WO2021124989A1 - ロール金型製造方法、ロール金型製造装置、プログラムおよびマイクロレンズアレイ - Google Patents
ロール金型製造方法、ロール金型製造装置、プログラムおよびマイクロレンズアレイ Download PDFInfo
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- WO2021124989A1 WO2021124989A1 PCT/JP2020/045704 JP2020045704W WO2021124989A1 WO 2021124989 A1 WO2021124989 A1 WO 2021124989A1 JP 2020045704 W JP2020045704 W JP 2020045704W WO 2021124989 A1 WO2021124989 A1 WO 2021124989A1
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- cutting
- roll
- radial direction
- cutting blade
- control waveform
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/36—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/20—Making tools by operations not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B7/00—Automatic or semi-automatic turning-machines with a single working-spindle, e.g. controlled by cams; Equipment therefor; Features common to automatic and semi-automatic turning-machines with one or more working-spindles
- B23B7/12—Automatic or semi-automatic machines for turning of workpieces
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
-
- 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
- B29D11/00288—Lenticular sheets made by a rotating cylinder
-
- 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
- B29D11/00298—Producing lens arrays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/0048—Moulds for lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0025—Machining, e.g. grinding, polishing, diamond turning, manufacturing of mould parts
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
- G02B3/0056—Arrays characterized by the distribution or form of lenses arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/20—Top or side views of the cutting edge
- B23B2200/202—Top or side views of the cutting edge with curved cutting edge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/108—Piezoelectric elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/128—Sensors
Definitions
- the present invention relates to a roll mold manufacturing method, a roll mold manufacturing apparatus, a program, and a microlens array.
- a microlens array in which a large number of minute lenses (microlenses) are arranged two-dimensionally is used for various purposes such as a diffuser plate, a diffuser sheet, or a screen of a head-up display.
- transfer pattern an inverted pattern of the reference pattern of the microlens array (hereinafter referred to as "transfer pattern") is formed on the mold surface and applied to a resin coated on a base material.
- transfer pattern an inverted pattern of the reference pattern of the microlens array
- a desired microlens array can be manufactured by cutting the cured resin as necessary.
- a roll mold in which a transfer pattern is formed on the surface of a cylindrical or columnar roll is used, and by using the Roll to Roll method, a microlens with high mass productivity and high quality uniformity. Arrays can be manufactured.
- An object of the present invention made in view of the above problems is a roll die in which a predetermined cutting portion is cut accurately a plurality of times to form a plurality of cutting holes in which at least one of the arrangement and the depth is random. It is an object of the present invention to provide a roll mold making method for making a mold, a roll mold making device and a program, and a microlens array having a plurality of microlenses whose arrangement and height are at least one of random.
- the roll mold manufacturing method is It holds a rotating device equipped with a rotary encoder that rotates a cylindrical or columnar roll in the circumferential direction and outputs a signal according to the rotation position of the roll, and a cutting blade that can reciprocate in the radial direction of the roll.
- a roll mold manufacturing method in a roll mold manufacturing apparatus including a cutting tool stage that can move in the radial direction of the roll. Based on the signal output from the rotary encoder, a control waveform showing a movement pattern of the cutting blade that reciprocates the cutting blade in the radial direction of the roll at a position corresponding to a predetermined cutting portion on the surface of the roll is generated.
- a cutting process is performed in which the cutting blade is reciprocated in the radial direction of the roll according to the control waveform, and the predetermined cutting portion is cut one or more times at a predetermined cutting depth by the reciprocating cutting blade.
- the cutting tool stage is moved in the radial direction of the roll so that the cutting depth in the cutting step is smaller than the cutting depth in the cutting step immediately before the cutting step.
- the control waveform is generated so that at least one of the circumferential and axial arrangements of the rolls of the plurality of cutting holes and the depths of the plurality of cutting holes is random.
- the roll mold manufacturing apparatus is It holds a rotating device equipped with a rotary encoder that rotates a cylindrical or columnar roll in the circumferential direction and outputs a signal according to the rotation position of the roll, and a cutting blade that can reciprocate in the radial direction of the roll.
- a roll mold manufacturing apparatus including a cutting tool stage that can move in the radial direction of the roll. Based on the signal output from the rotary encoder, a control waveform showing a movement pattern of the cutting blade that reciprocates the cutting blade in the radial direction of the roll at a position corresponding to a predetermined cutting portion on the surface of the roll is generated.
- Signal generator and A cutting process is performed in which the cutting blade is reciprocated in the radial direction of the roll according to the control waveform, and the predetermined cutting portion is cut one or more times at a predetermined cutting depth by the reciprocating cutting blade.
- a control unit for moving the cutting tool stage in the radial direction of the roll is provided.
- the control unit The cutting tool stage is moved in the radial direction of the roll so that the cutting depth in the cutting step is smaller than the cutting depth in the cutting step immediately before the cutting step.
