WO2000012291A1 - Method and device for producing lens - Google Patents

Method and device for producing lens Download PDF

Info

Publication number
WO2000012291A1
WO2000012291A1 PCT/JP1999/004665 JP9904665W WO0012291A1 WO 2000012291 A1 WO2000012291 A1 WO 2000012291A1 JP 9904665 W JP9904665 W JP 9904665W WO 0012291 A1 WO0012291 A1 WO 0012291A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
resin material
manufacturing
mold
molded
Prior art date
Application number
PCT/JP1999/004665
Other languages
French (fr)
Japanese (ja)
Inventor
Takayuki Maruyama
Noriyuki Komatsu
Original Assignee
Specialty Ultravision, Inc.
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
Application filed by Specialty Ultravision, Inc. filed Critical Specialty Ultravision, Inc.
Publication of WO2000012291A1 publication Critical patent/WO2000012291A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • 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
    • B29D11/00009—Production of simple or compound lenses
    • 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
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00278—Lenticular sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses

Definitions

  • the present invention relates to a method and an apparatus for manufacturing a lens, and more particularly to a technique for manufacturing a lens by plastically deforming a resin material.
  • thermoplastic resin sheet is sandwiched between heated upper and lower dies, and the resin sheet is plastically deformed by being pressed while being heated.
  • a method of manufacturing a contact lens in which a molded lens portion is cut out and cut into a lens shape, and thereafter, unnecessary portions are cut or edges are polished.
  • the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a technique capable of improving the productivity of a lens in a manufacturing method of molding a lens by plastically deforming a resin material. It is in.
  • Means taken by the present invention to solve the above problems are: (1) In a method of manufacturing a lens in which a sheet-shaped resin material is molded while being heated to a predetermined temperature while being pressed, a plurality of molds are arranged in a plane direction of the resin material, and a plurality of lens portions are formed. It is characterized by performing molding at the same time.
  • the plurality of mold forming regions are set in the resin material, a plurality of molds are arranged in a plane direction of the resin material, and the molds are simultaneously formed on a plurality of lens portions.
  • the resin material is extruded around the area to be molded at the time of pressurization and the inside of the area to be molded is pressed. Since the resin material is easily drawn into the lens, the lens part can be molded more accurately, without distortion, and quickly, and when multiple lens parts are formed at the same time, adjacent molds are formed. It is possible to reduce the influence of the molding of the lens portion in the predetermined area.
  • the punched portion can be formed by punching a sheet-shaped resin material.
  • a plurality of punching portions be provided around the region to be molded through a bridge portion connecting the region to be molded and the surrounding portion, and in this case, the planar shape becomes rotationally symmetric. It is desirable to form the punched portion as described above.
  • the plurality of molds are configured to individually and independently press the resin material. Since the plurality of molds press the resin material independently, it is possible to reduce the variation in the pressing force and the bias of the hit, and to obtain a high yield. In addition, it is desirable that a non-pressurized region be secured between the plurality of dies to perform the molding. Since the molding is performed while a non-pressurized area is secured between the dies, the followability of the resin material to be molded is improved, and the influence of the surrounding resin material on the molding can be reduced.
  • a positioning portion for positioning the resin material with respect to the mold is provided in advance. Holes and cutouts can be formed as the positioning portions, and it is desirable that these be punched out together with the above-mentioned cutouts.
  • the method further includes a step of simultaneously punching the plurality of molded lens portions with respect to the molded resin material.
  • the molds be simultaneously die-cut, arranged in a plane as they are in the die-cut state, and then transferred to post-processing. In this way, positioning in the post-process becomes easy, automation and mechanization can be easily performed, and handling becomes easy.
  • the mold is designed so that each lens part is left on the lower die of the punching die. It is desirable to transfer to the subsequent process by transferring while maintaining.
  • the method further includes a step of applying a pressing force lower than a maximum value to the resin material at the beginning and end of the molding.
  • a pressing force lower than a maximum value to the resin material at the beginning and end of the molding.
  • a lens manufacturing apparatus which molds a sheet-shaped resin material by pressing it while heating it to a predetermined temperature
  • a plurality of dies arranged in a plane direction on both the front and back sides of the resin material are arranged.
  • a plurality of types It is characterized in that it is configured to perform molding at the same time.
  • the plurality of molds are configured to individually and independently press the resin material.
  • a plurality of molds arranged on at least one side of the molds arranged on both sides of the resin material are mutually connected.
  • a mold is formed by securing a non-pressurized region between the plurality of molds. For example, if a plurality of molds are arranged so as to protrude from the resin material, a non-pressurized area is secured between the molds.
  • the pressing force applied to the resin material by the mold can be changed and controlled over time.
  • the pressing force it is possible to improve the accuracy of the shape of the lens portion, improve the stability of the shape, improve the reproducibility of molding, and reduce variations.
  • a lens manufacturing apparatus for separating a lens portion by punching out a sheet-shaped resin material having a plurality of lens portions formed by pressing while heating to a predetermined temperature
  • the lens unit is configured to be held in the same planar position later. After punching out a plurality of molded lens parts, the plane position is kept as it is, so by moving to the post-process as it is, automation and mechanization of the post-processing become easy, and positioning work is unnecessary And handling becomes easier.
  • the mold is designed so that the lens portion separated by punching remains in the lower mold at the time of punching.
  • FIG. 1 is a process explanatory view (a) to (d) showing an outline of an embodiment of a lens manufacturing method according to the present invention.
  • FIG. 2 is a schematic sectional view showing the structure of the pressurizing device used in the above embodiment.
  • FIG. 3 is a plan view showing a planar shape of the resin sheet before the heat pressing step.
  • FIG. 4 is a graph showing an example of a change with time of the pressing force in the heat pressing step.
  • FIG. 5 is a schematic sectional view showing a state before and after a lens punching step. Explanation of reference numerals
  • FIG. 1 is a process explanatory view showing a schematic process of a method for manufacturing a lens of the present embodiment.
  • the lens material is prepared by mixing a monomer such as a thermoplastic resin into a resin sheet 10 shown in FIG. 1 (a).
  • a monomer such as a thermoplastic resin
  • Resin sheet 10 is a female lower mold made of metal etc. It is placed in a state where it is positioned on 11 and is pressed by a male upper mold 12 made of metal or the like from above to be plastically deformed as shown in Fig. 1 (b).
  • both the upper mold 11 and the lower mold 12 are heated by heat and the like, and the mold release agent is applied to the molding surface. Further, a plurality of sets of the upper mold 11 and the lower mold 12 act on the resin sheet 10. Pressing conditions are appropriately set according to the lens material and the quality of the lens after molding (for example, the thickness of the center of the lens). Apply pressure. Terminate heat pressurization, stop heating, release pressure, and radiate heat by applying cold air to cool. After a few minutes from the end of the thermal pressurization, the temperature drops to near normal temperature, so pull up the upper mold 12 and release it as shown in Fig. 1 (c). In this manner, lens portions 10a are formed at a plurality of positions of the resin sheet 10 by molding. Finally, as shown in FIG. 1 (d), the lens portion 10 a of the molded resin sheet 10 is punched out by a punch 15 and a die 16 of a press machine to separate the lens 14.
  • a part of the resin sheet 10 is plastically deformed by heating and pressing the resin sheet 10 to form a plurality of lens portions 10a having lens surfaces.
  • the plurality of lens portions 10a are simultaneously formed by hot pressing, but in order to reduce the influence of the forming portion due to the deformation of the resin sheet and the movement of the material, particularly the plurality of lens portions are simultaneously formed.
  • Each set of the upper mold 11 and the lower mold 12 is provided with a supporting system and a pressurizing system for each mold independently so as to act on a part of the resin sheet 10 independently of each other. Is preferred.
  • a plurality of lens sections 10a are molded at once by a large integrated mold in which a plurality of molded sections are integrally formed, the processing accuracy of the integrated mold, variation in thickness of the resin sheet, and contact with the resin sheet 10 Pressing conditions, heating conditions, etc. vary for each molding part due to differences in conditions, etc. This is because it becomes difficult to form a perfect lens portion 10a.
  • FIG. 2 is a schematic schematic configuration diagram of a pressurizing device suitable for use in the heat pressurizing step of the present embodiment.
  • a sheet support system 110 for supporting the resin sheet 10 and a lower die support system 1 for mounting and supporting the lower die 11 The upper die 12 is mounted and supported on a pressing plate 102 that is pressed from above with a predetermined pressure on the substrate 101.
