WO2005057478A1 - 光シート体およびその製造方法、並びに光カードおよび複合メモリカード - Google Patents
光シート体およびその製造方法、並びに光カードおよび複合メモリカード Download PDFInfo
- Publication number
- WO2005057478A1 WO2005057478A1 PCT/JP2003/015496 JP0315496W WO2005057478A1 WO 2005057478 A1 WO2005057478 A1 WO 2005057478A1 JP 0315496 W JP0315496 W JP 0315496W WO 2005057478 A1 WO2005057478 A1 WO 2005057478A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- optical
- light
- core
- groove
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
- G06K19/06046—Constructional details
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B6/122—Basic optical elements, e.g. light-guiding paths
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12166—Manufacturing methods
- G02B2006/1219—Polymerisation
Definitions
- the present invention relates to an optical sheet body capable of carrying information using an optical waveguide and a non-optical waveguide, and a method for manufacturing the same.
- the present invention relates to an optical power source and a composite memory card using such a sheet member.
- Magnetic cards are used in various fields as various credit cards, membership cards, or prepaid cards such as telephone cards and pachinko cards.
- the information carried on the magnetic stripe has been read illegally, and fraudulent use of altered or falsified counterfeit magnetic cards has frequently occurred, and the reliability of magnetic cards has been questioned. .
- a memory card has been proposed in which an optical storage area composed of a combination is formed on a magnetic card (Patent Documents 1 and 2).
- a core material is formed by aligning a plurality of optical fibers having a circular or square cross section on a plane and integrating them with an adhesive, and a plastic protective sheet is formed on both sides of the core material. It has a structure in which is bonded.
- a memory card having a structure in which such an optical storage area is formed on a magnetic card is difficult to falsify or falsify, and the information stored and held in the magnetic storage area and the optical storage area is double-checked. By doing so, it is possible to easily determine whether or not the card is a counterfeit card. Therefore, such a memory card is extremely High reliability.
- Patent Document 1 Japanese Patent No. 26282542
- Patent Document 2 Japanese Patent No. 27377841 Disclosure of the Invention
- Such a memory card has the following problems since an optical storage area is formed by a combination of transmission and blocking of light using an optical fiber.
- the bonding strength between optical fibers depends on the strength of the adhesive, there is a high possibility that the bonding strength between the optical fibers will be insufficient for practical use.
- the core material having the structure in which the optical fiber is adhered and fixed in the planar direction is easily broken.
- optical fibers are generally expensive, and a memory card in which an optical storage area is formed by using a large number of optical fibers is also expensive, which is not practical.
- an object of the present invention is to propose an optical sheet body in which an optical storage area is formed without using an optical fiber, and a method of manufacturing the same.
- Another object of the present invention is to propose an optical power card and a composite memory card using such a new optical sheet.
- the light sheet body of the present invention is the light sheet body of the present invention.
- the groove is a groove having a depth substantially corresponding to the thickness of the core sheet, and both ends of the groove are exposed from an end surface of the core sheet;
- each of the partition portions of the core sheet formed between the adjacent grooves serves as an optical waveguide.
- each partition part functions as an optical waveguide for guiding light incident from one end to the other end. Therefore, an optical storage area can be formed without using an optical fiber.
- a light-shielding groove having a depth substantially corresponding to the thickness of the core sheet is provided between the adjacent grooves. What is necessary is just to form so that it may pass. Light incident from one end face of the partition is blocked by the light blocking groove and is not guided to the other end face. Therefore, it is possible to form an optical storage area that can hold information and is composed of a combination of an optical waveguide and a non-optical waveguide.
- V-grooves can be adopted as the grooves and the light-shielding grooves, respectively.
- the grooves may be formed in parallel at predetermined intervals to form a linear optical waveguide and a non-optical waveguide having a constant width defined by each groove.
- contour shape of the core sheet may be generally rectangular.
- a contour shape such as a circle or a polygon is also possible.
- a surface protection sheet covering the front side cladding layer and a back surface protection sheet covering the back side cladding layer are provided. Is desirable.
- the front-side cladding layer is formed as a front-side adhesive layer that bonds and adheres the core sheet and the surface protection sheet, and the back-side cladding layer is bonded to the core sheet and the back protection sheet. If it is formed as a bonded backside adhesive layer, it is not necessary to separately form the clad layer and the adhesive layer. Therefore, manufacturing becomes easy. Further, at least one of the surface protection sheet and the back surface protection sheet is half It is preferable that a transparent sheet is used, and the front-side adhesive layer and the back-side adhesive layer are ultraviolet-curable adhesives.
