

  • the present invention relates to a method for manufacturing a microlens and a microlens manufactured by the method, wherein the microlens array is formed by fixing a microlens array on which a microlens layer protrudes onto a substrate by an adhesive layer and then vertically cutting the optical lens in a direction of an optical axis.
  • the present invention relates to a method for manufacturing a microlens capable of maximizing a manufacturing efficiency of the microlens, improving assembly reliability of the microlens, and minimizing defects in a product, and a microlens manufactured by the manufacturing method.
  • Optical lenses are an important component of next-generation optical systems such as optical communication, optical information storage, sensors, and displays.
  • optical communication field In the optical communication field, it has been applied to a multi-channel transmission / reception module that influences high-capacity optical efficiency and is used as a core component of high-capacity, efficiency and multi-channelization.
  • the optical information storage device may be applied to an optical recording information field such as CD and DVD which is responsible for data recording, and may be applied to high efficiency optical / image sensor applications by improving light sensitivity in the sensor area.
  • an optical recording information field such as CD and DVD which is responsible for data recording
  • the display area may be applied to the backlight spherical component and the laser projection unit together with the polygon mirror to be used as an image realization component field.
  • 1 is a view for explaining a mold for manufacturing a conventional micro lens.
  • a mold 10 for manufacturing a conventional micro lens has a concave or concave groove portion 11a having a spherical or aspherical surface formed on a lower surface thereof, and having an upper mold 11 and a base which are movable in a vertical direction. It is provided on the member 12 and the upper surface of the base member 12, the upper surface comprises a lower mold 13 formed with a recessed groove portion 13a of a rectangular shape, the concave of the lower mold 13 After the lens raw material is disposed inside the groove 13a, the upper mold 11 is pressed to manufacture a micro lens.
  • microlens 10 ⁇ manufactured by the mold 10 for manufacturing a conventional microlens has a problem that the surface of the side surfaces 10 ⁇ -1 is smooth, so that the adhesive force is reduced when installed on the optical component.
  • the microlenses 10 ⁇ manufactured by the mold 10 for manufacturing the conventional microlenses are manufactured in a mold manner, the edges of the microlenses 10 ⁇ are manufactured in a rounded shape, so that the laser diode 30 and When attached on the optical component 20 while being spaced a predetermined distance, there is a problem that the mounting area is limited and the assembly reliability is low.
  • the present invention has been made to solve such a problem, and an object of the present invention is to use a microlens array to vertically cut neighboring lens layers in the optical axis direction, thereby improving the microlens manufacturing efficiency. It is to provide a manufacturing method.
  • another object of the present invention is that as the microlens array is cut, the surface roughness of the cutting surface (position to be interviewed at the installation position) is rough, thereby increasing the adhesive force on the optical component, and the entire surface of one side of the microlens as the cutting surface.
  • the area is attached to the upper surface of the optical component, to provide a method for manufacturing a micro lens that can improve the assembly reliability of the micro lens.
  • the present invention provides a micro lens array preparing step of preparing a micro lens array protruding a plurality of micro lens layer spaced apart from each other by a predetermined interval; An adhesive layer applying step of applying an adhesive layer on the plate-shaped substrate; The microlens array is placed on top of the adhesive layer and the adhesive layer is cured to fix the microlens array on the substrate, wherein the adhesive layer fixes the microlens array to seal a space between the substrate and the microlens array.
  • the microlens array includes an upper surface protruding microlens array having the microlens layers formed on an upper surface thereof, or an upper surface and a lower surface of the microlens array.
  • the micro lens layers are formed, wherein the first micro lens layers formed on the upper surface and the second micro lens layers formed on the lower surface are double-sided protruding micro lens arrays formed at positions opposite to each other on the optical axis. It provides a method of manufacturing.
  • the first micro lens layer and the second micro lens layer are spherical or aspheric.