  • the mold support system 130 is mounted and fixed.
  • the sheet support system 110 is provided with a mounting frame 111 for mounting the resin sheet 10.
  • the mounting frame 1 1 1 is attached to a plurality of (eg, 4) guide shafts 1 1 2 which are set up almost vertically so as to be able to move up and down.
  • the guide shaft 1 1 2 is inserted and fixed in a support frame 1 1 3 fixed to the substrate 101, and an elastic member 1 1 4 such as a coil spring is loaded around the guide shaft 1 12 and the mounting frame. 11 is urged upward together with the resin sheet 10.
  • a positioning plate 1 2 4 is fixed on the surface of the substrate 101 by a support frame 1 1 3, and the lower die 11 and the lower die 11 are connected to the positioning plate 1 24.
  • the member 1 2 1 is fitted.
  • the mounting member 1 2 1 is connected to the shaft 1 2 2, and the shaft 1 2 2 passes through the board 101 and is supported by the bracket 1 25 mounted on the back of the board 101.
  • the bracket Inside the bracket, the shaft 122 has a flange 123, and an elastic member 126, such as a coil spring, is elastically provided between the flange 123 and the inner surface of the bracket 125. Is equipped.
  • the substrate 101 has a built-in heating heater 128
  • the pressure plate 102 is configured to be able to press the substrate 101 with a pressure value controlled by a known hydraulic mechanism or the like.
  • the upper die 12 is connected to the mounting member 13 1, and the upper die 12 and the mounting member 13 1 are connected to the positioning plate 13 2. I agree.
  • the positioning plate 13 2 is fixed to the substrate 13 4 by the support frame 13 3, and the substrate 13 4 is attached to the pressing plate 102 by the attachment member 135.
  • the substrate 13 4 has a built-in heating heater 1 38.
  • the plurality of lower dies 11 are each configured to independently press a predetermined portion of the resin sheet 10.
  • the lens portion of the resin sheet sandwiched between the lower mold 11 and the upper mold 12 is pressed by the elastic force of the elastic member 126 that balances the pressing force of the pressing plate 102. If the variation in the elastic force of the elastic members 126 is negligible within the range of the variation between the upper and lower parts of the lower mold 11, each lens unit is pressed almost uniformly. Therefore, it is preferable to appropriately set the change characteristic of the elastic force of the elastic member 126 with respect to the possible vertical variation of the lower mold 11.
  • the stretchable stroke of the elastic member 126 is made extremely small as compared with the length of the elastic member 126, and the width of change of the elastic force is made small. It is also possible to increase the extendable stroke of the pressure applied to balance the elastic force by increasing the stretch stroke of 6.
  • the gaps between the lower molds 11 and the upper molds 12 protruding from the resin sheet 10 are simply gaps. Therefore, the pressing force is not applied to the portion of the resin sheet 10 between the dies at the time of pressurization, and the pressurized portion is free. Can be. As a result, the molding of the lens portion is performed with higher precision. Further, the resin sheet 10 is supported so as to be able to move up and down by a mounting frame 111, and is configured so that unnecessary stress and distortion are not applied to the resin sheet 10 when pressurized. The molding state of the lens part can be kept more ideal.
  • brackets 125 are provided with flow paths 125a and 125b to provide hydraulic, pneumatic, and other fluid pressures. Can be added to the lower mold 1 1. These fluid pressures are precisely controlled by a controller (not shown), and supplied from the flow path 125a. W
  • the pressure applied to the resin sheet by the lower mold 11 and the upper mold 12 is accurately determined by the difference between the supplied fluid pressure and the fluid pressure supplied from the flow path 125b. Only one of these channels may be used.
  • FIG. 3 shows a planar shape of the resin sheet 10 before molding.
  • a plurality of positioning holes 10A for positioning the entire sheet are formed in the resin sheet 10 in advance, and these positioning holes 10A correspond to the mounting frame 111 shown in FIG. Fix it by inserting it into the positioning bin (not shown) or by inserting the screw into the mounting frame.
  • a punched portion 10B is formed between each lens portion 10a corresponding to a region to be molded and a non-molded portion 10b around the lens portion 10a. Is preferred.
  • the cutout portion 10B is provided at a predetermined ratio in a portion surrounding the lens portion 10a.
  • the sheet material is drawn inward by the lower die 11 and the upper die 12 or protrudes outward. Since the molding is performed without resistance, the molding accuracy of the lens portion 10a can be increased, and the occurrence of wrinkles, pulling and other distortions of the molded lens portion 10a can be reduced. In particular, since a plurality of lens portions are molded at the same time, the influence of adjacent lens portions can be reduced, and a remarkable effect can be obtained.
  • the shape of the punched portion 10B is arbitrary, and may be any shape as long as the periphery of the lens portion 10a is opened to a certain extent. However, in order to prevent the lens portion 10a from falling off from the resin sheet 10 before molding, it is necessary to provide at least one portion of a bridge portion 10c connected to the surroundings. It is preferable that a plurality of cutout portions 10B are formed around the lens portion 10a. In this case, it is preferable that the cutout portions 10B are formed uniformly (rotationally symmetrically) around the lens portion 10a. In this embodiment, four cutout portions 10B are arranged around the lens portion 10a in a rotationally symmetrical manner, and the space between the cutout portions 10B is made up of four prism portions 10c.
  • the pressing force of the pressure plate 102 is controlled, or the pressure plate 102 is fixed and the flow paths 125 a, 125 b It is preferable that the pressure is changed with time during the thermal pressurization step by controlling the fluid pressure applied from the pressure.
  • FIG. 4 shows an example of a change pattern of the pressing force when the pressing force is changed over time as described above.
  • the pressing force is gradually increased in the initial stage of the thermal pressing, and the pressing force is eventually maintained at the maximum pressing value P M and sufficiently plastically deformed. Reduce to a predetermined low pressure value P () and hold for a long time.
  • the value P M ensures plastic deformation to the desired shape, and a low pressure value P in process C. With this, deformation distortion can be removed slowly.
  • the pressure change speed, pressure value, and time in the above processes A, B, and C are appropriately set so as to obtain optimal lens shape accuracy, shape reproducibility and variation, and quality.
  • the heating may be continued, or the heating may be stopped halfway and the cooling process may be started.
  • the temperature is lowered after the completion of the hot pressing step, the mold is released, and the resin sheet 10 on which each lens portion 10a is formed is separated in the press punching step shown in FIG. 1 (d). .
  • the lens 14 may be pulled out as shown in FIG. 1 (d), but taking into account the subsequent cleaning, polishing, plasma treatment steps, etc., each lens part 10 of the resin sheet 10 is taken into account. It is desirable to arrange the separated lenses 14 in the same arrangement as in a and send them to the next step.
  • FIG. 5 shows a state of a press punching step for maintaining such a lens 14 in the arrangement state of the lens portions 10a.
  • Fig. 5 (a) shows a state in which the resin sheet 1 ⁇ after the hot pressing process is placed on the press die 26, and Fig. 5 (b) shows the completion of the punching process for the resin sheet 10 FIG.
  • the resin sheet 10 having the molded lens portion 10a the curved portion of each lens portion 10a fits into the concave portion 26b formed inside the lens support portion 26a of the die 26. It is placed in such a way that The periphery of the lens support part 26a has a concave shape corresponding to the non-formed part 10b shown in FIG.
  • a groove 26c is provided, and a punch 25 having a shape corresponding to the groove 26c is provided.
  • the punch 25 is lowered to press the resin sheet 10 on the die 26 to separate the lenses 14 as shown in FIG. 5 (b).
  • the process can be completed while each lens 14 is placed on or adhered to the die 26 as it is. Therefore, since each lens 14 can be sent to the next process in the same state as the processing arrangement on the die 26 and various processes can be performed, automation and mechanization are facilitated.
  • the curved portion of the lens portion 10a is fitted into the concave portion 26b on the die 26, but another positioning means such as using the positioning hole 10A may be used.
  • an adhesive layer may be disposed on the surface of the lens support portion 26a or the bottom of the concave portion 26b to hold the lens 14.
  • the lens 14 may be transported or transferred to a subsequent process while holding the lens 14 on the die 26. It may be transferred onto a member such as a container.
  • the arrangement of the lenses 14 can be maintained by transferring the lenses 14 to a container provided with an adhesive sheet or a vacuum chuck.
  • a sheet-like resin sheet is used, but a resin sheet continuous in a tape shape may be used.
  • a heat-pressing step or a punching step is performed by sequential feeding. It is also possible to do.
  • This material consists of a block copolymer compound of poly (dimethylsiloxane) and bisphenol A poly (force) and an IPN structure (three-dimensional interpenetrating network) of poly (methyl methacrylate).
  • O is a polymerized compound
  • a plurality of molds can be arranged in the plane direction of the resin material and a plurality of lens portions can be molded at the same time, productivity can be significantly improved as compared with the related art. .
  • a plurality of lens portions can be formed with high accuracy and high yield.
  • the present invention relates to a method and an apparatus for manufacturing a lens, and is particularly suitable for a technique for manufacturing a lens by plastically deforming a resin material.