- the translucent sheet allows a sufficient amount of ultraviolet light to pass in its thickness direction, but does not substantially transmit light because of its long distance in the plane direction.
- the translucent sheet functions as a clad layer, and the ultraviolet rays are irradiated from outside the translucent sheet, so that the adhesive bonding between the core sheet and the protective sheet can be performed easily and in a short time.
- the present invention relates to a method for manufacturing an optical sheet body having the above configuration,
- Ultraviolet rays are irradiated from the front side of the core sheet to cure the ultraviolet-curable adhesive to form the backside adhesive layer, and the backside protective layer is used to attach the backside protective sheet to the core. Laminated on the back side of the sheet,
- the surface protective sheet is irradiated with ultraviolet light to cure the ultraviolet curable adhesive to form the surface adhesive layer, and the surface protective sheet is used to form the surface protective sheet. It is characterized in that it is laminated and adhered to the surface side of the core sheet. In the method of the present invention, it is only necessary to irradiate ultraviolet rays from one side, and the grooves and the light shielding grooves can be formed from the same side. Therefore, it is easy to manufacture.
- a rotary die may be used to efficiently form the groove and the light shielding groove in the core sheet.
- grooves and light-shielding grooves can be formed by laser cutting.
- Both end surfaces of the optical waveguide and the non-optical waveguide are located at both end surfaces on the long side or short end sides of the optical sheet body.
- the composite card of the present invention is characterized by having an optical card having a powerful configuration and a magnetic storage unit.
- an IC memory chip may be provided.
- FIG. 1 (a) and 1 (b) are perspective views showing an optical card to which the present invention is applied, and are explanatory views showing the internal structure.
- FIG. 2 is a plan view of the core sheet of FIG.
- FIGS. 3 (a), (b) and (c) are explanatory views showing the manufacturing steps of the optical card shown in FIG.
- FIG. 4 is an explanatory diagram showing a rotary die used to form a V-groove in an optical card.
- FIG. 5 is an explanatory diagram showing two examples of a composite memory card according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 (a) and 1 (b) are a perspective view and an explanatory diagram showing an internal structure of an optical card to which the present invention is applied, and FIG. 2 is a plan view showing a core sheet of the optical card.
- the optical card 1 is formed of a rectangular thin, multi-layered optical sheet body, and includes a core sheet 2 and a surface-side adhesive layer 3 functioning as a surface-side cladding layer on the surface 2 a of the core sheet 2. And a back surface protection sheet 6 laminated and bonded to the back surface 2b of the core sheet 2 via a back surface side adhesive layer 5 functioning as a back surface side cladding layer.
- a large number of V-grooves 7 are formed extending at a constant interval in the short side direction of the sheet. Both ends 7a and 7b of each V groove 7 are The sheet 2 is exposed at the sheet end faces 2c and 2d on the long side.
- the partition V-grooves (light-shielding grooves) 9 are formed in the portions 8 (1), 8 (3) ⁇ in a direction orthogonal to these V-grooves 7 so as to be bridged between the adjacent V-grooves 7. ing.
- the sections 8 (2), 8 (4),... Where the V-groove 9 is not formed function as optical waveguides, and guide light incident from one sheet end face 2c to the other sheet end face 2d.
- the partition portions 8 (1), 8 (3) in which the V-grooves 9 are formed function as non-optical waveguides, and light incident from one sheet end face 2 c is The sheet is not blocked, and is not guided to the other sheet end face 2 d. Accordingly, the optical waveguide and the non-optical waveguide are formed in accordance with a predetermined arrangement pattern, and the detection light is incident on each of the partitioning portions 8 (1) to 8 (n) from the sheet end face 2c, and the other sheet end face 2 By detecting the presence or absence of light emitted from each of the sections 8 (1) to 8 (n) by the photodetector installed on the side of d, the array pattern formed on the optical card 1 can be read. it can.
- the core sheet 2 is a transparent ⁇ ⁇ sheet having a thickness of 50
- the surface protective sheet 4 is a translucent sheet having a thickness of 125
- the rear protective sheet 6 is a white PET sheet having a thickness of 75.
- an ultraviolet curable resin is used as the front-side adhesive layer 3 and the back-side adhesive layer 5.
- the V grooves 7 are formed at a pitch of 1 mm, the angle between the inclined surfaces on both sides is about 60 degrees, and the depth is substantially the same as the thickness of the core sheet 2.
- the V-groove 7 is formed by pressing a cutting edge of a rotary die or the like from the front surface 2a of the core sheet 2 as described later, and is formed in a state where the portion on the back surface 2b side of the core sheet 2 is connected.
- the V-groove 9 orthogonal to the V-groove 7 is also the same size, and in each section 8 (1), 8 (3). In the same manner, five sheets are formed at a pitch of 2 mm on the other sheet end face 2 d side.
