WO1999040464A1 - Piece optique - Google Patents
Piece optique Download PDFInfo
- Publication number
- WO1999040464A1 WO1999040464A1 PCT/JP1999/000508 JP9900508W WO9940464A1 WO 1999040464 A1 WO1999040464 A1 WO 1999040464A1 JP 9900508 W JP9900508 W JP 9900508W WO 9940464 A1 WO9940464 A1 WO 9940464A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- optical fiber
- optical component
- core
- cross
- Prior art date
Links
Classifications
-
- 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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02042—Multicore optical fibres
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
- G02B6/3841—Means for centering or aligning the light guide within the ferrule using rods, balls for light guides
- G02B6/3842—Means for centering or aligning the light guide within the ferrule using rods, balls for light guides for a plurality of light guides
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S385/00—Optical waveguides
- Y10S385/901—Illuminating or display apparatus
Definitions
- the present invention relates to an optical component having a plurality of optical fibers arranged.
- an optical component formed by arranging a plurality of optical fibers is widely known.
- the optical component has an entrance surface and an exit surface where the core and the clad of each optical fiber are exposed, and is capable of transmitting an optical image incident on the entrance surface to the exit surface.
- the above-mentioned optical components have various advantages such as high transmission efficiency and downsizing of the optical system as compared with lenses, and are used in various fields such as fingerprint detection devices. Disclosure of the invention
- the production of the above optical components is usually performed by arranging and bundling a plurality of optical fibers having a circular or square cross section and integrally molding them. Therefore, due to the pressing during integral molding, the cross section of the core of the optical fiber constituting the optical component becomes a polygon having opposite sides parallel to each other, such as a square or a hexagon, as shown below. Problems arise.
- the present invention solves such a problem and prevents the occurrence of pattern noise to solve the problem. It is an object to provide an optical component having a high image resolution.
- an optical component according to the present invention is an optical component in which a plurality of optical fibers are arranged, and a cross-sectional shape of a core of each optical fiber is substantially fan-shaped.
- FIG. 1A is a perspective view of an optical component according to the first embodiment of the present invention.
- FIG. 1B is an enlarged sectional view taken along the line II of FIG. 1A.
- 2A to 2F are manufacturing process diagrams of an optical fiber pair forming an optical component.
- 2G to 2J are cross-sectional views of a base material and the like manufactured in each step.
- FIG. 3 is an enlarged cross-sectional view of an optical fiber pair used for manufacturing an optical component.
- Fig. 4 is a diagram showing the progress of light in the core of the optical fiber constituting the optical component.
- FIG. 5 is a diagram showing a state of propagation of light in a core of an optical fiber constituting an optical component.
- 6A to 6F are manufacturing process diagrams of an optical fiber pair constituting an optical component.
- 6G to 6J are cross-sectional views of the base material and the like manufactured in each step.
- FIG. 7 is an enlarged sectional view of the optical component according to the first embodiment of the present invention.
- FIG. 8 is an enlarged sectional view of the optical component according to the second embodiment of the present invention.
- FIG. 9 is an enlarged sectional view of the optical component according to the third embodiment of the present invention.
- 10A to 10C are manufacturing process diagrams of an optical component according to the related art.
- 11A to 11C are manufacturing process diagrams of an optical component according to the related art.
- 12A to 12C are manufacturing process diagrams of an optical component according to the related art.
- FIGS. 13A to 13C are diagrams showing the progress of light in a core of an optical fiber constituting an optical component according to the related art.
- FIGS. 14A to 14C are diagrams showing a state of propagation of light in a core of an optical fiber constituting an optical component according to the related art.
- FIG. 1A is a perspective view of the optical component according to the present embodiment
- FIG. 1B is an enlarged cross-sectional view taken along a line I-I (a straight line parallel to the X axis) in FIG. 1A.
- the optical component 10 is formed by arranging a plurality of optical fibers having a semicircular core (semicircular with a central angle of 180 °) in cross section, in parallel with each other. Each optical fiber is arranged so that the optical axis is parallel to the y-axis in FIG. 1A.