- the signal generator The control waveform is generated so that at least one of the circumferential and axial arrangements of the rolls of the plurality of cutting holes and the depths of the plurality of cutting holes is random.
- the program holds a rotating device equipped with a rotary encoder that rotates a cylindrical or columnar roll in the circumferential direction and outputs a signal according to the rotation position of the roll, and a cutting blade that can reciprocate in the radial direction of the roll.
- a control waveform showing a movement pattern of the cutting blade that reciprocates the cutting blade in the radial direction of the roll at a position corresponding to a predetermined cutting portion on the surface of the roll is generated.
- a cutting process is performed in which the cutting blade is reciprocated in the radial direction of the roll according to the control waveform, and the predetermined cutting portion is cut one or more times at a predetermined cutting depth by the reciprocating cutting blade.
- the cutting process of moving the cutting tool stage in the radial direction of the roll is executed so as to be performed.
- the cutting tool stage is moved in the radial direction of the roll so that the cutting depth in the cutting step is smaller than the cutting depth in the cutting step immediately before the cutting step.
- the control waveform is generated so that at least one of the circumferential and axial arrangements of the rolls of the plurality of cutting holes and the depths of the plurality of cutting holes is random.
- the microlens array according to one embodiment is A microlens array in which a plurality of microlenses are two-dimensionally arranged, which is manufactured by using a roll mold manufactured by the above roll mold manufacturing method. At least one of the arrangement of the plurality of microlenses and the height of the plurality of microlenses is random.
- a roll mold manufacturing method and a roll for manufacturing a roll mold in which a plurality of cutting holes having a random arrangement and at least one depth are formed by cutting a predetermined cutting portion accurately a plurality of times. Mold making equipment and programs, as well as microlens arrays with a plurality of microlenses at least one of arrangement and height can be provided.
- FIG. 1 It is a figure which shows the structural example of the roll mold manufacturing apparatus which concerns on one Embodiment of this invention. It is the figure which looked at the cutting edge shown in FIG. 1 from the front. It is a figure which looked at the cutting edge shown in FIG. 1 from the side view. It is a figure for demonstrating the generation of the control waveform by the signal generation part shown in FIG. It is a figure which shows an example of the arrangement pattern of the cutting hole in a general roll die. It is a figure which shows an example of the arrangement pattern of the cutting hole in the roll mold manufacturing apparatus shown in FIG. It is a flowchart which shows an example of the operation of the roll mold manufacturing apparatus shown in FIG. It is a flowchart for demonstrating the roll mold manufacturing method in the roll mold manufacturing apparatus shown in FIG.
- FIG. 8A It is a figure which photographed the surface of the roll after cutting a predetermined number of times. It is a figure which photographed the surface of the roll after cutting the roll shown in FIG. 8A once more. It is a figure which photographed the surface of the roll mold which concerns on Example 1.
- FIG. It is a figure which photographed the surface of the microlens array manufactured by using the roll mold which concerns on Example 1.
- FIG. It is a figure which photographed the surface of the roll mold which concerns on Example 2.
- FIG. It is a figure which photographed the surface of the microlens array manufactured by using the roll mold which concerns on Example 2.
- FIG. It is a figure which shows the height of the microlens of the microlens array manufactured by using the roll mold which concerns on Example 1.
- FIG. 1 is a diagram showing a configuration example of a roll mold manufacturing apparatus 10 according to an embodiment of the present invention.
- the roll mold manufacturing apparatus 10 according to the present embodiment cuts a cylindrical or columnar roll 1 to manufacture a roll mold in which a plurality of cutting holes having random arrangements and at least one depth are formed. It is a manufacturing equipment.
- the roll mold manufacturing apparatus 10 shown in FIG. 1 includes a rotating apparatus 11, a cutting blade 12, a PZT stage 13, a cutting tool stage 14, a signal generation unit 15, a control unit 16, and an amplification unit 17. Be prepared.
- the rotating device 11 supports the cylindrical or columnar roll 1 from the axial direction, and rotates the roll 1 in the circumferential direction.
- the base material of the roll 1 is made of a metal such as SUS (Steel Use Stainless).
- the surface of the roll 1 is plated with free-cutting properties such as Ni-P or Cu.
- the roll 1 is not limited to plating, and may be a free-cutting material such as pure copper or aluminum.
- the rotating device 11 includes a rotary encoder 11a.
- the rotary encoder 11a outputs a signal corresponding to the rotation position of the roll 1 to the signal generation unit 15.
- the signals corresponding to the rotation position of the roll 1 include a trigger signal output every time the rotation position of the roll 1 reaches a predetermined reference position in one rotation and a pulse signal output every time the roll 1 rotates a predetermined amount. And include.