- a non-optical waveguide capable of completely blocking incident light can be formed. That is, the light incident from the sheet end face 2c is diffused by the first five V-grooves 9 and almost attenuated, and the next five Completely blocked by the V-groove 9.
- the optical waveguide and the non-optical waveguide can be formed without using expensive optical fibers, so that the optical card 1 can be manufactured at low cost.
- V-grooves 7 and V-grooves 9 are formed on the transparent core sheet 2 from the front side, and the surface-side adhesive layer 3 which functions as a clad layer when the V-grooves 7 and 9 are filled in the surface of the core sheet 2 is provided.
- the optical waveguide and the non-optical waveguide are formed by forming a back surface side adhesive layer 5 which functions as a clad layer also on the back surface side. Therefore, compared with a memory card having a configuration in which optical fibers are bonded and fixed at equal pitches in the plane direction, an optical waveguide and a non-optical waveguide can be formed easily and accurately, and the strength and durability are high.
- FIGS. 3 (a), (b) and (c) are explanatory views showing the manufacturing steps of the optical card 1.
- a backside protective sheet 6 is prepared, and a UV-curable resin 5a is applied to a predetermined thickness on the front side 6a, and thereafter, the core sheet material to become the core sheet 2 20 are laminated.
- ultraviolet rays are irradiated from the surface side of the core sheet material 20 to cure the ultraviolet curable resin 5a.
- the backside adhesive layer 5 is formed, and the backside protective sheet 6 is laminated and adhered to the backside of the core sheet material 20 via the backside adhesive layer 5.
- an ultraviolet curable resin 3a is applied to the surface 2a of the core sheet 2.
- the UV-curable resin 3a is applied to the surface 2a of the core sheet 2 while being filled in the V-grooves 7 and 9 formed on the surface 2a of the core sheet 2.
- a translucent surface protection sheet 4 is laminated thereon. Thereafter, ultraviolet rays are irradiated from the surface side of the surface protection sheet 4.
- FIG. 4 is an explanatory diagram showing an example of a rotary die suitable for use in forming the V-grooves 7 and 9.
- 32 alignment blades 12 extending in parallel at a blade edge angle of 60 degrees, a length of 80 mm, and a pitch of l mm are formed by etching.
- a V-groove 7 is formed by these alignment blades 12.
- a translucent sheet is used as the surface protection sheet, and the front-side adhesive layer 3 and the back-side adhesive layer 5 are formed using an ultraviolet curable resin. ing. Therefore, in the manufacturing process, it is only necessary to irradiate ultraviolet rays from one side.
- V-grooves 7 and 9 can also be formed by pressing the die from the same side. Therefore, manufacture is easy. Also, by using a rotary die, the V-grooves 7 and 9 can be formed accurately and efficiently.
- FIG. 5 shows a configuration example of a composite memory card using the optical power supply 1 of the present embodiment.
- the composite memory card 30 shown in FIG. 5A has an optical card 1 and a magnetic stripe 31 printed on the surface 1a of the optical memory card 1 with a constant width in the long side direction.
- This composite memory card 30 can be used, for example, as an ID card, a prepaid card, or the like.
- the composite memory card 40 shown in FIG. 5B has a structure in which an IC chip 41 with a CPU is embedded between a core sheet of the optical card 1 and a surface protection sheet.
- This composite memory card 40 can be used as an electronic money card, an insurance card, a driver's license, etc., having a large amount of stored information.
- the optical sheet body and manufacturing method of the present invention are not limited to the shapes, structures and materials of the above examples.
- the light sheet body may have a circular or polygonal outline instead of a rectangular outline.
- a groove having a different cross-sectional shape such as a U-groove can be used.
- an adhesive other than the ultraviolet curable adhesive as the front side adhesive layer and the back side adhesive layer.
- a resin other than PET as a material of the core sheet, the surface protection sheet and the back surface protection sheet.
- the grooves may be formed by laser cutting. Industrial potential
- the optical sheet body of the present invention forms an optical waveguide by forming a plurality of grooves in the core sheet without cutting a core sheet made of a PET sheet or the like.
- the non-optical waveguide is formed by forming a light shielding groove in the core sheet without cutting the core sheet. Therefore, the optical fiber can be manufactured simply and inexpensively as compared with a conventional memory card in which an optical waveguide and a non-optical waveguide are formed by aligning and bonding an expensive optical fiber in a planar direction and bonding.
- the protective sheet can be laminated and adhered to both sides of the core sheet by irradiating ultraviolet rays from one side, and a groove and a light shielding groove can be formed from the same side. Therefore, manufacturing becomes easy and production efficiency can be improved.