Landscapes

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

Abstract

A resin sheet (10) is plastic-deformed by being placed on and aligned with a female mold (11) and by being pressed by a male mold (12) from above, with both the female mold (11) and the male mold (12) heated by heaters and a mold release agent applied to molding faces. A plurality sets of female and male molds (11, 12) act on the resin sheet (10), which is then heat-radiated and cooled by being exposed to a cool air after thermal pressing is terminated by stopping heating and releasing the pressure. When the temperature lowers to approach room temperature several minutes after the termination of the thermal pressing, the male mold (12) is lifted for mold releasing, thereby forming lens portions (10a) molded at a plurality of locations on the resin sheet (10).

Description

明 細 レンズの製造方法及び製造装置  Method and apparatus for manufacturing fine lens
技術分野 Technical field
本発明はレンズの製造方法及び製造装置に係り、 特に、 樹脂素材を塑性 変形させることによってレンズを製造する技術に関する。  The present invention relates to a method and an apparatus for manufacturing a lens, and more particularly to a technique for manufacturing a lens by plastically deforming a resin material.
背景技術 Background art
従来から樹脂素材を塑性変形させることによって形成するレンズの製造 方法が使用されている。 この種の製造方法の中には、 熱可塑性の樹脂シー トを加熱された上下型によって挟み込み、 加熱しながら押圧することによ つて樹脂シートを塑性変形させ、 冷却後に離型し、 樹脂シートから成形し たレンズ部を型抜きしてレンズ状に切り離し、 その後、 不要部分の切断や 端部の研磨などを行うようにしたコンタク トレンズの製造方法がある。  Conventionally, a method of manufacturing a lens formed by plastically deforming a resin material has been used. In this type of manufacturing method, a thermoplastic resin sheet is sandwiched between heated upper and lower dies, and the resin sheet is plastically deformed by being pressed while being heated. There is a method of manufacturing a contact lens in which a molded lens portion is cut out and cut into a lens shape, and thereafter, unnecessary portions are cut or edges are polished.
ところが、 上述のように加熱加圧によつて樹脂素材を塑性変形させてレ ンズを型成形する場合、 型成形時に樹脂素材が塑性変形することから、 予 め樹脂シートを成形面積よりやや大きい程度のブランクにカッ トし、 この ブランクを下型上にセッ トして小形のプレス機に装着し、 ここに上型を押 し付けるという手作業によって行われていた。 したがって、 レンズの生産 性が悪く、 レンズ成形後の仕上げ （端面研磨など） の作業効率も低くなる という問題点がある。  However, as described above, when a lens is molded by plastically deforming the resin material by heating and pressing, the resin material is plastically deformed at the time of molding. This was done manually by setting the blank on a lower die, mounting the blank on a small press, and pressing the upper die here. Therefore, there is a problem in that the productivity of the lens is low and the work efficiency of finishing (such as polishing of an end face) after forming the lens is low.
そこで本発明は上記問題点を解決するものであり、 その課題は、 樹脂素 材を塑性変形させてレンズを型成形する製造方法において、 レンズの生産 性の向上を図ることのできる技術を提供することにある。  Therefore, the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a technique capable of improving the productivity of a lens in a manufacturing method of molding a lens by plastically deforming a resin material. It is in.
発明の開示 Disclosure of the invention
上記課題を解決するために本発明が講じた手段は、 ( 1 ) シート状の樹脂素材を所定温度に加熱しながら押圧することによつ て型成形するレンズの製造方法において、 前記樹脂素材の平面方向に複数 の型を配列し、 複数のレンズ部について同時に型成形を行うことを特徴と する。 Means taken by the present invention to solve the above problems are: (1) In a method of manufacturing a lens in which a sheet-shaped resin material is molded while being heated to a predetermined temperature while being pressed, a plurality of molds are arranged in a plane direction of the resin material, and a plurality of lens portions are formed. It is characterized by performing molding at the same time.
この手段によれば、 樹脂素材の平面方向に複数の型を配列して同時に複 数のレンズ部を型成形することができるので、 従来よりも著しく生産性を 向上させることができる。  According to this means, since a plurality of molds can be arranged in the plane direction of the resin material and a plurality of lens portions can be molded at the same time, productivity can be remarkably improved as compared with the related art.
( 2 ) シート状の樹脂素材の平面上に設定した型成形予定領域の周りに抜 き部分を設け、 前記型成形予定領域を加熱しながら押圧することによって レンズ部の型成形を行うことを特徴とするレンズの製造方法である。  (2) It is characterized in that a punched portion is provided around a mold forming scheduled area set on a plane of a sheet-shaped resin material, and the lens section is molded by pressing while heating the mold shaping area. This is a method for manufacturing a lens.
このようにすることにより、 前記型成形予定領域を前記樹脂素材に複数 設定し、 前記樹脂素材の平面方向に複数の型を配列して同時に複数のレン ズ部について型成形を行うことが好ましい。  In this manner, it is preferable that the plurality of mold forming regions are set in the resin material, a plurality of molds are arranged in a plane direction of the resin material, and the molds are simultaneously formed on a plurality of lens portions.
この手段によれば、 型成形予定領域の周りに抜き部分を設け、 型成形を 行うようにしたので、 加圧時において型成形予定領域の周囲への樹脂素材 の押出しや型成形予定領域の内部への樹脂素材の引き込みが容易になされ るので、 レンズ部をより高精度かつ歪み無く、 しかも迅速に成形すること ができるとともに、 複数のレンズ部を形成同時に成形する場合には、 隣接 する型成形予定領域におけるレンズ部の成形による影響を低減することが できる。 ここで、 抜き部分はシート状の樹脂素材を打ち抜き加工すること によって形成できる。 抜き部分 （或いは開口部） は、 型成形予定領域と周 囲部分とをつなげるブリッジ部を介して型成形予定領域の周りに複数設け ることが好ましく、 この場合には平面形状が回転対称になるように抜き部 分を形成することが望ましい。  According to this means, since a punched portion is provided around the area to be molded and the mold is formed, the resin material is extruded around the area to be molded at the time of pressurization and the inside of the area to be molded is pressed. Since the resin material is easily drawn into the lens, the lens part can be molded more accurately, without distortion, and quickly, and when multiple lens parts are formed at the same time, adjacent molds are formed. It is possible to reduce the influence of the molding of the lens portion in the predetermined area. Here, the punched portion can be formed by punching a sheet-shaped resin material. It is preferable that a plurality of punching portions (or openings) be provided around the region to be molded through a bridge portion connecting the region to be molded and the surrounding portion, and in this case, the planar shape becomes rotationally symmetric. It is desirable to form the punched portion as described above.
また、 複数の前記型は個々に独立して前記樹脂素材を押圧するように構 成されていることが好ましい。 複数の型が独立して前記樹脂素材を押圧す るようになっているので、 加圧力のばらつきや当たりの偏りなどを低減す ることができ、 高い歩留まりを得ることができる。 また、 複数の前記型の間に非加圧領域を確保して型成形を行うことが望 ましい。 型の間には非加圧領域が確保された状態で型成形が行われるため 、 型成形される樹脂素材の追従性が良好となり、 周囲の樹脂素材による型 成形への影響も低減できる。 Further, it is preferable that the plurality of molds are configured to individually and independently press the resin material. Since the plurality of molds press the resin material independently, it is possible to reduce the variation in the pressing force and the bias of the hit, and to obtain a high yield. In addition, it is desirable that a non-pressurized region be secured between the plurality of dies to perform the molding. Since the molding is performed while a non-pressurized area is secured between the dies, the followability of the resin material to be molded is improved, and the influence of the surrounding resin material on the molding can be reduced.
上記各手段においては、 前記樹脂素材には、 前記型に対する位置決めを 行うための位置決め部を予め設けることが好ましい。 この位置決め部とし ては孔部ゃ切り欠き部が形成でき、 これらは上記抜き部分とともに打ち抜 き形成することが望ましい。  In each of the above means, it is preferable that a positioning portion for positioning the resin material with respect to the mold is provided in advance. Holes and cutouts can be formed as the positioning portions, and it is desirable that these be punched out together with the above-mentioned cutouts.
また、 上記各手段においては、 前記型成形後の樹脂素材に対して前記型 成形した複数のレンズ部を同時に型抜きする工程を有することが望ましい また、 前記樹脂素材における複数の型成形したレンズ部を同時に型抜き し、 その型抜きした状態のまま平面上に配列し、 そのまま後工程の処理に 移行させることが望ましい。 このようにすると、 後工程における位置決め が容易となり、 自動化や機械化が容易に行えるとともに、 取り扱いが容易 になる。 この場合、 各レンズ部を打ち抜き型の下型上に残すように型設計 し、 打ち抜き後に下型上に複数のレンズを配列させたまま、 或いは、 他の 容器やシート上などにレンズの配列を維持しながら転写することにより後 工程に移行させることが望ましい。  In each of the above-mentioned means, it is preferable that the method further includes a step of simultaneously punching the plurality of molded lens portions with respect to the molded resin material. It is desirable that the molds be simultaneously die-cut, arranged in a plane as they are in the die-cut state, and then transferred to post-processing. In this way, positioning in the post-process becomes easy, automation and mechanization can be easily performed, and handling becomes easy. In this case, the mold is designed so that each lens part is left on the lower die of the punching die. It is desirable to transfer to the subsequent process by transferring while maintaining.
また、 前記型成形時の初期と終期において最大値よりも低い加圧力を前 記樹脂素材に加える過程を有することが好ましい。 型成形時の初期には樹 脂素材の形状が成形時と大きく異なるとともに樹脂素材が充分に加熱され ていないため、 低い加圧力にて徐々に塑性変形させることが好ましく、 ま た、 一旦高い加圧力で充分に型成形させた後には再び低い加圧力にて形状 精度や形状の安定性を確保することが望ましい。  It is preferable that the method further includes a step of applying a pressing force lower than a maximum value to the resin material at the beginning and end of the molding. In the early stage of molding, the shape of the resin material is significantly different from that at the time of molding, and the resin material is not sufficiently heated. Therefore, it is preferable that the plastic material be gradually plastically deformed at a low pressing force. After sufficient molding with pressure, it is desirable to ensure shape accuracy and shape stability again with low pressure.