  • the preparing of the micro lens array may include a mold preparing step of preparing a first mold having a plurality of grooves formed at different positions on one side thereof in a plate shape, and a second mold having one side flat in the shape of a plate; Positioning a lens raw material between one side of the first mold and one side of the second mold; Pressing the first mold and the second mold; Obtaining a micro lens array having a micro lens layer formed on an upper surface thereof.
  • the preparing of the micro lens array may include a first mold having a plurality of first grooves formed at different positions on one side thereof in a plate shape, and a plate shape corresponding to the first mold.
  • first groove portion and the second groove portion are spherical or aspheric.
  • the adhesive layer is an oil wax, an aqueous wax or a UV curable resin.
  • the adhesive layer removing step may be performed by immersing the microlens array attached to the substrate in ethanol or oil to remove the oily wax.
  • the adhesive layer removing step is to immerse the micro lens array adhered to the substrate in distilled water, so that the oily wax is removed.
  • the adhesive layer removing step is to immerse the microlens array attached to the substrate in acetone, so that the oily wax is removed.
  • the preparing of the microlens array may include forming an antireflective coating layer on at least one of upper and lower surfaces of the microlens array obtained after obtaining the microlens array. It further includes;
  • the present invention is manufactured by a method for manufacturing a micro lens according to the present invention, a rectangular parallelepiped body portion; It further provides a micro lens comprising a; a micro lens layer of spherical or aspherical shape integrally extending on the upper surface or the lower surface of the body portion.
  • the present invention is manufactured by a method for manufacturing a micro lens according to the present invention, a rectangular parallelepiped body portion; A first micro lens layer integrally formed on an upper surface of the body portion and having a spherical or aspherical surface shape; And a second micro lens layer integrally formed on the bottom surface of the body portion and having a spherical or aspherical surface shape.
  • the present invention has the following excellent effects.
  • the manufacturing method of the microlenses of the present invention by using a top surface or a double-sided protruding microlens array, by vertically cutting between adjacent lens layers in the optical axis direction, it is possible to easily produce a plurality of microlenses.
  • the manufacturing method of the microlens of the present invention as the front surface or the front surface of one side of the double-sided protruding microlens array is stably bonded to the substrate by the adhesive layer, vertical cutting is easily performed in the optical axis direction. It has the advantage of minimizing the occurrence of product defects.
  • the surface roughness of the cut surface (the position interviewed with the installation position) is rough, so that the adhesive force is increased on the optical component, and the cut lens is the microlens. Since the entire area of one side of the is attached to the upper surface of the optical component, there is an effect that can improve the assembly reliability of the micro lens.
  • 1 is a view for explaining a mold for manufacturing a conventional micro lens.
  • Figure 2 is a step for explaining a method of manufacturing a top surface protruding micro lens according to an embodiment of the present invention.
  • FIG 3 is a step for explaining a method of manufacturing a double-sided protrusion micro lens according to an embodiment of the present invention.
  • Figure 4 is a step for explaining the step of preparing a top surface protruding micro lens array according to an embodiment of the present invention.
  • FIG. 5 is a step diagram for explaining a step of preparing a double-sided protrusion type micro lens array according to an embodiment of the present invention.
  • Figure 3 is a step for explaining the manufacturing method of the double-sided protruding microlens according to the present invention.
  • a method of manufacturing a micro lens according to an exemplary embodiment of the present invention is a method for manufacturing a top protruding micro lens or a double-sided protruding micro lens by vertically cutting a micro lens array in an optical axis direction.
  • a step first, a step of preparing the micro lens array 110 is performed (S100).
  • the micro lens array 110 may be an upper surface protruding micro lens array or a double sided protruding micro lens array.
  • the upper surface protruding micro lens array is provided in a plate shape, a plurality of micro lens layers 111 spaced apart from each other by a predetermined interval is formed on the upper surface, the lower surface is provided in a flat shape.