- the optical component 10 has an incident surface 10a cut obliquely with respect to the optical axis, and an optical axis. And an emission surface 10b cut perpendicular to the input surface 10b, so that an input pattern incident on the incidence surface 10a can be reduced and output from the emission surface 10b.
- the cross section of the optical component 10 is as shown in FIG. 1B. That is, an optical fiber pair in which two optical fibers each having a core 14 having a semicircular cross section are combined so as to have a substantially circular cross section is regularly arranged.
- the optical fiber pairs are regularly arranged, but the directions of the two cores 14 having a semicircular cross-sectional shape constituting the optical fiber pair are as shown in FIG. 1B.
- “random” means that at least one of the optical fiber pairs arranged adjacent to each other has a different facing direction of the two cores 14 constituting the optical fiber pair.
- the cladding 16 of each optical fiber is integrated by heating and pressurizing, and the two optical fibers constituting the optical fiber pair are combined. It is provided so as to fill the gap between the cores 14 of the Aiva and the gap between adjacent optical fiber pairs.
- the core 14 is made of, for example, barium-lanthanum glass having a refractive index of 1.82
- the clad 16 is made of, for example, borosilicate glass having a refractive index of 1.495.
- the diameter of the core 14 is about 6 m
- the part of the clad 16 provided in the gap between the two cores 14 has a wavelength (550) normally used in the optical component 10.
- nm of about 0.5 zm, which is 1/3 or more of the thickness.
- adjacent optical fiber pairs are separated from each other by about 0.5 m or more via the clad 16, similarly to the portion provided in the gap between the cores 14.
- the clad 16 has a light absorber 17 extending in the axial direction of each optical fiber.
- Light absorbing material Light absorbing material
- the light absorber 17 By inserting the light absorber 17 into the clad 16 part, stray light leaking into the clad 16 or light entering the optical component 10 from the side surface (other than the incident surface and the emission surface) Can be effectively removed, and the resolution of the output pattern can be increased.
- FIGS. 2G to 2J are cross-sectional views of a base material and the like manufactured in each process.
- a core preform 18 having a columnar shape is manufactured as in the case of manufacturing an ordinary optical fiber (FIGS. 2A and 2G).
- the core base material 18 is formed of, for example, barium-lanthanum glass having a refractive index of 1.82, and the side surface thereof is polished by a method such as memorize polishing.
- the core base material 18 manufactured in the above process is cut vertically (in a direction perpendicular to the bottom surface of the cylindrical shape) by a diamond cutter or the like, so that two core base materials 20 and 22 having a semi-cylindrical shape are formed. Divide (Fig. 2B, Fig. 2H). At this time, the cut surface is polished by a method such as ceria polishing.
- the plate-shaped clad base material 24 shown in FIG. And 24 (Fig. 2D, Fig. 21).
- the cladding base material 24 is formed of, for example, borosilicate glass having a refractive index of 1.495.
- the plate-shaped clad matrix 24 sandwiched between the two core matrixes 22 and 24, produced in the above process, has a pipe-shaped clad as shown in FIG. 2E.
- the preform 26 is loaded into the preform 26 to produce a preform 28 for the production of an optical fiber pair (FIG. 2F, FIG. 2J).
- the cladding base material 26 is also formed of, for example, borosilicate glass having a refractive index of 1.495, similarly to the cladding base material 24, and has one bottom 26a of the cladding base material 26. Is sealed by a method such as melting with a burner.
- FIG. 3 shows an enlarged cross section of the optical fiber pair manufactured by this method.
- the optical fiber pair 30 two cores 14 having a semicircular cross section are arranged facing each other, and a cladding is formed around the gap between the two cores 14 and around the two cores 14 (a part other than the above gap). It has a shape with 16 provided.
- the portion of the cladding 16 provided around the core 14 has a thickness sufficient to fill the gap between the adjacent optical fiber pair 30 when the optical component 10 is manufactured. have.
- the portion provided in the gap between the two cores 14 has a sufficient thickness to function as a clad that separates the two cores 14.