次に、 シート状の樹脂素材を所定温度に加熱しながら押圧することによ つて型成形するレンズの製造装置において、 前記樹脂素材の表裏両側にそ れそれ平面方向に複数配列させた型を配列してなり、 複数の前記型により 同時に型成形を行うように構成されていることを特徴とする。 Next, in a lens manufacturing apparatus which molds a sheet-shaped resin material by pressing it while heating it to a predetermined temperature, a plurality of dies arranged in a plane direction on both the front and back sides of the resin material are arranged. And a plurality of types It is characterized in that it is configured to perform molding at the same time.
また、 複数の前記型は個々に独立して前記樹脂素材を押圧するように構 成されていることが好ましい。 複数の型を個々に独立させて樹脂素材を押 圧するように構成するには、 例えば、 樹脂素材の両側に配置された型のう ち少なく とも一方側に配列された複数の型を、 相互に独立して成形方向に 移動可能に支持する構造、 相互に独立して成形方向に付勢する構造、 相互 に独立して加圧力を与える構造などがある。  Further, it is preferable that the plurality of molds are configured to individually and independently press the resin material. In order to make a configuration in which a plurality of molds are individually pressed to press the resin material, for example, a plurality of molds arranged on at least one side of the molds arranged on both sides of the resin material are mutually connected. There are a structure that supports independently movable in the molding direction, a structure that urges independently in the molding direction, and a structure that applies pressure independently.
また、 複数の前記型の間に非加圧領域を確保して型成形を行うように構 成されていることが望ましい。 例えば、 複数の型を樹脂素材に対して突出 させた状態に配列させれば、 型の間には非加圧領域が確保される。  In addition, it is preferable that a mold is formed by securing a non-pressurized region between the plurality of molds. For example, if a plurality of molds are arranged so as to protrude from the resin material, a non-pressurized area is secured between the molds.
また、 前記型により前記樹脂素材に加えられる加圧力を経時的に変更制 御可能に構成されていることが望ましい。 加圧力を経時的に変更制御可能 に構成することにより、 レンズ部の形状精度の向上、 形状の安定性、 成形 の再現性の向上やばらつきの低減などを図ることができる。  Further, it is desirable that the pressing force applied to the resin material by the mold can be changed and controlled over time. By configuring the pressing force to be able to be changed and controlled with time, it is possible to improve the accuracy of the shape of the lens portion, improve the stability of the shape, improve the reproducibility of molding, and reduce variations.
さらに、 所定温度に加熱しながら押圧することによって型成形された複 数のレンズ部を備えたシ一ト状の樹脂素材に対して打ち抜きにより前記レ ンズ部を分離するレンズの製造装置において、 打ち抜き後に前記レンズ部 をそのままの平面位置に保持するように構成されていることを特徴とする 。 型成形された複数のレンズ部を打ち抜き後にそのままの平面位置を保持 するょゔにしているので、 そのまま後工程に移行させることにより、 後ェ 程の自動化、 機械化が容易になり、 位置決め作業も不要になるため、 取り 扱いが容易になる。 このような構造としては、 打ち抜き時の下型に打ち抜 きにより分離されたレンズ部がそのまま残るように型が設計されている場 合がある。 この場合、 下型上にレンズ部がそのまま載置されているだけで もよく、 また、 下型に対してレンズ部が粘着層などの存在により固着され ていてもよい。 図面の簡単な説明 図 1は、 本発明に係るレンズの製造方法の実施形態の概要を示す工程説 明図 （a ) 〜 （d ) である。 Further, in a lens manufacturing apparatus for separating a lens portion by punching out a sheet-shaped resin material having a plurality of lens portions formed by pressing while heating to a predetermined temperature, It is characterized in that the lens unit is configured to be held in the same planar position later. After punching out a plurality of molded lens parts, the plane position is kept as it is, so by moving to the post-process as it is, automation and mechanization of the post-processing become easy, and positioning work is unnecessary And handling becomes easier. As such a structure, there are cases where the mold is designed so that the lens portion separated by punching remains in the lower mold at the time of punching. In this case, the lens section may be simply placed on the lower mold as it is, or the lens section may be fixed to the lower mold by the presence of an adhesive layer or the like. BRIEF DESCRIPTION OF THE FIGURES FIG. 1 is a process explanatory view (a) to (d) showing an outline of an embodiment of a lens manufacturing method according to the present invention.
図 2は、 上記実施形態に用いる加圧装置の構造を示す概略断面図である  FIG. 2 is a schematic sectional view showing the structure of the pressurizing device used in the above embodiment.
図 3は、 熱加圧工程前の樹脂シートの平面形状を示す平面図である。 図 4は、 熱加圧工程の加圧力の経時変化の例を示すグラフである。 FIG. 3 is a plan view showing a planar shape of the resin sheet before the heat pressing step. FIG. 4 is a graph showing an example of a change with time of the pressing force in the heat pressing step.
図 5は、 レンズの打ち抜き工程の前後の状態を示す模式的な断面図であ る。 符号の説明  FIG. 5 is a schematic sectional view showing a state before and after a lens punching step. Explanation of reference numerals
1 0 樹脂シート  1 0 Resin sheet
1 0 a レンズ部 （型成形予定領域）  10 a Lens part (area to be molded)
1 0 b 非成形部  1 0 b Non-formed part
1 0 c ブリッジ部  1 0 c Bridge section
1 0 A 位置決め孔  1 0 A Positioning hole
1 0 B 抜き部  1 0 B punch
1 1 下型  1 1 Lower mold
1 2 上型  1 2 Upper type
1 4 レンズ  1 4 lens
1 5 , 2 5 パンチ  1 5, 2 5 Punch
1 6， 2 6 ダイ  16 and 26 dies
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
次に、 添付図面を参照して本発明に係る実施形態について説明する。 図 Next, an embodiment according to the present invention will be described with reference to the accompanying drawings. Figure
1は本実施形態のレンズの製造方法の概略工程を示す工程説明図である。 レンズ素材は熱可塑性樹脂などのモノマ一を調合して図 1 ( a ) に示す樹 脂シ一ト 1 0に成形される。 本実施形態のレンズ素材はポリメ夕クリル酸 ヒ ドロキシェチルなどのメタクリレート或いはァクリレートなどの樹脂を 主成分とするものがある。 樹脂シート 1 0は金属などからなる雌形の下型 1 1の上に位置決めされた状態で載置され、 金属などからなる雄形の上型 1 2を上方から押し付けることにより図 1 ( b ) に示すように塑性変形さ れる。 このとき、 上型 1 1及び下型 1 2はともにヒ一夕などによって加熱 されており、 成形面には離型剤が塗布されている。 また、 樹脂シート 1 0 には複数組の上型 1 1及び下型 1 2の組が作用するようになっている。 プレス条件はレンズ素材や成形後のレンズ品質 （例えばレンズ中心厚な ど） により適宜に設定されるが、 例えば、 温度は 1 5 0 °C程度、 圧力は 2 k g / c m 程度で数分間、 熱加圧する。 熱加圧を終了し、 加熱を停止する とともに圧力を解除し、 そのまま冷気を当てることなどにより放熱させて 冷却する。 熱加圧終了後からさらに数分間経過すると温度は常温近くまで 降下するので、 図 1 ( c ) に示すように上型 1 2を引き上げて離型する。 このようにすると、 樹脂シート 1 0の複数箇所に型成形されたレンズ部 1 0 aが形成される。 最後に、 図 1 ( d ) に示すように、 成形後の樹脂シー ト 1 0のレンズ部 1 0 aをプレス機のパンチ 1 5及びダイ 1 6によって打 ち抜き、 レンズ 1 4を分離する。 1 is a process explanatory view showing a schematic process of a method for manufacturing a lens of the present embodiment. The lens material is prepared by mixing a monomer such as a thermoplastic resin into a resin sheet 10 shown in FIG. 1 (a). As the lens material of the present embodiment, there is a material mainly composed of a resin such as methacrylate or acrylate such as hydroxystyrene methacrylate. Resin sheet 10 is a female lower mold made of metal etc. It is placed in a state where it is positioned on 11 and is pressed by a male upper mold 12 made of metal or the like from above to be plastically deformed as shown in Fig. 1 (b). At this time, both the upper mold 11 and the lower mold 12 are heated by heat and the like, and the mold release agent is applied to the molding surface. Further, a plurality of sets of the upper mold 11 and the lower mold 12 act on the resin sheet 10. Pressing conditions are appropriately set according to the lens material and the quality of the lens after molding (for example, the thickness of the center of the lens). Apply pressure. Terminate heat pressurization, stop heating, release pressure, and radiate heat by applying cold air to cool. After a few minutes from the end of the thermal pressurization, the temperature drops to near normal temperature, so pull up the upper mold 12 and release it as shown in Fig. 1 (c). In this manner, lens portions 10a are formed at a plurality of positions of the resin sheet 10 by molding. Finally, as shown in FIG. 1 (d), the lens portion 10 a of the molded resin sheet 10 is punched out by a punch 15 and a die 16 of a press machine to separate the lens 14.
本実施形態では、 樹脂シート 1 0を加熱しながら加圧することによって 樹脂シ一ト 1 0の一部を塑性変形させ、 レンズ面を備えた複数のレンズ部 1 0 aを成形する。 このとき、 複数のレンズ部 1 0 aは同時に熱加圧によ つて成形されるが、 樹脂シートの変形や素材の移動による成形部の影響を 低減するために、 特に複数のレンズ部を同時に成形することによる影響を 低減するために、 レンズ部 1 0 aの成形部の周囲を図 1 ( b ) に示すよう に解放し、 非加圧領域を確保した状態で成形することが好ましい。  In the present embodiment, a part of the resin sheet 10 is plastically deformed by heating and pressing the resin sheet 10 to form a plurality of lens portions 10a having lens surfaces. At this time, the plurality of lens portions 10a are simultaneously formed by hot pressing, but in order to reduce the influence of the forming portion due to the deformation of the resin sheet and the movement of the material, particularly the plurality of lens portions are simultaneously formed. In order to reduce the influence of this, it is preferable to release the periphery of the molding portion of the lens portion 10a as shown in FIG. 1 (b) and perform molding while securing the non-pressurized area.
また、 上型 1 1及び下型 1 2の各組は互いに独立して樹脂シート 1 0の 一部に作用するように、 それそれの型の支持系、 加圧系が独立して設けら れていることが好ましい。 複数のレンズ部 1 0 aを複数の成形部が一体に 構成された大きな一体型によって一度に成形すると、 一体型の加工精度、 樹脂シ一卜の厚さのばらつき、 樹脂シート 1 0に対する当接状態の相違な どによって成形部毎に加圧条件、 加熱条件などにばらつきが発生し、 均質 なレンズ部 1 0 aを形成することが困難になるからである。 Each set of the upper mold 11 and the lower mold 12 is provided with a supporting system and a pressurizing system for each mold independently so as to act on a part of the resin sheet 10 independently of each other. Is preferred. When a plurality of lens sections 10a are molded at once by a large integrated mold in which a plurality of molded sections are integrally formed, the processing accuracy of the integrated mold, variation in thickness of the resin sheet, and contact with the resin sheet 10 Pressing conditions, heating conditions, etc. vary for each molding part due to differences in conditions, etc. This is because it becomes difficult to form a perfect lens portion 10a.