- the cutting blade 12 is a cutting tool that cuts the roll 1.
- the cutting blade 12 is made of a hard material such as a ceramic tip, a diamond tip, or a carbide tip.
- the PZT stage 13 holds the cutting blade 12.
- the PZT stage 13 includes a PZT (lead zirconate titanate) piezoelectric element, and the PZT piezoelectric element expands and contracts according to the voltage level of the drive signal to reciprocate the cutting blade 12 in the radial direction of the roll 1. Therefore, the cutting blade 12 can be reciprocated in the radial direction of the roll 1 by the PZT stage 13.
- the driving means for driving the cutting blade 12 is not limited to the PZT piezoelectric element.
- FIG. 2A is a front view of the cutting blade 12. Further, FIG. 2B is a side view of the cutting blade 12.
- the cutting blade 12 has a circular shape.
- the cutting blade 12 is arranged so that the front surface of the cutting blade 12 faces the circumferential direction of the roll 1.
- the roll 1 is rotating in the circumferential direction.
- the cutting blade 12 By reciprocating the cutting blade 12 toward the roll 1 in the radial direction of the roll 1, the cutting blade 12 apparently moves in a semicircular shape as shown by the broken line arrow shown in FIG. 2B, and the roll 1 is moved.
- a circular bottom surface portion having the same curvature as the curvature of the circular portion of the cutting blade 12 is formed in the cutting hole.
- the cutting tool stage 14 holds the PZT stage 13 and moves in the cutting axis direction (radial direction of the roll 1) and the feed axis direction (axial direction of the roll 1).
- the PZT stage 13 and the cutting blade 12 held by the cutting tool stage 14 also move in the cutting axis direction and the feed axis direction.
- the cutting blade 12 is reciprocated in the radial direction of the roll 1 by the PZT stage 13 to cut the roll 1, and the PZT stage 13 is moved in the axial direction of the roll 1 to move the entire surface of the roll 1. It is possible to form a cutting hole over.
- the signal generation unit 15 Based on the signal output from the rotary encoder 11a, the signal generation unit 15 reciprocates the cutting blade 12 at a position corresponding to a predetermined cutting portion on the surface of the roll 1, and generates a control waveform showing a movement pattern of the cutting blade 12. Generate. The generation of the control waveform by the signal generation unit 15 will be described with reference to FIG.
- the rotary encoder 11a outputs a trigger signal every time the rotation position of the roll 1 reaches a predetermined reference position in one rotation. Specifically, for example, as shown in FIG. 3, the rotary encoder 11a outputs a pulse-shaped signal that rises every time the rotation position of the roll 1 reaches a predetermined reference position in one rotation as a trigger signal. Further, as shown in FIG. 3, the rotary encoder 11a outputs a pulse-shaped signal that rises every time the roll 1 rotates by a predetermined amount as a pulse signal. The rotary encoder 11a outputs, for example, a pulse-shaped signal that rises for each rotation amount obtained by dividing one rotation of the roll 1 by 1.44 million as a pulse signal.
- the signal generation unit 15 counts the pulse signal with reference to the output timing of the trigger signal (timing at which the trigger signal rises). Then, the signal generation unit 15 generates a control waveform according to the count number of the pulse signal. By counting the pulse signal with reference to the output timing of the trigger signal, the rotation position of the roll 1 from a predetermined reference position can be specified. Therefore, by generating the control waveform according to the count number of the pulse signal based on the output timing of the trigger signal, it is possible to accurately and repeatedly cut the predetermined cutting portion of the roll 1.
- the signal generation unit 15 arranges the rolls 1 of the plurality of cutting holes in the circumferential direction and the axial direction (two-dimensional arrangement) and the plurality of cutting holes. Generate a control waveform such that at least one of the depths is random.
- FIG. 4 is a diagram showing an example of a cutting hole arrangement pattern in a general roll die in which a plurality of cutting holes having the same depth are regularly arranged.
- one side and another side facing the other side are parallel to the axial direction, and the other two sides are inclined by about 30 degrees in the circumferential direction, and a rhombus is continuously formed in the axial direction and the circumferential direction.
- the cutting holes are centered around the four vertices of each rhombus.
- the two cutting holes centered on both ends of the side parallel to the axial direction partially overlap.
- the two cutting holes centered on both ends of the side inclined in the circumferential direction partially overlap.
- the distance between the centers of two cutting holes adjacent to each other in the circumferential direction is, for example, It is 2 ⁇ 3 * A ⁇ m.
- the distance between the centers of two cutting holes adjacent to each other in the axial direction is, for example, 2 * A ⁇ m.
- the distance between the centers of the two cutting holes centered on both ends of the side inclined in the circumferential direction is, for example, 2 * A ⁇ m.
- the depth of each cutting hole is, for example, 20 ⁇ m.