- the specific shape of the optical fiber pair 30 is such that the diameter of the core 14 is about 6 m, and the thickness of the part of the clad 16 provided around the core 14 is about 0.25 m, Considering that the wavelength used is 550 nm, the thickness of the portion of the clad 16 provided in the gap between the two cores 14 is about 0.5 zm.
- a partition may be provided to separate the two cores 14 for the purpose of changing the optical path direction due to the difference in refractive index.However, such a partition is extremely thin, so that it acts as a clad. And the two cores act as a single core having a circular cross-section. I can't get it.
- the plurality of optical fiber pairs 30 manufactured by the above process are arranged in parallel with each other while appropriately inserting a rod-shaped light absorber 17, and are integrally molded by heating and pressurizing. 0 is manufactured.
- optical components according to the related art are usually carried out by arranging a plurality of optical fibers having a circular or square cross section in parallel with each other, bundling them, and integrally molding them. Also, in order to improve the resolution of the optical component, a process in which the bundled optical fiber group is further drawn (multi-fiber) is arranged in parallel, bundled and integrally formed, or a process of bundling with the above-described drawing process is performed. In some cases, optical components are manufactured by integrally molding a material that has been repeated several times (multi-multi fiber).
- FIGS. 10A to 10C, 11A to 11C, and 12 to 12 Changes in the cross-sectional shape of the core of each optical fiber when an optical component is manufactured by the above manufacturing method are shown in FIGS. 10A to 10C, 11A to 11C, and 12 to 12 (. C shows a change in the cross-sectional shape of the core 2 when the optical component 6 is formed by arranging optical fibers 4 each having a circular cross section of the core 2 on all sides.
- the core of each optical fiber 4 is heated and pressed when the optical fibers 4 are bundled and integrally formed.
- the cross section of 2 is transformed into a substantially square.
- the degree of deformation depends on the hardness of the core 2 and the clad 8 of the optical fiber 4 at the temperature during the heating / pressing process. If the core 2 is extremely hard compared to the clad 8, the cross section of the core 2 can be maintained circular, but the core 2 is made extremely hard compared to the clad 8 to avoid contact between adjacent cores 2. It is difficult in practice.
- Figures 11A to 11C show optical components in which optical fibers 4 with a circular cross section of core 2 are arranged hexagonally.
- FIGS. 12A to 12C show changes in the cross-sectional shape of the core 2 when the optical component 6 is formed by arranging optical fins 4 each having a square cross-section of the core 2 on all sides. In this case, since the gap between the adjacent clads 8 is eliminated when each optical fiber 4 is arranged, the cross section of the core 2 is maintained even after the heating-pressing process when the optical fibers 4 are bundled and integrally formed. Maintained square.
- the cross section of the core 2 of each optical fiber 4 is a polygon having opposite sides parallel to each other, such as a square or a hexagon, the following is shown.
- the light traveling in the core 2 of the light incident on the incident surface of the optical component 6 has a spiral progression as shown in FIGS. 13A to 13C and a belt-like progression as shown in FIGS. 14A to 14C. Both can occur.
- white circles and black circles in FIGS. 13A to 13C and 14A to 14C indicate the light incident positions.
- FIG. 13A shows how the light incident on the incident surface (incident surface of the core 2) 6a of the optical component 6 travels in the core 2
- Fig. 13B shows the trajectory of the light.
- FIG. 6 is a diagram projected on a plane parallel to the incident surface 6a.
- the light incident on the entrance surface 6a of the optical component 6 at a random incident angle except for the specific incident angles described using Figs.
- the core 2 spirally progresses.
- FIG. 13C even when light enters the incident surface 6a of the optical component 6 at a constant incident angle ⁇ , the light exits the optical component 6 due to the difference in the incident position. Light exits from surface 6b at various exit angles.
- the light was incident on the incident surface 6a of the optical component 6 at a specific incident angle (the incident angle at which light reflected and traveled only by the parallel facing surface of the core 2).
- a specific incident angle the incident angle at which light reflected and traveled only by the parallel facing surface of the core 2.
- Light travels in a band in the core 2.
- FIG. 14C when light enters the incident surface 6a of the optical component 6 at a constant incident angle 0, the light exits from the optical component 6 regardless of the difference in the incident position.