このようにして成形された各レンズ 1 4には、 その後、 内面部の機械的 研磨加工、 周縁部の機械的研磨加工、 ポリツシングなどが順次施され、 品 質検査、 洗浄、 プラズマ表面処理などが行われて製品として完成される。 図 2は本実施形態の熱加圧工程において用いられるために好適な加圧装 置の模式的な概略構成図である。 図示しない基台に固定された基板 1 0 1 に対して、 樹脂シ一ト 1 0を支持するシ一ト支持系 1 1 0と、 下型 1 1を 搭載し、 支持する下型支持系 1 2 0とが取付固定されており、 また、 基板 1 0 1に対して所定の圧力にて上方から加圧される加圧板 1 0 2に対して 、 上型 1 2を搭載し、 支持する上型支持系 1 3 0が取付固定されている。 シート支持系 1 1 0には、 樹脂シート 1 0を取付けるための取付枠 1 1 1が設けられている。 取付枠 1 1 1はほぼ垂直に立設された複数 （例えば 4本） のガイ ド軸 1 1 2に対して昇降可能に取り付けられている。 ガイ ド 軸 1 1 2は基板 1 0 1に固定された支持枠 1 1 3に挿入固定され、 ガイ ド 軸 1 1 2の周りにコイルスプリングなどの弾性部材 1 1 4が装填され、 取 付枠 1 1 1を樹脂シート 1 0とともに上方に付勢している。  Each lens 14 molded in this way is then subjected to mechanical polishing of the inner surface, mechanical polishing of the peripheral edge, polishing, etc., in that order, for quality inspection, cleaning, plasma surface treatment, etc. Performed and completed as a product. FIG. 2 is a schematic schematic configuration diagram of a pressurizing device suitable for use in the heat pressurizing step of the present embodiment. For a substrate 101 fixed to a base (not shown), a sheet support system 110 for supporting the resin sheet 10 and a lower die support system 1 for mounting and supporting the lower die 11 The upper die 12 is mounted and supported on a pressing plate 102 that is pressed from above with a predetermined pressure on the substrate 101. The mold support system 130 is mounted and fixed. The sheet support system 110 is provided with a mounting frame 111 for mounting the resin sheet 10. The mounting frame 1 1 1 is attached to a plurality of (eg, 4) guide shafts 1 1 2 which are set up almost vertically so as to be able to move up and down. The guide shaft 1 1 2 is inserted and fixed in a support frame 1 1 3 fixed to the substrate 101, and an elastic member 1 1 4 such as a coil spring is loaded around the guide shaft 1 12 and the mounting frame. 11 is urged upward together with the resin sheet 10.
基板 1 0 1の表面上には位置決め板 1 2 4が支持枠 1 1 3により固定さ れ、 この位置決め板 1 2 4に対して下型 1 1 と、 下型 1 1に接続された取 付部材 1 2 1 とが嵌合している。 取付部材 1 2 1はシャフ ト 1 2 2に接続 され、 ャフ ト 1 2 2は基板 1 0 1を揷通して基板 1 0 1の背後に取り付 けられたブラケッ ト 1 2 5に軸支されている。 ブラケッ 卜の内部において シャフ ト 1 2 2にはフランジ部 1 2 3が設けられ、 このフランジ部 1 2 3 とブラケヅ ト 1 2 5の内面との間にコイルスプリングなどの弾性部材 1 2 6が弾装されている。 基板 1 0 1には加熱ヒー夕 1 2 8が内蔵されている o  A positioning plate 1 2 4 is fixed on the surface of the substrate 101 by a support frame 1 1 3, and the lower die 11 and the lower die 11 are connected to the positioning plate 1 24. The member 1 2 1 is fitted. The mounting member 1 2 1 is connected to the shaft 1 2 2, and the shaft 1 2 2 passes through the board 101 and is supported by the bracket 1 25 mounted on the back of the board 101. Have been. Inside the bracket, the shaft 122 has a flange 123, and an elastic member 126, such as a coil spring, is elastically provided between the flange 123 and the inner surface of the bracket 125. Is equipped. The substrate 101 has a built-in heating heater 128
加圧板 1 0 2は公知の油圧機構などによって基板 1 0 1に対して制御さ れた圧力値を以て加圧できるように構成されている。 上型 1 2は取付部材 1 3 1に接続され、 上型 1 2及び取付部材 1 3 1は位置決め板 1 3 2に係 合している。 位置決め板 1 3 2は支持枠 1 3 3により基板 1 3 4に固定さ れており、 基板 1 3 4は取付部材 1 3 5により加圧板 1 0 2に取り付けら れている。 基板 1 3 4には加熱ヒー夕 1 3 8が内蔵されている。 The pressure plate 102 is configured to be able to press the substrate 101 with a pressure value controlled by a known hydraulic mechanism or the like. The upper die 12 is connected to the mounting member 13 1, and the upper die 12 and the mounting member 13 1 are connected to the positioning plate 13 2. I agree. The positioning plate 13 2 is fixed to the substrate 13 4 by the support frame 13 3, and the substrate 13 4 is attached to the pressing plate 102 by the attachment member 135. The substrate 13 4 has a built-in heating heater 1 38.
熱加圧工程において上述の条件を満たすために、 複数の下型 1 1はそれ それ独立して樹脂シート 1 0の所定部位を加圧するように構成されている 。 各下型 1 1 と上型 1 2とによって挟圧される樹脂シートのレンズ部は、 加圧板 1 0 2の加圧力に釣り合う弾性部材 1 2 6の弾性力によってそれそ れ加圧される。 弾性部材 1 2 6の弾性力のばらつきが、 下型 1 1の上下位 置のばらつきの範囲内で殆ど無視できる程度であれば、 各レンズ部はほぼ 均等に加圧される。 したがって、 弾性部材 1 2 6の弹性力の変化特性を下 型 1 1の考えられる上下ばらつきに対して適宜に設定することが好ましい 。 なお、 本実施形態では弹性部材 1 2 6の伸縮ス トロークを弾性部材 1 2 6の長さに較べてきわめて小さく し、 弾性力の変化幅を小さく しているが 、 逆に、 弾性部材 1 2 6の伸縮ス トロークを大きく とり、 弾性力に対して バランスする加圧力の変化可能範囲を大きくすることも可能である。  In order to satisfy the above conditions in the heat pressing step, the plurality of lower dies 11 are each configured to independently press a predetermined portion of the resin sheet 10. The lens portion of the resin sheet sandwiched between the lower mold 11 and the upper mold 12 is pressed by the elastic force of the elastic member 126 that balances the pressing force of the pressing plate 102. If the variation in the elastic force of the elastic members 126 is negligible within the range of the variation between the upper and lower parts of the lower mold 11, each lens unit is pressed almost uniformly. Therefore, it is preferable to appropriately set the change characteristic of the elastic force of the elastic member 126 with respect to the possible vertical variation of the lower mold 11. In the present embodiment, the stretchable stroke of the elastic member 126 is made extremely small as compared with the length of the elastic member 126, and the width of change of the elastic force is made small. It is also possible to increase the extendable stroke of the pressure applied to balance the elastic force by increasing the stretch stroke of 6.
また、 上述の条件を満たすために、 本装置において樹脂シート 1 0に対 してそれそれ突出する各下型 1 1間及び各上型 1 2間は単なる間隙となつ ている。 従って、 加圧時に各型間の樹脂シート 1 0の部分には加圧力が加 わっておらず、 自由になつているため、 加圧による各レンズ部の周縁部へ のしわ寄せなどを吸収することができる。 その結果、 レンズ部の成形はよ り高精度になされる。 さらに、 樹脂シ一ト 1 0は取付枠 1 1 1によって上 下に移動可能に支持されており、 加圧時に樹脂シート 1 0に不要な応力や 歪みが加わらないように構成されているため、 レンズ部の成形状態をさら に理想的に保つことができる。  Further, in order to satisfy the above-mentioned conditions, in the present apparatus, the gaps between the lower molds 11 and the upper molds 12 protruding from the resin sheet 10 are simply gaps. Therefore, the pressing force is not applied to the portion of the resin sheet 10 between the dies at the time of pressurization, and the pressurized portion is free. Can be. As a result, the molding of the lens portion is performed with higher precision. Further, the resin sheet 10 is supported so as to be able to move up and down by a mounting frame 111, and is configured so that unnecessary stress and distortion are not applied to the resin sheet 10 when pressurized. The molding state of the lens part can be kept more ideal.
加圧力の均一性や精度を向上させるには、 図中点線で示すように、 ブラ ケッ ト 1 2 5に流路 1 2 5 a及び 1 2 5 bを設けて油圧や空気圧、 その他 の流体圧を下型 1 1に加えることができるようにすればよい。 これらの流 体圧は図示しない制御装置によって正確に制御され、 流路 1 2 5 aから供 W To improve the uniformity and accuracy of the applied pressure, as shown by the dotted lines in the figure, brackets 125 are provided with flow paths 125a and 125b to provide hydraulic, pneumatic, and other fluid pressures. Can be added to the lower mold 1 1. These fluid pressures are precisely controlled by a controller (not shown), and supplied from the flow path 125a. W
9  9
給される流体圧と流路 1 2 5 bから供給される流体圧との差によって下型 1 1及び上型 1 2によって樹脂シートに加えられる加圧力が正確に決定さ れる。 これらの流路はいずれか一方のみでもよい。  The pressure applied to the resin sheet by the lower mold 11 and the upper mold 12 is accurately determined by the difference between the supplied fluid pressure and the fluid pressure supplied from the flow path 125b. Only one of these channels may be used.
図 3は、 成形前の樹脂シ一ト 1 0の平面形状を示すものである。 樹脂シ —ト 1 0には予めシ一ト全体を位置決めするための位置決め孔 1 0 Aを複 数箇所形成し、 これらの位置決め孔 1 0 Aを図 2に示す取付枠 1 1 1に対 する位置決めビン （図示せず） に挿通させたり、 取付枠 1 1 1に取り付け るネジに挿通させたり して固定する。 また、 樹脂シート 1 0 Aには成形さ れる型成形予定領域に相当する各レンズ部 1 0 aと、 その周りの非成形部 1 0 bとの間に抜き部 1 0 Bを形成しておくことが好ましい。 この抜き部 1 0 Bはレンズ部 1 0 aの周りを取り巻く部分に所定割合にて設けられる 。 抜き部 1 0 Bを形成すると、 レンズ部 1 0 aが成形されるときに、 下型 1 1 と上型 1 2によってシ一ト地が内側に引き寄せられたり、 外側にはみ 出したりすることが抵抗なく行われるようになるので、 レンズ部 1 0 aの 成形精度を高めることができ、 成形後のレンズ部 1 0 aのしわや引きつり その他の歪みの発生を低減することができる。 特に、 複数のレンズ部を同 時に型成形するため、 隣接するレンズ部による影響を低減することができ 、 顕著な効果が得られる。  FIG. 3 shows a planar shape of the resin sheet 10 before molding. A plurality of positioning holes 10A for positioning the entire sheet are formed in the resin sheet 10 in advance, and these positioning holes 10A correspond to the mounting frame 111 shown in FIG. Fix it by inserting it into the positioning bin (not shown) or by inserting the screw into the mounting frame. In the resin sheet 10A, a punched portion 10B is formed between each lens portion 10a corresponding to a region to be molded and a non-molded portion 10b around the lens portion 10a. Is preferred. The cutout portion 10B is provided at a predetermined ratio in a portion surrounding the lens portion 10a. When the punched portion 10B is formed, when the lens portion 10a is formed, the sheet material is drawn inward by the lower die 11 and the upper die 12 or protrudes outward. Since the molding is performed without resistance, the molding accuracy of the lens portion 10a can be increased, and the occurrence of wrinkles, pulling and other distortions of the molded lens portion 10a can be reduced. In particular, since a plurality of lens portions are molded at the same time, the influence of adjacent lens portions can be reduced, and a remarkable effect can be obtained.