- the signal generation unit 15 in the signal generation unit 15, at least one of the circumferential and axial arrangements of the rolls 1 of the plurality of cutting holes and the depths of the plurality of cutting holes becomes random.
- the signal generation unit 15 cuts around a point in which the center of each cutting hole in the basic pattern shown by the white circle point in FIG. 5 is randomly moved in the circumferential direction and the axial direction shown by the black circle point in FIG.
- a control waveform may be generated such that a hole is formed.
- the signal generation unit 15 may generate a control waveform in which the depth of each cutting hole is random while the arrangement of each cutting hole remains the same as the basic pattern.
- the signal generation unit 15 may generate a control waveform such that the rolls 1 of the plurality of cutting holes are arranged in the circumferential direction and the axial direction, and the depths of the plurality of cutting holes are random.
- the signal generation unit 15 determines the amount of movement in the circumferential direction and the axial direction based on, for example, a random number table. You may. Further, when the depth of each cutting hole is randomized, the signal generation unit 15 may determine the depth of each cutting hole based on a random number table.
- the signal generation unit 15 generates a control waveform such that a cutting hole is formed on the roll 1 according to the cutting hole arrangement pattern described with reference to FIG. For example, when forming a plurality of cutting holes randomly arranged in the circumferential direction and the axial direction, the signal generation unit 15 is rolled by a cutting blade 12 that reciprocates at a position corresponding to each of the randomly arranged cutting holes. Generates a control waveform such that 1 is cut. Further, for example, when forming a plurality of cutting holes having random depths, the signal generation unit 15 generates a control waveform such that the reciprocating movement distance of the cutting blade 12 at each cutting position is random.
- the control unit 16 reciprocates the cutting blade 12 in the radial direction of the roll 1 according to the control waveform generated by the signal generation unit 15 to cut the roll 1. Specifically, the control unit 16 reciprocates the cutting blade 12 in the radial direction of the roll 1 based on the control waveform. Further, the control unit 16 sets the cutting tool stage 14 so that the cutting process of cutting one or more times at a predetermined cutting depth is performed a plurality of times by the cutting blade 12 that reciprocates the predetermined cutting portion of the roll 1. The roll 1 is moved in the radial direction. By doing so, the roll 1 is cut at a predetermined depth by the reciprocating cutting blade 12. The cutting depth and the number of cuttings in each cutting process are input to the control unit 16 in advance, for example. The control unit 16 generates a drive signal for driving the PZT stage 13 and outputs the drive signal to the amplification unit 17.
- An example is a case where a cutting hole is formed by a cutting process of cutting x times at a cutting depth d1 and a cutting process of cutting y times at a cutting depth d2.
- the control unit 16 drives the PZT stage 13 according to the control waveform to reciprocate the cutting blade 12 in the radial direction of the roll 1. Then, the control unit 16 sequentially moves the cutting tool stage 14 so that the roll 1 is cut x times at the cutting depth d1 by the reciprocating cutting blade 12. Next, the control unit 16 sequentially moves the cutting tool stage 14 so that the roll 1 is cut y times at the cutting depth d2 by the reciprocating cutting blade 12.
- the signal generation unit 15 reciprocates at a position corresponding to each of the randomly arranged cutting holes.
- a control waveform is generated such that the roll 1 is cut by the cutting blade 12.
- the control unit 16 drives the PZT stage 13 according to the control waveform to reciprocate the cutting blade 12 in the radial direction of the roll 1. Further, the control unit 16 moves the cutting tool stage 14 in the radial direction of the roll 1 so that the cutting blade 12 that reciprocates cuts by the cutting depth determined in the cutting process. By doing so, it is possible to form a plurality of cutting holes randomly arranged in the circumferential direction and the axial direction of the roll 1.
- the signal generation unit 15 when forming a plurality of cutting holes having random depths, the signal generation unit 15 generates a control waveform such that the reciprocating movement distance of the cutting blade 12 at each cutting position becomes random.
- the control unit 16 drives the PZT stage 13 according to the control waveform to reciprocate the cutting blade 12 in the radial direction of the roll 1 at a random distance. Further, the control unit 16 shifts the cutting tool stage 14 in the radial direction of the roll 1 so that the cutting blade 12 reciprocates to cut, for example, at a predetermined reference position by a cutting depth determined in the cutting process. Move to. By doing so, it is possible to form a plurality of cutting holes having random depths.
- the amplification unit 17 amplifies the drive signal output from the control unit 16 and outputs it to the PZT stage 13.
- the PZT stage 13 is driven by the drive signal after amplification, the cutting blade 12 reciprocates in the radial direction of the roll 1, and the roll 1 is cut.
- FIG. 6 is a flowchart showing an example of the operation of the roll mold manufacturing apparatus 10 according to the present embodiment.
- the roll 1 is placed on the rotating device 11 (step S101).