  • the double-sided protruding micro lens array is provided in a plate shape, and a plurality of first micro lens layers 111 spaced apart from each other by a predetermined interval is formed on an upper surface thereof, and the first micro lens layer 111 is formed on a lower surface thereof.
  • the second micro lens layer 112 is formed in a shape corresponding to the first micro lens layer 111 at a position corresponding to the first micro lens layer 111. That is, the first micro lens layer 111 and the second micro lens layer 112 are formed in plural in sizes corresponding to each other at positions opposing each other on the optical axis.
  • micro lens layers 111 and 112 may have a spherical shape or an aspheric shape.
  • the adhesive layer 130 is applied to the upper portion of the plate-shaped substrate 120 (S200).
  • the adhesive layer 130 may be an oil wax, an aqueous wax or a UV curable resin.
  • the bottom surface of the micro lens array 110 and the substrate ( 120 is used in such an amount that one layer can be formed so that it is not in direct contact.
  • the prepared micro lens array 110 is placed on the adhesive layer 130 applied on the substrate 120, and the adhesive layer 130 is cured so that the micro lens array 110 is formed of the substrate ( 120 to be fixed on (S300).
  • the adhesive layer 130 is formed to seal the space between the substrate 120 and the micro lens array 110.
  • the load to be pressed may be increased by using a weight member mounted on the micro lens array 110, or the adhesive layer 130 may be cured by using a normal pressing means. have.
  • the entire bottom surface of the micro lens array 110 is adhered onto the substrate 120 by the adhesive layer 130.
  • the adhesive layer when the adhesive layer is an oily wax or an aqueous wax, it is cured by controlling the ambient temperature to correspond to the curing temperature, and when the adhesive layer is a UV curable resin, it is cured by irradiation with ultraviolet rays.
  • the cutting means for cutting the micro lens array 110 is not limited as long as it is a means for easily cutting the micro lens array 110, preferably the area forming the blade is coated with diamond May be a liner b.
  • the cutting position which is a space between the neighboring micro lens layers 111, may be easily changed, the outer size and shape of the micro lens may be freely changed according to the design direction.
  • the microlens array 110 adhered to the substrate 120 is immersed in ethanol or oil to remove the oily wax.
  • the microlens array 110 adhered to the substrate 120 is immersed in distilled water to remove the aqueous wax.
  • the microlens array 110 adhered to the substrate 120 is immersed in acetone to remove the UV curable resin.
  • Figure 4 is a step for explaining the step of preparing a top surface protruding micro lens array according to an embodiment of the present invention, below, preparing a micro lens array according to the present invention with reference to FIG. It will be described in more detail.
  • the microlens array preparation step (S100) is for fabricating a microlens array having a microlens layer 111 spaced apart from each other by a predetermined interval on an upper surface thereof. First, the first mold 210 and the second mold 220 are manufactured. Prepare (S110).
  • the first mold 210 is a plate shape
  • the lower surface is formed with a plurality of grooves 210a at different positions on the lower surface.
  • the second mold 220 is a metal mold having a flat upper surface and a lower surface.
  • the groove portion 210a is preferably formed in a spherical or aspheric shape.
  • the lens raw material 230 is positioned between the lower surface of the first mold 210 and the upper surface of the second mold 220 (S120).
  • the lens raw material 230 is preferably a glass material, but is not limited if the material that can function as an optical lens.
  • the lens raw material 230 is pressed to interview the entire surface of the groove 210a, and the microlens layer 111 corresponding to the groove 210a is formed.
  • the micro lens layer 111 is formed in a spherical shape corresponding thereto, and when the groove portion 210a has an aspherical shape, the micro lens layer 111 has a It is formed in an aspherical shape.
  • microlens array 110 having a plurality of microlens layers 111 formed on an upper surface thereof is obtained (S140).
  • FIG. 5 is a step diagram for explaining a step of preparing a double-sided protrusion type micro lens array according to an embodiment of the present invention, hereinafter preparing a micro lens array according to the present invention with reference to FIG. It will be described in more detail.