抜き部 1 0 Bの形状は任意であり、 レンズ部 1 0 aの周囲を或る程度大 きく開口させるものであればよい。 ただし、 レンズ部 1 0 aを成形前に樹 脂シート 1 0から脱落させないように、 少なく とも一箇所において周囲と 繋がったプリ ッジ部 1 0 cを設ける必要がある。 抜き部 1 0 Bはレンズ部 1 0 aの周囲に複数形成することが好ましく、 この場合は、 レンズ部 1 0 aの周囲において均等に （回転対称に） 形成されることが好ましい。 この 実施形態では、 抜き部 1 0 Bをレンズ部 1 0 aの周囲に 4つ回転対称に配 置し、 各抜き部 1 0 Bの間を 4つのプリヅジ部 1 0 cとしている。  The shape of the punched portion 10B is arbitrary, and may be any shape as long as the periphery of the lens portion 10a is opened to a certain extent. However, in order to prevent the lens portion 10a from falling off from the resin sheet 10 before molding, it is necessary to provide at least one portion of a bridge portion 10c connected to the surroundings. It is preferable that a plurality of cutout portions 10B are formed around the lens portion 10a. In this case, it is preferable that the cutout portions 10B are formed uniformly (rotationally symmetrically) around the lens portion 10a. In this embodiment, four cutout portions 10B are arranged around the lens portion 10a in a rotationally symmetrical manner, and the space between the cutout portions 10B is made up of four prism portions 10c.
本実施形態では、 図 2に示す装置構造において、 加圧板 1 0 2の加圧力 を制御するか、 或いは、 加圧板 1 0 2を固定して流路 1 2 5 a , 1 2 5 b から付与される流体圧を制御することによって、 熱加圧工程中において加 圧力を時間的に変化させることが好ましい。 図 4はこのように加圧力を経 時的に変化させる場合の加圧力の変化パターンの一例を示すものである。 この例においては、 熱加圧初期には加圧力を徐々に増大させていき、 やが て加圧力を最大値の加圧値 P Mに保持して充分に塑性変形させ、 その後、 加 圧力を低減させて所定の低い加圧値 P () にして長時間保持する。このように することによって、 過程 Aにおいて徐々に加圧力を上げていくことにより 樹脂シート 1 0のしわや引きつりなどを低減させて無理なく変形させてい くことができ、過程 Bにおいて高い加圧値 P Mで所望の形状に確実に塑性変 形させ、過程 Cにおいて低い加圧値 P。でゆつく りと変形歪みを除去するこ とができる。 上記過程 A， B , Cにおける加圧変化速度、 加圧値、 時間は それそれ最適なレンズの形状精度、 形状の再現性やばらつき、 品位などが 得られるように適宜に設定される。 なお、 過程 Cは加熱を継続してもよく 、 或いは、 途中で加熱を停止し、 冷却過程を開始してもよい。 In this embodiment, in the apparatus structure shown in FIG. 2, the pressing force of the pressure plate 102 is controlled, or the pressure plate 102 is fixed and the flow paths 125 a, 125 b It is preferable that the pressure is changed with time during the thermal pressurization step by controlling the fluid pressure applied from the pressure. FIG. 4 shows an example of a change pattern of the pressing force when the pressing force is changed over time as described above. In this example, the pressing force is gradually increased in the initial stage of the thermal pressing, and the pressing force is eventually maintained at the maximum pressing value P M and sufficiently plastically deformed. Reduce to a predetermined low pressure value P () and hold for a long time. In this way, by gradually increasing the pressing force in the process A, it is possible to reduce wrinkles and pulling of the resin sheet 10 and to deform the resin sheet 10 without difficulty. The value P M ensures plastic deformation to the desired shape, and a low pressure value P in process C. With this, deformation distortion can be removed slowly. The pressure change speed, pressure value, and time in the above processes A, B, and C are appropriately set so as to obtain optimal lens shape accuracy, shape reproducibility and variation, and quality. In the process C, the heating may be continued, or the heating may be stopped halfway and the cooling process may be started.
本実施形態では、 上記熱加圧工程の終了後に降温してから離型し、 各レ ンズ部 1 0 aが成形された樹脂シート 1 0を図 1 ( d ) に示すプレス抜き 工程において分離する。 この場合、 図 1 ( d ) に示すようにレンズ 1 4を ばらばらに抜いてもよいが、 その後の洗浄、 研磨、 プラズマ処理工程など を考慮すると、 樹脂シ一ト 1 0の各レンズ部 1 0 aの配列のままに、 分離 された各レンズ 1 4を配列させて次工程へと送ることが望ましい。 図 5は このようなレンズ 1 4をレンズ部 1 0 aの配列状態に保持するためのプレ ス抜き工程の様子を示すものである。  In the present embodiment, the temperature is lowered after the completion of the hot pressing step, the mold is released, and the resin sheet 10 on which each lens portion 10a is formed is separated in the press punching step shown in FIG. 1 (d). . In this case, the lens 14 may be pulled out as shown in FIG. 1 (d), but taking into account the subsequent cleaning, polishing, plasma treatment steps, etc., each lens part 10 of the resin sheet 10 is taken into account. It is desirable to arrange the separated lenses 14 in the same arrangement as in a and send them to the next step. FIG. 5 shows a state of a press punching step for maintaining such a lens 14 in the arrangement state of the lens portions 10a.
図 5 ( a ) は熱加圧工程後の樹脂シ一ト 1 ◦をプレスのダイ 2 6上に載 置した状態を示し、 図 5 ( b ) は樹脂シート 1 0に対して抜き工程を完了 した後の状態を示すものである。 成形済みのレンズ部 1 0 aを備えた樹脂 シート 1 0は、 各レンズ部 1 0 aの湾曲部分がダイ 2 6のレンズ支持部 2 6 aの内側に形成された凹部 2 6 bに嵌合するようにして載置される。 レ ンズ支持部 2 6 aの周囲は図 3に示す非成形部 1 0 bに対応する形状の凹 溝 26 cとなっており、 この凹溝 26 cに対応する形状のパンチ 25が用 意されている。 Fig. 5 (a) shows a state in which the resin sheet 1 ◦ after the hot pressing process is placed on the press die 26, and Fig. 5 (b) shows the completion of the punching process for the resin sheet 10 FIG. In the resin sheet 10 having the molded lens portion 10a, the curved portion of each lens portion 10a fits into the concave portion 26b formed inside the lens support portion 26a of the die 26. It is placed in such a way that The periphery of the lens support part 26a has a concave shape corresponding to the non-formed part 10b shown in FIG. A groove 26c is provided, and a punch 25 having a shape corresponding to the groove 26c is provided.
次に、 パンチ 25を降下させてダイ 26上の樹脂シ一ト 10にプレス抜 き加工を施し、 図 5 (b) に示すように各レンズ 14を分離する。 このよ うにすると、 各レンズ 14をそのままダイ 26上に載置若しくは接着させ たまま工程を終了させることができる。 したがって、 ダイ 26上に各レン ズ 14を加工配置そのままの状態で次工程へと送り、 種々の処理を行うこ とができるため、 自動化や機械化が容易になる。  Next, the punch 25 is lowered to press the resin sheet 10 on the die 26 to separate the lenses 14 as shown in FIG. 5 (b). In this manner, the process can be completed while each lens 14 is placed on or adhered to the die 26 as it is. Therefore, since each lens 14 can be sent to the next process in the same state as the processing arrangement on the die 26 and various processes can be performed, automation and mechanization are facilitated.
上記例においては、 ダイ 26の上の凹部 26 bにレンズ部 10 aの湾曲 部を嵌合させるようにしているが、 位置決め孔 1 0 Aを用いるなどの別の 位置決め手段を用いてもよい。 また、 レンズ支持部 26 aの表面や凹部 2 6 bの底部に粘着層を配置してレンズ 14を保持するようにしてもよい。 また、 打ち抜き後、 ダイ 26上にレンズ 14を保持したまま後工程へと搬 送したり移行させたり してもよく、 さらに、 ダイ 26上のレンズ 14を配 列を崩さないようにして他の容器等の部材上に転写してもよい。 例えば、 粘着シートや真空チャックを備えた容器にレンズ 14を転写することによ つてレンズ 14の配列を維持することができる。  In the above example, the curved portion of the lens portion 10a is fitted into the concave portion 26b on the die 26, but another positioning means such as using the positioning hole 10A may be used. Further, an adhesive layer may be disposed on the surface of the lens support portion 26a or the bottom of the concave portion 26b to hold the lens 14. After the punching, the lens 14 may be transported or transferred to a subsequent process while holding the lens 14 on the die 26. It may be transferred onto a member such as a container. For example, the arrangement of the lenses 14 can be maintained by transferring the lenses 14 to a container provided with an adhesive sheet or a vacuum chuck.
なお、 上記実施形態では、 枚様の樹脂シートを用いているが、 テープ状 に連続する樹脂シートを用いてもよく、 この場合には、 順次送り加工によ り熱加圧工程や打ち抜き工程を行うことも可能である。  In the above-described embodiment, a sheet-like resin sheet is used, but a resin sheet continuous in a tape shape may be used. In this case, a heat-pressing step or a punching step is performed by sequential feeding. It is also possible to do.
なお、 前述の実施の形態においては、 樹脂の材料として、  In the above-described embodiment, as the resin material,
[ポリ （ジメチルシロキサン） 一 b—ポリ （カーボネート） ] — i—ポリ (メタクリル酸メチル） を用いることができる。 この材料は次のように略 記することができる。  [Poly (dimethylsiloxane) -b-poly (carbonate)]-i-poly (methyl methacrylate) can be used. This material can be abbreviated as follows:
[PDMS-b-PC] - i-PMMA  [PDMS-b-PC]-i-PMMA
式中、 PDMSはポリ （ジメチルシロキサン） ； PCはビスフエノール A ポリ （カーボネート） ； P MM Aはポリ （メタクリル酸メチル） を意味す る。 この材料は、 ポリ （ジメチルシロキサン） とビスフエノール Aポリ （力 一ボネ一ト） のブロック共重合体化合物とポリ （メタクリル酸メチル） と の I P N構造 （ 3次元相互浸入網目構造） を形成した共重合化合物である o In the formula, PDMS means poly (dimethylsiloxane); PC means bisphenol A poly (carbonate); PMM A means poly (methyl methacrylate). This material consists of a block copolymer compound of poly (dimethylsiloxane) and bisphenol A poly (force) and an IPN structure (three-dimensional interpenetrating network) of poly (methyl methacrylate). O is a polymerized compound
以上説明したように本発明によれば、 樹脂素材の平面方向に複数の型を 配列して同時に複数のレンズ部を型成形することができるので、 従来より も著しく生産性を向上させることができる。 特に、 複数のレンズ部を高精 度で、 歩留まり良く成形することができる。  As described above, according to the present invention, since a plurality of molds can be arranged in the plane direction of the resin material and a plurality of lens portions can be molded at the same time, productivity can be significantly improved as compared with the related art. . In particular, a plurality of lens portions can be formed with high accuracy and high yield.
産業上の利用可能性 Industrial applicability
本発明はレンズの製造方法及び製造装置に係り、 特に、 樹脂素材を塑性 変形させることによってレンズを製造する技術に適している。  The present invention relates to a method and an apparatus for manufacturing a lens, and is particularly suitable for a technique for manufacturing a lens by plastically deforming a resin material.