- the roll 1 is flattened to flatten the plating layer on the surface of the roll 1 (step S102).
- the PZT stage 13 is set on the cutting tool stage 14 (step S103).
- the cutting blade 12 is set on the PZT stage 13 (step S104).
- step S105 the rotation speed of the rotating device 11 is set (step S105), and the rotating device 11 starts the rotation of the roll 1 at the set rotation speed (step S106).
- the position of the cutting tool stage 14 is set to the start position in the feed axis direction and the start position in the cutting axis direction (steps S107 and S108), and the cutting tool stage 14 starts driving (step). S109).
- the roll 1 is cut by the cutting blade 12 reciprocating in the radial direction of the roll 1 according to the control waveform generated by the signal generation unit 15 (step S110).
- the cutting tool stage 14 moves to the end position in the feed axis direction, and the cutting process of cutting a predetermined cutting location at a predetermined cutting depth is repeated a plurality of times to complete the cutting of the cutting hole (step S111).
- step S112 When the cutting blade 12 is worn and it is necessary to replace the cutting blade 12, the cutting blade 12 is replaced (step S112) and the cutting blade 12 is positioned (step S113), and then steps S107 to S111 are performed. The process is repeated.
- the signal generation unit 15 moves the cutting blade 12 in the radial direction of the roll 1 at a position corresponding to a predetermined cutting position on the surface of the roll 1.
- a control waveform to be reciprocated is generated (step S201).
- the signal generation unit 15 generates a control waveform in which at least one of the circumferential and axial arrangements of the rolls 1 of the plurality of cutting holes and the depths of the plurality of cutting holes is random.
- the control unit 16 reciprocates the cutting blade 12 in the radial direction of the roll 1 according to the control waveform generated by the signal generation unit 15. Further, the control unit 16 sets the cutting tool stage 14 so that the cutting process of cutting one or more times at a predetermined cutting depth is performed a plurality of times by the cutting blade 12 that reciprocates the predetermined cutting portion of the roll 1.
- the roll 1 is moved in the radial direction (step S202). Specifically, the control unit 16 generates a drive signal of the PZT stage 13 such that the cutting blade 12 moves in the radial direction of the roll 1 according to the control waveform, and outputs the drive signal to the amplification unit 17. Further, the control unit 16 moves the cutting tool stage 14 in the radial direction of the roll 1 so that the roll 1 is cut at a cutting depth and the number of times in a predetermined cutting process.
- the cutting blade 12 is placed in the radial direction of the roll 1 at a position corresponding to a predetermined cutting portion on the surface of the roll 1 based on the signal output from the rotary encoder 11a.
- the cutting tool stage 14 is moved in the radial direction of the roll 1 so that the cutting depth in the cutting process is smaller than the cutting depth in the cutting process immediately before the cutting process.
- a control waveform is generated so that at least one of the circumferential and axial arrangements of the rolls 1 of the plurality of cutting holes and the depths of the plurality of cutting holes is random.
- a predetermined cutting portion can be accurately cut. .. Therefore, even if the cutting process of cutting once or a plurality of times at a predetermined cutting depth is repeated a plurality of times, the same cutting portion can be accurately cut. It is possible to manufacture a roll mold in which a cutting hole having a depth of is formed. Further, by reducing the cutting depth in the later cutting process, it is possible to suppress the occurrence of burrs due to cutting.
- Example 1 A roll having Ni-P plating on the surface of SUS304 was prepared. The diameter of the roll was 130 mm and the length of the roll was 250 mm.
- the prepared roll was placed on the roll mold device according to the present embodiment, and the Ni-P plating layer on the roll surface was flattened.
- the roll after flattening was cut to form a cutting hole.
- a cutting blade having a tip radius of 0.1 mm and having a circular diamond tip when viewed from the front was used.
- the rotation speed of the roll was 0.5 min-1.
- the roll was cut three times at a cutting depth of 5 ⁇ m, once at a cutting depth of 3 ⁇ m, and three times at a cutting depth of 1 ⁇ m.
- the cutting step (first cutting step) of cutting three times at a cutting depth of 5 ⁇ m the cutting step of cutting once at a cutting depth of 3 ⁇ m smaller than the cutting depth (5 ⁇ m) in the first cutting step (first cutting step). 2 cutting process) was performed. Further, after the second cutting step, a cutting step (third cutting step) of cutting three times at a cutting depth of 1 ⁇ m smaller than the cutting depth (3 ⁇ m) in the second cutting step was performed.
- 21 ⁇ m ( 5 ⁇ m ⁇ 3 + 3 ⁇ m ⁇ 1 + 1 ⁇ m ⁇ 3) cutting holes were formed in the roll to manufacture a roll die.