  • the microlens array preparation step (S100) is for manufacturing a microlens array in which a plurality of first microlens layers 111 and second microlens layers 112 are formed on upper and lower surfaces, respectively.
  • the mold 210 and the second mold 220 are prepared (S110).
  • the upper surface protruding first mold 210 is a plate shape is a mold formed with a plurality of first grooves 210a at different positions on one side.
  • the second mold 220 is a mold having a plate shape corresponding to the first mold 210, and a plurality of second grooves 220a corresponding to the first grooves 210a are formed.
  • first groove 210a and the second groove 220a may be formed in a spherical or aspheric shape.
  • the lens raw material 230 is positioned between one side of the first mold 210 and one side of the second mold 220 (S120).
  • the lens raw material 230 is preferably a glass material, but is not limited if the material that can function as an optical lens.
  • the lens raw material 230 is pressed to interview the entire surface of the first groove portion 210a and the second groove portion 220a, respectively, and the first groove portion 210a and the second groove portion 220a, respectively.
  • Corresponding first micro lens layer 111 and second micro lens layer 112 are formed.
  • the first micro lens layer 111 and the second micro lens layer 112 have a spherical shape corresponding thereto.
  • the first micro lens layer 111 and the second micro lens layer 112 are formed in an aspherical shape.
  • a microlens array 110 having a plurality of first microlens layers 111 and a plurality of second microlens layers 112 formed on upper and lower surfaces, respectively, is obtained (S140).
  • the antireflective coating layer 240 is applied to at least one of the upper and lower surfaces of the microlens array 110.
  • the anti-reflective coating layer forming step (S150) to be formed may be further performed.
  • the antireflection coating layer is formed after the microlenses are manufactured separately, the antireflection coating must be performed on each microlens. However, the manufacturing efficiency decreases. However, after the antireflection coating is performed on the microlens array, the microlens array is vertically cut in the optical axis direction. When manufacturing a lens has the advantage that can increase the coating efficiency.
  • a plurality of microlenses can be easily manufactured by vertically cutting a neighboring lens layer in an optical axis direction using a microlens array. Since one side of the entire area is stably adhered to the substrate by the adhesive layer, it is easy to vertically cut in the direction of the optical axis has the advantage of minimizing the occurrence of product defects.
  • the present invention further provides a top surface protruding micro lens and a double sided protruding micro lens manufactured by the method of manufacturing a double-sided protruding micro lens according to the present invention.
  • the upper surface protruding microlens 110 ⁇ is integrally formed on the rectangular parallelepiped body portion 110 ⁇ -1 and the upper surface of the body portion 110 ⁇ -1, and has a spherical or aspherical microlens layer 110 ⁇ . -2) is achieved.
  • the double-sided protruding microlens 110 ⁇ extends integrally on a rectangular parallelepiped body portion 110 ⁇ -1 and an upper surface of the body portion 110 ⁇ -1, and has a spherical or aspheric shape first microlens. It is integrally formed on the bottom surface of the layer 110 ⁇ -2 and the body portion 110 ⁇ -1, and includes a second micro lens layer 110 ⁇ -2 having a spherical or aspherical shape.
  • the upper surface protruding microlens or the double-sided protruding microlens 110 ⁇ is plate-shaped optical component 20 while being spaced apart from the laser diode 30 by a predetermined distance so as to align the optical axis with the laser diode 30. It may be provided at the upper surface of the single optical module.
  • the microlens 110 ⁇ according to the present invention since the body portion 110 ⁇ -1 is provided in a rectangular parallelepiped shape, is installed parallel to the optical component 20 without being inclined to facilitate optical axis alignment.
  • the entire surface of one side of the body portion 110 ⁇ -1 is attached to the upper surface of the optical component 20, and as the surface is roughened, the surface roughness of one side of the body portion 110 ⁇ -1 is rough.
  • the adhesive force is increased on the optical component, thereby improving the assembly reliability of the microlens.
  • Microlenses according to the present invention can be used in the next-generation optical systems, such as optical communication, optical information storage device, sensor, display.
  • the collimating lens may be used as a collimating lens for collimating the emitted light by being placed in front of a light source array including a plurality of laser diodes or LEDs.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)