Claims

請求の範囲 The scope of the claims
1 , シート状の樹脂素材を所定温度に加熱しながら押圧することによつ て型成形するレンズの製造方法において、 1.In a method of manufacturing a lens, which is molded by pressing a sheet-shaped resin material while heating it to a predetermined temperature,
前記樹脂素材の平面方向に複数の型を配列し、 複数のレンズ部について 同時に型成形を行うことを特徴とするレンズの製造方法。  A method of manufacturing a lens, comprising: arranging a plurality of molds in a plane direction of the resin material, and simultaneously performing mold molding on a plurality of lens portions.
2 . シート状の樹脂素材の平面上に設定した型成形予定領域の周りに抜 き部分を設け、 前記型成形予定領域を加熱しながら押圧することによって レンズ部の型成形を行うことを特徴とするレンズの製造方法。  2. It is characterized in that a punching portion is provided around a region to be molded which is set on a plane of a sheet-shaped resin material, and the lens portion is molded by pressing while heating the region to be molded. Manufacturing method of lens.
3 . 請求の範囲第 2項において、 前記型成形予定領域を前記樹脂素材に 複数設定し、 前記樹脂素材の平面方向に複数の型を配列して同時に複数の レンズ部について型成形を行うことを特徴とするレンズの製造方法。 3. The method according to claim 2, wherein a plurality of the mold forming regions are set in the resin material, a plurality of dies are arranged in a plane direction of the resin material, and a plurality of lens portions are simultaneously molded. A method of manufacturing a lens.
4 . 請求の範囲第 1項又は請求の範囲第 3項において、 複数の前記型は 個々に独立して前記樹脂素材を押圧するように構成されていることを特徴 とするレンズの製造方法。  4. The method for manufacturing a lens according to claim 1, wherein the plurality of molds are configured to individually and independently press the resin material.
5 . 請求の範囲第 1項、 請求の範囲第 3項又は請求の範囲第 4項におい て、 複数の前記型の間に非加圧領域を確保して型成形を行うことを特徴と するレンズの製造方法。  5. The lens according to claim 1, claim 3, or claim 4, wherein a non-pressurized area is secured between the plurality of molds to perform mold molding. Manufacturing method.
6 . 請求の範囲第 1項、 請求の範囲第 3項から請求の範囲第 5項までの いずれか 1項において、 前記樹脂素材における複数の型成形したレンズ部 を同時に型抜きし、 その型抜きした状態のまま平面上に配列し、 そのまま 後工程の処理に移行させることを特徴とするレンズの製造方法。  6. The method according to any one of claims 1, 3 to 5, wherein a plurality of molded lens portions of the resin material are simultaneously die-cut, and the die-cutting is performed. A method of manufacturing a lens, wherein the lens is arranged on a flat surface as it is, and the process is directly transferred to a subsequent process.
7 . 請求の範囲第 1項から請求の範囲第 6項までのいずれか 1項におい て、 前記型成形時の初期と終期において最大値よりも低い加圧力を前記樹 脂素材に加える過程を有することを特徴とするレンズの製造方法。  7. The method according to any one of claims 1 to 6, further comprising a step of applying a pressure lower than a maximum value to the resin material at an initial stage and a final stage during the molding. A method for manufacturing a lens, comprising:
8 . シ一ト状の樹脂素材を所定温度に加熱しながら押圧することによつ て型成形するレンズの製造装置において、 前記樹脂素材の表裏両側にそれ それ平面方向に複数配列させた型を配列してなり、 複数の前記型により同 時に型成形を行うように構成されていることを特徴とするレンズの製造装 8. In a lens manufacturing apparatus for molding by pressing a sheet-shaped resin material while heating it to a predetermined temperature, a plurality of dies are arranged in a plane direction on both sides of the resin material. Are arrayed, and the same A lens manufacturing apparatus characterized in that the lens
9 . 請求の範囲第 8項において、 複数の前記型は個々に独立して前記樹 脂素材を押圧するように構成されていることを特徴とするレンズの製造装 l^o 9. The lens manufacturing apparatus according to claim 8, wherein the plurality of molds are configured to individually and independently press the resin material.
1 0 . 請求の範囲第 8項又は請求の範囲第 9項において、 複数の前記型 の間に非加圧領域を確保して型成形を行うように構成されていることを特 徴とするレンズの製造装置。  10. The lens according to claim 8 or claim 9, wherein a mold is formed by securing a non-pressurized area between the plurality of molds. Manufacturing equipment.
1 1 . 請求の範囲第 8項から請求の範囲第 1 0項までのいずれか 1項に おいて、 前記型により前記樹脂素材に加えられる加圧力を経時的に変更制 御可能に構成されていることを特徴とするレンズの製造装置。  11. The method according to any one of claims 8 to 10, wherein the pressing force applied to the resin material by the mold is changeable with time. An apparatus for manufacturing a lens.
1 2 . 所定温度に加熱しながら押圧することによって型成形された複数 のレンズ部を備えたシート状の樹脂素材に対して打ち抜きにより前記レン ズ部を分離するレンズの製造装置において、 打ち抜き後に前記レンズ部を そのままの平面位置に保持するように構成されていることを特徴とするレ ンズの製造装置。  12. A lens manufacturing apparatus that separates the lens portion by punching out a sheet-shaped resin material having a plurality of lens portions formed by pressing while heating to a predetermined temperature. An apparatus for manufacturing a lens, wherein the lens unit is configured to hold the lens unit in a planar position as it is.
PCT/JP1999/004665 1998-08-28 1999-08-27 Method and device for producing lens WO2000012291A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24383598 1998-08-28
JP10/243835 1998-08-28