- the light is also emitted from the surface 6b at an emission angle of 0. Therefore, the output image emitted from the emission surface 6b of the optical component 6 has a specific output.
- a pattern having intensity only at the angle of incidence is formed, and this pattern becomes noise and reduces the resolution of the optical component 6.
- an optical component manufactured by integrally molding a multi-fiber (the same applies to a multi-fiber) has a different degree of deformation of the core 2 between the center and the edge of the multi-fiber. Due to the difference in degree, pattern noise occurs according to the cross-sectional shape of the multi-fiber, and the resolution of the optical component 6 is significantly reduced.
- Figs. 4 and 5 show the trajectory of light that enters the optical element 10's entrance surface (the entrance surface of the core 14) 10a and travels through the core 14 in a plane parallel to the entrance surface 10a. It is the figure which projected.
- the white circles in FIGS. 4 and 5 indicate the incident positions of light. Since the cross section of the core 14 is semicircular and does not have opposite sides that are parallel to each other, light incident from the incident surface 10 a of the optical component 10 is only emitted by the parallel opposite surface of the core 14. The phenomenon of reflection and traveling in a band shape disappears. That is, as can be seen from the trajectories shown in FIGS. 4 and 5, the light traveling in the core 14 enters the interface between the core 14 and the clad 16 at various angles, and at various angles. reflect.
- the optical component 10 Since the optical component 10 has a semicircular cross section of the core 14 constituting the optical component 10, a pattern having intensity only at a specific emission angle is not formed. As a result, it is possible to prevent the generation of the turn noise, and it is possible to obtain an output image with high resolution from the emission surface 1 Ob of the optical component 10.
- the core 14 appears as a cross section of the core 14. Since the semicircular orientation is random for each optical fiber pair, it is possible to prevent the formation of a pattern having intensity only at a specific launch angle, and to obtain a high-resolution output image Obviously
- the optical component 10 according to the present embodiment can also be manufactured by the following method.
- 6A to 6F are manufacturing process diagrams of an optical fiber pair constituting the optical component 10
- FIGS. 6G to 6J are cross-sectional views of a preform and the like manufactured in each process.
- FIGS. 2A to 2J The differences between this manufacturing method and the manufacturing method already described with reference to FIGS. 2A to 2J are as follows. That is, in the above manufacturing method, a plate-shaped clad base material 24 as shown in FIG. 2C is sandwiched between two core base materials 22 and 24 (FIG. 2D, FIG. 21). Was loaded into the cladding preform 26 to produce a preform 28 for the production of an optical fiber pair (Fig. 2F, Fig. 2J). On the other hand, in the present manufacturing method, as shown in FIG. 6C, a plate-shaped clad base material 24 and two rod-shaped members 32 each having a rod-shaped light absorber 17 covered with a clad material are provided.
- the clad base material 24 was sandwiched between two core base materials 22 and 24, and two rod-shaped members 32 were arranged on both sides of the clad base material 24 (Fig. 6D, Fig. 61). This is loaded into a cladding preform 26 to produce a preform 34 for producing an optical fiber pair.
- the optical component 10 is manufactured by drawing the base material 34 for manufacturing such an optical fiber pair, arranging the base material 34 in parallel with each other, and integrally forming the base material by a heat / pressure treatment.
- the cross section of the optical component 36 manufactured using the base material 34 is also an optical fiber having a core 14 having a substantially semi-circular cross-section.
- the optical fiber pair that combines the two has a regularly arranged shape.
- the optical component 40 according to the present embodiment is configured as the optical component 10 according to the first embodiment.
- the optical component 10 according to the first embodiment is formed by arranging a plurality of optical fibers having a semicircular cross section of the core 14 in parallel with each other.
- the optical component 40 according to the embodiment is characterized in that a plurality of optical fibers having a core having a 1/3 circular cross section (a sector having a central angle of 120 degrees) are arranged in parallel with each other.
- the cross section of the optical component 40 is as shown in FIG. That is, three sets of optical fibers each having an optical fiber having a core 14 having a 1/3 circular cross section are combined so as to have a substantially circular cross section, and are regularly arranged.