Abstract

La présente invention concerne un procédé de fabrication de microlentille et une microlentille fabriquée par celui-ci et, plus spécifiquement : un procédé de fabrication de microlentille qui peut fixer un réseau de microlentille, qui a une couche de microlentille formée pour faire saillie à partir de celui-ci, sur un substrat au moyen d'une couche adhésive, puis découpe verticalement le réseau de microlentilles vers un axe optique, maximisant ainsi l'efficacité de fabrication d'une microlentille, améliorant la fiabilité d'assemblage de la micro-lentille, et réduisant au minimum l'apparition d'un défaut de produit; et une microlentille fabriquée par le procédé de fabrication.
PCT/KR2017/006569 2017-04-10 2017-06-22 Procédé de fabrication de microlentilles et microlentilles fabriquées par ce procédé Ceased WO2018190467A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20170046030 2017-04-10
KR1020170046031A KR101812643B1 (ko) 2017-04-10 2017-04-10 양면 돌출형 마이크로 렌즈의 제조방법 및 상기 제조방법으로 제조된 양면 돌출형 마이크로 렌즈
KR10-2017-0046031 2017-04-10
KR10-2017-0046030 2017-04-10

Publications (1)

Publication Number Publication Date
WO2018190467A1 true WO2018190467A1 (fr) 2018-10-18

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PCT/KR2017/006569 Ceased WO2018190467A1 (fr) 2017-04-10 2017-06-22 Procédé de fabrication de microlentilles et microlentilles fabriquées par ce procédé

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WO (1) WO2018190467A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040071144A (ko) * 2002-09-25 2004-08-11 세이코 엡슨 가부시키가이샤 적외 차단 필터가 마련된 렌즈 및 그 제조 방법 및 소형카메라
KR20040102553A (ko) * 2003-05-28 2004-12-08 삼성전자주식회사 광결합 렌즈계 및 그 제조 방법
KR20050005357A (ko) * 2003-07-01 2005-01-13 삼성전자주식회사 마이크로렌즈 제작방법 및 이를 이용한 광모듈 제작방법
JP2005043441A (ja) * 2003-07-23 2005-02-17 Ricoh Co Ltd マイクロレンズの製造方法、およびマイクロレンズつき基板、ビーム整形光学素子、光ピックアップ
JP2012198477A (ja) * 2011-03-23 2012-10-18 Fujifilm Corp レンズの製造方法
KR101647181B1 (ko) * 2011-02-28 2016-08-09 호야 가부시키가이샤 광학렌즈

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040071144A (ko) * 2002-09-25 2004-08-11 세이코 엡슨 가부시키가이샤 적외 차단 필터가 마련된 렌즈 및 그 제조 방법 및 소형카메라
KR20040102553A (ko) * 2003-05-28 2004-12-08 삼성전자주식회사 광결합 렌즈계 및 그 제조 방법
KR20050005357A (ko) * 2003-07-01 2005-01-13 삼성전자주식회사 마이크로렌즈 제작방법 및 이를 이용한 광모듈 제작방법
JP2005043441A (ja) * 2003-07-23 2005-02-17 Ricoh Co Ltd マイクロレンズの製造方法、およびマイクロレンズつき基板、ビーム整形光学素子、光ピックアップ
KR101647181B1 (ko) * 2011-02-28 2016-08-09 호야 가부시키가이샤 광학렌즈
JP2012198477A (ja) * 2011-03-23 2012-10-18 Fujifilm Corp レンズの製造方法

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