- the optical memory and the composite optical memory of the present invention use an optical sheet on which an optical waveguide and a non-optical waveguide are formed without using an optical fiber, the optical memory and the composite optical memory can be manufactured easily and inexpensively. And high durability.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Credit Cards Or The Like (AREA)
- Optical Integrated Circuits (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003289151A AU2003289151A1 (en) | 2003-12-03 | 2003-12-03 | Optical sheet body and its producing method, optical card and composite memory card |
JP2005511665A JPWO2005057478A1 (ja) | 2003-12-03 | 2003-12-03 | 光シート体およびその製造方法、並びに光カードおよび複合メモリカード |
PCT/JP2003/015496 WO2005057478A1 (ja) | 2003-12-03 | 2003-12-03 | 光シート体およびその製造方法、並びに光カードおよび複合メモリカード |
US10/581,798 US20070172187A1 (en) | 2003-12-03 | 2003-12-03 | Optical sheet body and its producing method, optical card and composite memory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/015496 WO2005057478A1 (ja) | 2003-12-03 | 2003-12-03 | 光シート体およびその製造方法、並びに光カードおよび複合メモリカード |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005057478A1 true WO2005057478A1 (ja) | 2005-06-23 |
Family
ID=34674675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/015496 WO2005057478A1 (ja) | 2003-12-03 | 2003-12-03 | 光シート体およびその製造方法、並びに光カードおよび複合メモリカード |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070172187A1 (ja) |
JP (1) | JPWO2005057478A1 (ja) |
AU (1) | AU2003289151A1 (ja) |
WO (1) | WO2005057478A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2682542B2 (ja) * | 1996-03-18 | 1997-11-26 | 株式会社エムパイヤエアポートサービス | メモリカードの製造方法 |
JPH113544A (ja) * | 1997-06-12 | 1999-01-06 | Furukawa Electric Co Ltd:The | 光romカードとその製造方法 |
JPH113545A (ja) * | 1997-06-12 | 1999-01-06 | Furukawa Electric Co Ltd:The | 光romカード |
JPH11154329A (ja) * | 1997-11-20 | 1999-06-08 | Furukawa Electric Co Ltd:The | 光romカードの情報書き込み方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69407628T2 (de) * | 1993-02-01 | 1998-08-27 | Matsushita Electric Ind Co Ltd | Wellenleiter-Bildübertragungsvorrichtung und Vorrichtung zur Identifikation von Fingerabdrücken |
JPH06308549A (ja) * | 1993-04-19 | 1994-11-04 | Hoechst Japan Ltd | 分子性結晶体及びそれを用いた波長変換デバイス |
US5850498A (en) * | 1997-04-08 | 1998-12-15 | Alliedsignal Inc. | Low stress optical waveguide having conformal cladding and fixture for precision optical interconnects |
US6739744B2 (en) * | 1997-07-02 | 2004-05-25 | Lumitex, Inc. | Light delivery systems and applications thereof |
CN100456063C (zh) * | 2001-05-30 | 2009-01-28 | 日立化成工业株式会社 | 光学元件、光学元件的制造方法、涂布装置及涂布方法 |
US6864553B2 (en) * | 2002-07-30 | 2005-03-08 | Intel Corporation | Method and apparatus for a backsided and recessed optical package connection |
US6832037B2 (en) * | 2002-08-09 | 2004-12-14 | Eastman Kodak Company | Waveguide and method of making same |
-
2003
- 2003-12-03 US US10/581,798 patent/US20070172187A1/en not_active Abandoned
- 2003-12-03 WO PCT/JP2003/015496 patent/WO2005057478A1/ja active Application Filing
- 2003-12-03 AU AU2003289151A patent/AU2003289151A1/en not_active Abandoned
- 2003-12-03 JP JP2005511665A patent/JPWO2005057478A1/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2682542B2 (ja) * | 1996-03-18 | 1997-11-26 | 株式会社エムパイヤエアポートサービス | メモリカードの製造方法 |
JPH113544A (ja) * | 1997-06-12 | 1999-01-06 | Furukawa Electric Co Ltd:The | 光romカードとその製造方法 |
JPH113545A (ja) * | 1997-06-12 | 1999-01-06 | Furukawa Electric Co Ltd:The | 光romカード |
JPH11154329A (ja) * | 1997-11-20 | 1999-06-08 | Furukawa Electric Co Ltd:The | 光romカードの情報書き込み方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005057478A1 (ja) | 2007-08-23 |
US20070172187A1 (en) | 2007-07-26 |
AU2003289151A1 (en) | 2005-06-29 |
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