- control waveform a control waveform was used in which the depths of a plurality of cutting holes were random. Specifically, as the control waveform, a control waveform was used in which the depth of the cutting hole was random within the range of 21 ⁇ m ⁇ 0.75 ⁇ m.
- Example 2 a control waveform in which the arrangement and depth of a plurality of cutting holes are random is used. Specifically, as a control waveform, the arrangement of a plurality of cutting holes is random within a range of ⁇ 5 ⁇ m from the reference pattern (pitch 250 ⁇ m) shown in FIG. 4, and the depths of the plurality of cutting holes are 21 ⁇ m ⁇ 3 ⁇ m. A control waveform was used that was random in the range of. Other conditions were the same as in Example 1.
- microlens array was manufactured using the roll molds according to Examples 1 and 2.
- the microlens array was manufactured as follows. That is, an uncured acrylic UV curable resin was dropped onto a substrate made of PET (Polyethylene terephthalate) to form a curable resin layer. Next, the produced roll mold was pressed against the formed curable resin layer, and in this state, the curable resin layer was irradiated with UV light to cure the curable resin layer. After the curable resin layer was cured, the cured curable resin layer was peeled off from the roll mold to manufacture a microlens array.
- PET Polyethylene terephthalate
- the surface of the roll mold according to Examples 1 and 2 was observed with a microscope. Moreover, the surface of the microphone lens array manufactured by using these roll molds was observed by SEM (Scanning Electron Microscope). Further, the height of the microlens formed in the microlens array manufactured by using the roll mold according to Example 1 was measured by a laser microscope.
- FIG. 8A is a view of the surface of the roll taken with a microscope after cutting a predetermined cutting portion a predetermined number of times.
- FIG. 8B is a diagram in which the surface of the roll is photographed with a microscope after the roll shown in FIG. 8A is further cut once. The shooting magnifications in FIGS. 8A and 8B are the same.
- 9A and 10A are views of the surfaces of the roll dies according to Examples 1 and 2, respectively, taken with a microscope.
- 9B and 10B are SEM photographs of the surfaces of the microlens arrays manufactured by using the roll molds according to Examples 1 and 2, respectively.
- FIG. 11 is a diagram in which the height of the microlens of the microlens array manufactured by using the roll mold according to the first embodiment is measured by a laser microscope.
- FIG. 9A in the roll die according to the first embodiment, a plurality of cutting holes having a so-called honeycomb structure in which hexagonal cutting holes are arranged without gaps in a plan view are formed. Further, as shown in FIG. 10A, in the roll die according to the second embodiment, a plurality of randomly arranged cutting holes were formed. As shown in FIGS. 9A and 10A, no burrs were generated in either the roll mold according to the first embodiment or the roll mold according to the second embodiment.
- FIG. 9B in the microlens array manufactured by using the roll mold according to the first embodiment, a plurality of microlenses having a honeycomb structure were formed. However, as shown in FIG. 11, the height of each microlens was not uniform but random. As shown in FIG. 10B, in the microlens array manufactured by using the roll mold according to the second embodiment, a plurality of randomly arranged microlenses were formed. Also in the microlens array according to Example 2, the height of each microlens was not uniform but random. As shown in FIGS. 9B and 10B, burrs are supported in both the microlens array manufactured by using the roll mold according to Example 1 and the microlens array manufactured by using the roll mold according to Example 2. No configuration was formed.
- the signal generation unit 15 and the control unit 16 are composed of, for example, a computer including a memory and a processor.
- the signal generation unit 15 and the control unit 16 are configured by a computer, the signal generation unit 15 and the control unit 16 are realized by the processor reading and executing the program according to the present embodiment stored in the memory.
- the program describing the processing contents that realize each function of the signal generation unit 15 and the control unit 16 may be recorded on a recording medium that can be read by a computer. Using such a recording medium, it is possible to install the program on the computer.
- the recording medium on which the program is recorded may be a non-transient recording medium.
- the non-transient recording medium is not particularly limited, but may be, for example, a recording medium such as a CD-ROM or a DVD-ROM.
- each component can be rearranged so as not to be logically inconsistent, and a plurality of components can be combined or divided into one.