- the optical fiber sets are regularly arranged, but the directions of the three cores 14 having a 1/3 circular cross-sectional shape constituting the optical fiber set are as shown in FIG. However, it is random for each optical fiber group.
- “random” means that at least one of the optical fiber pairs arranged adjacent to each other has a different direction of the central angle of the three cores 14 constituting the optical fiber pair.
- the clad 16 of each optical fiber is integrated by heating and pressurizing, and the gap between the cores 14 of the three optical fibers constituting the optical fiber group and the gap between the adjacent optical fiber groups are formed. It is provided so as to fill the gap.
- the optical component 40 according to the present embodiment can be manufactured by the same manufacturing method as the optical component 10 according to the first embodiment.
- optical component 40 according to the present embodiment also has the same operation and effect as the optical component 10 according to the first embodiment, and it is possible to obtain a high-resolution output image.
- the optical component 50 according to the present embodiment is structurally different from the optical component 10 according to the first embodiment in that the optical component 10 according to the first embodiment has a core having a semicircular cross-sectional shape. While a plurality of optical fibers are formed by arranging them in parallel with each other, the optical component 50 according to the present embodiment has a core having a 1/4 circular cross section (a central angle of 90 °). It is a point that a plurality of optical fibers (sector of degree) are formed by arranging them in parallel with each other.
- the cross section of the optical component 50 is as shown in FIG. That is, an optical fiber set in which four optical fibers each having a core 14 whose cross section is a quarter circle are combined so as to have a substantially circular cross section is regularly arranged.
- the optical fiber sets are regularly arranged, but the directions of the four cores 14 having a quarter circular cross-sectional shape constituting the optical fiber set are as shown in FIG. However, it is random for each optical fiber group.
- “random" means that at least one of the optical fiber pairs arranged adjacent to each other has a different direction of the central angle of the four cores 14 constituting the optical fiber pair.
- the cladding 16 of each optical fiber is integrated by heating and pressurizing, and the gap between the cores 14 of the four optical fibers constituting the optical fiber group and the gap between the adjacent optical fiber groups are formed. It is provided so as to fill the gap.
- the optical component 50 according to the present embodiment can be manufactured by the same manufacturing method as the optical component 10 according to the first embodiment.
- optical component 50 according to the present embodiment also has the same operation and effect as the optical component 10 according to the first embodiment, and it is possible to obtain a high-resolution output image.
- optical components 10, 36, 40, and 50 are optical components in which a plurality of optical fibers are arranged in parallel. It may be a tapered optical component that is arranged by holding and enlarging or reducing the light image incident on the incident surface.
- optical components have various advantages, such as high transmission efficiency and the ability to reduce the size of the optical system as compared to lenses, so that various optical components such as fingerprint detection devices and radiation detectors are used. Available for the field.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Optical Couplings Of Light Guides (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU21867/99A AU2186799A (en) | 1998-02-05 | 1999-02-05 | Optical part |