Publications (1)

Publication Number Publication Date
WO2000012291A1 true WO2000012291A1 (en) 2000-03-09

Family

ID=17109659

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1999/004665 WO2000012291A1 (en) 1998-08-28 1999-08-27 Method and device for producing lens

Country Status (1)

Country Link
WO (1) WO2000012291A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001260139A (en) * 2000-03-15 2001-09-25 Ricoh Opt Ind Co Ltd Mold for molding, molding apparatus, method for molding optical element, and optical element
WO2011025639A2 (en) * 2009-08-31 2011-03-03 Coopervision International Holding Company, Lp Demolding of ophthalmic lenses during the manufacture thereof
JP2015024552A (en) * 2013-07-25 2015-02-05 エステックオオサカ株式会社 Apparatus and method for bending
KR101805656B1 (en) * 2016-07-19 2017-12-07 주식회사 세코닉스 Apparatus for manufacturing plastic lens
CN112976623A (en) * 2019-12-17 2021-06-18 依视路国际公司 Method, apparatus, and system for edge sealing of laminate sheets containing soft deformable inner film
KR20220133188A (en) 2020-01-29 2022-10-04 니폰 제온 가부시키가이샤 A molding sheet and a method for manufacturing a molding sheet, and a method for manufacturing an optical element

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778439A (en) * 1987-06-18 1988-10-18 Peerless Machine & Tool Corporation Apparatus and method for forming a clamshell assembly
JPS6469313A (en) * 1987-09-09 1989-03-15 Olympus Optical Co Method for press-molding optical element
JPH02162012A (en) * 1988-12-16 1990-06-21 Asano Kenkyusho:Kk Unloading device of trimmed product in forming equipment
JPH03223127A (en) * 1990-01-29 1991-10-02 Matsushita Electric Ind Co Ltd Multiple-cavity metallic mold for forming lens and method for forming lens
JPH1025118A (en) * 1996-07-11 1998-01-27 Matsushita Electric Ind Co Ltd Forming of lens and forming apparatus therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4778439A (en) * 1987-06-18 1988-10-18 Peerless Machine & Tool Corporation Apparatus and method for forming a clamshell assembly
JPS6469313A (en) * 1987-09-09 1989-03-15 Olympus Optical Co Method for press-molding optical element
JPH02162012A (en) * 1988-12-16 1990-06-21 Asano Kenkyusho:Kk Unloading device of trimmed product in forming equipment
JPH03223127A (en) * 1990-01-29 1991-10-02 Matsushita Electric Ind Co Ltd Multiple-cavity metallic mold for forming lens and method for forming lens
JPH1025118A (en) * 1996-07-11 1998-01-27 Matsushita Electric Ind Co Ltd Forming of lens and forming apparatus therefor

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001260139A (en) * 2000-03-15 2001-09-25 Ricoh Opt Ind Co Ltd Mold for molding, molding apparatus, method for molding optical element, and optical element
KR101631352B1 (en) 2009-08-31 2016-06-16 쿠퍼비젼 인터내셔날 홀딩 캄파니, 엘피 Demolding of ophthalmic lenses during the manufacture thereof
WO2011025639A2 (en) * 2009-08-31 2011-03-03 Coopervision International Holding Company, Lp Demolding of ophthalmic lenses during the manufacture thereof
WO2011025639A3 (en) * 2009-08-31 2011-06-16 Coopervision International Holding Company, Lp Demolding of ophthalmic lenses during the manufacture thereof
CN102481708A (en) * 2009-08-31 2012-05-30 库柏维景国际控股公司 Demolding of ophthalmic lenses during the manufacture thereof
KR20120083299A (en) * 2009-08-31 2012-07-25 쿠퍼비젼 인터내셔날 홀딩 캄파니, 엘피 Demolding of ophthalmic lenses during the manufacture thereof
US8313675B2 (en) 2009-08-31 2012-11-20 Coopervision International Holding Company, Lp Demolding of ophthalmic lenses during the manufacture thereof
JP2015024552A (en) * 2013-07-25 2015-02-05 エステックオオサカ株式会社 Apparatus and method for bending
KR101805656B1 (en) * 2016-07-19 2017-12-07 주식회사 세코닉스 Apparatus for manufacturing plastic lens
CN112976623A (en) * 2019-12-17 2021-06-18 依视路国际公司 Method, apparatus, and system for edge sealing of laminate sheets containing soft deformable inner film
EP3838544A1 (en) * 2019-12-17 2021-06-23 Essilor International Methods, apparatuses, and systems for edge sealing laminate wafers containing a soft deformable inner film
US11833772B2 (en) 2019-12-17 2023-12-05 Essilor International Methods, apparatuses, and systems for edge sealing laminate wafers containing a soft deformable inner film
CN112976623B (en) * 2019-12-17 2024-01-02 依视路国际公司 Method, apparatus, and system for edge sealing laminate sheets containing soft deformable inner films
KR20220133188A (en) 2020-01-29 2022-10-04 니폰 제온 가부시키가이샤 A molding sheet and a method for manufacturing a molding sheet, and a method for manufacturing an optical element

Similar Documents

Publication Publication Date Title
US10934203B2 (en) Thermoforming method and thermoforming device for glass product
EP2791964B1 (en) Imprint apparatus and method of manufacturing article
KR101421910B1 (en) Transferring system and transferring method
JP6736117B1 (en) Thermoforming equipment
CN101274486A (en) Imprinting jig and imprinting apparatus
US6913057B2 (en) IC-card manufacturing apparatus
US20040226460A1 (en) Nanoimprinting apparatus and method
CN101780699A (en) Microstructure forming device and method and light guide plate thereof
WO2000012291A1 (en) Method and device for producing lens
EP1854617A1 (en) Machining method of microstructure and machining system of microstructure
CN103582616A (en) Molding device for glass molded product
KR101950993B1 (en) Motor core, apparatus for manufacturing motor core and method thereof
US20040040644A1 (en) Micro hot embossing method for quick heating and cooling, and uniformly pressing
JP2014004826A (en) Pattern forming method and mold release device
JP3042411B2 (en) Lens molding method and molding apparatus
JP7495488B2 (en) Method and apparatus for removing stamp
JPH0421528A (en) Method and device for preparing optical element
JP2014069556A (en) Method for producing mold formed part, and mold formed part production apparatus
JP2003276074A (en) Method and apparatus for producing preformed film
CN112788960B (en) Manufacturing system with thermoforming for cushioning footwear
JP6566457B1 (en) Electronic component mounting equipment
CN209813364U (en) Micro-nano hot stamping equipment based on elastic template
JP2011073344A (en) Device and method of taking-out resin molding
JP2009274237A (en) Transfer method and device
JP2005111767A (en) Plastic film laminate and its manufacturing method

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA DE JP US

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642