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Abstract
Description
円筒状または円柱状のロールを円周方向に回転させ、前記ロールの回転位置に応じた信号を出力するロータリーエンコーダを備える回転装置と、前記ロールの径方向に往復移動可能な切削刃を保持し、前記ロールの径方向に移動可能な切削工具用ステージとを備えるロール金型製造装置におけるロール金型製造方法であって、
前記ロータリーエンコーダから出力された信号に基づき、前記ロールの表面の所定の切削箇所に対応する位置で前記切削刃を前記ロールの径方向に往復移動させる前記切削刃の移動パターンを示す制御波形を生成する生成ステップと、
前記制御波形に従い、前記切削刃を前記ロールの径方向に往復移動させ、前記所定の切削箇所を前記往復移動する切削刃により所定の切削深さで1または複数回切削する切削工程が複数回行われるように、前記切削工具用ステージを前記ロールの径方向に移動させる切削ステップと、を含み、
前記切削ステップでは、
前記切削工程における切削深さが、当該切削工程の直前の切削工程における切削深さよりも小さくなるように、前記切削工具用ステージを前記ロールの径方向に移動させ、
前記生成ステップでは、
複数の切削孔の前記ロールの円周方向および軸方向の配置および前記複数の切削孔の深さの少なくとも一方がランダムになるような前記制御波形を生成する。
円筒状または円柱状のロールを円周方向に回転させ、前記ロールの回転位置に応じた信号を出力するロータリーエンコーダを備える回転装置と、前記ロールの径方向に往復移動可能な切削刃を保持し、前記ロールの径方向に移動可能な切削工具用ステージとを備えるロール金型製造装置であって、
前記ロータリーエンコーダから出力された信号に基づき、前記ロールの表面の所定の切削箇所に対応する位置で前記切削刃を前記ロールの径方向に往復移動させる前記切削刃の移動パターンを示す制御波形を生成する信号生成部と、
前記制御波形に従い、前記切削刃を前記ロールの径方向に往復移動させ、前記所定の切削箇所を前記往復移動する切削刃により所定の切削深さで1または複数回切削する切削工程が複数回行われるように、前記切削工具用ステージを前記ロールの径方向に移動させる制御部と、を備え、
前記制御部は、
前記切削工程における切削深さが、当該切削工程の直前の切削工程における切削深さよりも小さくなるように、前記切削工具用ステージを前記ロールの径方向に移動させ、
前記信号生成部は、
複数の切削孔の前記ロールの円周方向および軸方向の配置および前記複数の切削孔の深さの少なくとも一方がランダムになるような前記制御波形を生成する。
円筒状または円柱状のロールを円周方向に回転させ、前記ロールの回転位置に応じた信号を出力するロータリーエンコーダを備える回転装置と、前記ロールの径方向に往復移動可能な切削刃を保持し、前記ロールの径方向に移動可能な切削工具用ステージとを備えるロール金型製造装置のコンピュータに、
前記ロータリーエンコーダから出力された信号に基づき、前記ロールの表面の所定の切削箇所に対応する位置で前記切削刃を前記ロールの径方向に往復移動させる前記切削刃の移動パターンを示す制御波形を生成する生成処理と、
前記制御波形に従い、前記切削刃を前記ロールの径方向に往復移動させ、前記所定の切削箇所を前記往復移動する切削刃により所定の切削深さで1または複数回切削する切削工程が複数回行われるように、前記切削工具用ステージを前記ロールの径方向に移動させる切削処理とを実行し、
前記切削処理では、
前記切削工程における切削深さが、当該切削工程の直前の切削工程における切削深さよりも小さくなるように、前記切削工具用ステージを前記ロールの径方向に移動させ、
前記生成処理では、
複数の切削孔の前記ロールの円周方向および軸方向の配置および前記複数の切削孔の深さの少なくとも一方がランダムになるような前記制御波形を生成する。
上記ロール金型製造方法により製造されたロール金型を用いて製造された、複数のマイクロレンズが二次元的に配置されたマイクロレンズアレイであって、
前記複数のマイクロレンズの配置、および、前記複数のマイクロレンズの高さの少なくとも一方がランダムである。
SUS304の表面にNi-Pのめっきを施したロールを用意した。ロールの直径は130mmであり、ロールの長さは250mmであった。
本実施例では、制御波形として、複数の切削孔の配置および深さがランダムになるような制御波形を用いた。具体的には、制御波形として、複数の切削孔の配置が、図4に示す基準パターン(ピッチ250μm)から±5μmの範囲でランダムとなり、かつ、複数の切削孔の深さが、21μm±3μmの範囲でランダムとなるような制御波形を用いた。他の条件は、実施例1と同じとした。
11 回転装置
11a ロータリーエンコーダ
12 切削刃
13 PZTステージ
14 切削工具用ステージ
15 信号生成部
16 制御部
17 増幅部
Claims (5)
- 円筒状または円柱状のロールを円周方向に回転させ、前記ロールの回転位置に応じた信号を出力するロータリーエンコーダを備える回転装置と、前記ロールの径方向に往復移動可能な切削刃を保持し、前記ロールの径方向に移動可能な切削工具用ステージとを備えるロール金型製造装置におけるロール金型製造方法であって、
前記ロータリーエンコーダから出力された信号に基づき、前記ロールの表面の所定の切削箇所に対応する位置で前記切削刃を前記ロールの径方向に往復移動させる前記切削刃の移動パターンを示す制御波形を生成する生成ステップと、