DE69924713T DE69924713T2 (de) | 1998-02-05 | 1999-02-05 | Faseroptische Komponente zur Bildübertragung |
EP99901949A EP1061385B1 (en) | 1998-02-05 | 1999-02-05 | Optical fibre component for image transport |
JP2000530819A JP4012686B2 (ja) | 1998-02-05 | 1999-02-05 | 光学部品 |
US09/632,807 US6522816B1 (en) | 1998-02-05 | 2000-08-04 | Optical fiber bundle array component |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/24608 | 1998-02-05 | ||
JP2460898 | 1998-02-05 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/632,807 Continuation-In-Part US6522816B1 (en) | 1998-02-05 | 2000-08-04 | Optical fiber bundle array component |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999040464A1 true WO1999040464A1 (fr) | 1999-08-12 |
Family
ID=12142872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/000508 WO1999040464A1 (fr) | 1998-02-05 | 1999-02-05 | Piece optique |
Country Status (7)
Country | Link |
---|---|
US (1) | US6522816B1 (ja) |
EP (1) | EP1061385B1 (ja) |
JP (1) | JP4012686B2 (ja) |
CN (1) | CN1119677C (ja) |
AU (1) | AU2186799A (ja) |
DE (1) | DE69924713T2 (ja) |
WO (1) | WO1999040464A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7292760B2 (en) * | 2002-12-09 | 2007-11-06 | Eastman Kodak Company | Optical converter formed from flexible strips |
JP2011209702A (ja) * | 2010-03-10 | 2011-10-20 | Sumitomo Electric Ind Ltd | マルチコア光ファイバ |
CN106772791B (zh) * | 2017-04-01 | 2019-04-19 | 中国建筑材料科学研究总院 | 低杂散光串扰型光纤传像元件及其制备方法 |
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IT1217739B (it) * | 1988-05-31 | 1990-03-30 | Pirelli General Plc | Guida d'onda dielettrica a birifrangenza circolare |
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JPH0894864A (ja) * | 1994-04-08 | 1996-04-12 | Olympus Optical Co Ltd | イメージファイバー及びその製造方法 |
JP2816097B2 (ja) * | 1994-07-27 | 1998-10-27 | 日立電線株式会社 | 希土類元素添加マルチコア光ファイバ、その製造方法、およびその光ファイバを利用した光増幅器 |
JPH10153711A (ja) * | 1996-09-30 | 1998-06-09 | Bridgestone Corp | 分岐型光伝送装置 |
US6115526A (en) * | 1997-03-27 | 2000-09-05 | Brown University Research Foundation | Ultra high numerical aperture high power optical fiber laser |
US6064055A (en) * | 1998-06-11 | 2000-05-16 | Litton Systems, Inc. | Night vision device having fine-resolution image intensifier tube, microchannel plate for such an image intensifier tube, and method of making |
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1999
- 1999-02-05 WO PCT/JP1999/000508 patent/WO1999040464A1/ja active IP Right Grant
- 1999-02-05 JP JP2000530819A patent/JP4012686B2/ja not_active Expired - Fee Related
- 1999-02-05 AU AU21867/99A patent/AU2186799A/en not_active Abandoned
- 1999-02-05 DE DE69924713T patent/DE69924713T2/de not_active Expired - Lifetime
- 1999-02-05 EP EP99901949A patent/EP1061385B1/en not_active Expired - Lifetime
- 1999-02-05 CN CN99803696.XA patent/CN1119677C/zh not_active Expired - Lifetime
-
2000
- 2000-08-04 US US09/632,807 patent/US6522816B1/en not_active Expired - Lifetime
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JPS4118867B1 (ja) * | 1962-11-19 | 1966-10-31 | ||
JPS4929652A (ja) * | 1972-07-10 | 1974-03-16 | ||
JPS6126002A (ja) * | 1984-07-17 | 1986-02-05 | Hoya Corp | 集光性屈折率分布型ロツドレンズアレ−の製造法 |
JPS63110402A (ja) * | 1986-10-29 | 1988-05-14 | Fujikura Ltd | イメ−ジフアイバ |
JPH0990143A (ja) * | 1995-09-27 | 1997-04-04 | Hitachi Cable Ltd | マルチコア光ファイバの製造方法 |
JPH10197805A (ja) * | 1997-01-10 | 1998-07-31 | Fujikura Ltd | 細径ファイバスコープ及びその製造方法 |
JP6090333B2 (ja) * | 2012-12-03 | 2017-03-08 | 日産自動車株式会社 | 非接触給電装置、非接触給電システム及び非接触給電方法 |
Also Published As
Publication number | Publication date |
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DE69924713T2 (de) | 2006-03-02 |
EP1061385A1 (en) | 2000-12-20 |
JP4012686B2 (ja) | 2007-11-21 |
CN1119677C (zh) | 2003-08-27 |
EP1061385B1 (en) | 2005-04-13 |
CN1292881A (zh) | 2001-04-25 |
US6522816B1 (en) | 2003-02-18 |
DE69924713D1 (de) | 2005-05-19 |
EP1061385A4 (en) | 2003-03-26 |
AU2186799A (en) | 1999-08-23 |
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