前記制御波形に従い、前記切削刃を前記ロールの径方向に往復移動させ、前記所定の切削箇所を前記往復移動する切削刃により所定の切削深さで1または複数回切削する切削工程が複数回行われるように、前記切削工具用ステージを前記ロールの径方向に移動させる切削ステップと、を含み、
前記切削ステップでは、
前記切削工程における切削深さが、当該切削工程の直前の切削工程における切削深さよりも小さくなるように、前記切削工具用ステージを前記ロールの径方向に移動させ、
前記生成ステップでは、
複数の切削孔の前記ロールの円周方向および軸方向の配置および前記複数の切削孔の深さの少なくとも一方がランダムになるような前記制御波形を生成する、ロール金型製造方法。 - 請求項1に記載のロール金型製造方法において、
前記ロールの回転位置に応じた信号は、前記ロールの回転位置が一回転における所定の基準位置に達するごとに出力されるトリガ信号と、前記ロールが所定量回転するごとに出力されるパルス信号とを含み、
前記生成ステップでは、前記トリガ信号の出力タイミングを基準として前記パルス信号をカウントし、前記パルス信号のカウント数に応じて前記制御波形を生成する、ロール金型製造方法。 - 円筒状または円柱状のロールを円周方向に回転させ、前記ロールの回転位置に応じた信号を出力するロータリーエンコーダを備える回転装置と、前記ロールの径方向に往復移動可能な切削刃を保持し、前記ロールの径方向に移動可能な切削工具用ステージとを備えるロール金型製造装置であって、
前記ロータリーエンコーダから出力された信号に基づき、前記ロールの表面の所定の切削箇所に対応する位置で前記切削刃を前記ロールの径方向に往復移動させる前記切削刃の移動パターンを示す制御波形を生成する信号生成部と、
前記制御波形に従い、前記切削刃を前記ロールの径方向に往復移動させ、前記所定の切削箇所を前記往復移動する切削刃により所定の切削深さで1または複数回切削する切削工程が複数回行われるように、前記切削工具用ステージを前記ロールの径方向に移動させる制御部と、を備え、
前記制御部は、
前記切削工程における切削深さが、当該切削工程の直前の切削工程における切削深さよりも小さくなるように、前記切削工具用ステージを前記ロールの径方向に移動させ、
前記信号生成部は、
複数の切削孔の前記ロールの円周方向および軸方向の配置および前記複数の切削孔の深さの少なくとも一方がランダムになるような前記制御波形を生成する、ロール金型製造装置。 - 円筒状または円柱状のロールを円周方向に回転させ、前記ロールの回転位置に応じた信号を出力するロータリーエンコーダを備える回転装置と、前記ロールの径方向に往復移動可能な切削刃を保持し、前記ロールの径方向に移動可能な切削工具用ステージとを備えるロール金型製造装置のコンピュータに、
前記ロータリーエンコーダから出力された信号に基づき、前記ロールの表面の所定の切削箇所に対応する位置で前記切削刃を前記ロールの径方向に往復移動させる前記切削刃の移動パターンを示す制御波形を生成する生成処理と、
前記制御波形に従い、前記切削刃を前記ロールの径方向に往復移動させ、前記所定の切削箇所を前記往復移動する切削刃により所定の切削深さで1または複数回切削する切削工程が複数回行われるように、前記切削工具用ステージを前記ロールの径方向に移動させる切削処理とを実行させ、
前記切削処理では、
前記切削工程における切削深さが、当該切削工程の直前の切削工程における切削深さよりも小さくなるように、前記切削工具用ステージを前記ロールの径方向に移動させ、
前記生成処理では、
複数の切削孔の前記ロールの円周方向および軸方向の配置および前記複数の切削孔の深さの少なくとも一方がランダムになるような前記制御波形を生成する、プログラム。 - 請求項1に記載のロール金型製造方法により製造されたロール金型を用いて製造された、複数のマイクロレンズが二次元的に配置されたマイクロレンズアレイであって、
前記複数のマイクロレンズの配置、および、前記複数のマイクロレンズの高さの少なくとも一方がランダムである、マイクロレンズアレイ。
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20250042196A (ko) | 2025-03-26 |
| TWI877040B (zh) | 2025-03-11 |
| KR102784489B1 (ko) | 2025-03-21 |
| CN114728342A (zh) | 2022-07-08 |
| JP2024028340A (ja) | 2024-03-04 |
| JP7710505B2 (ja) | 2025-07-18 |
| JP7413001B2 (ja) | 2024-01-15 |
| JP2021098236A (ja) | 2021-07-01 |
| TWI850503B (zh) | 2024-08-01 |
| KR20220084371A (ko) | 2022-06-21 |
| US20230015044A1 (en) | 2023-01-19 |
| TW202126455A (zh) | 2021-07-16 |
| TW202440298A (zh) | 2024-10-16 |
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