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公开(公告)号：AU640558B2
公开(公告)日：1993-08-26
申请号：AU1286492
申请日：1992-03-12
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , OKAJIMA HISAKAZU
Abstract: An optical ferrule including a non-metallic sleeve 11 formed with a through bore having a small bore portion 14 and a large bore portion 1. A bare fiber 13 and a coating 15 of an optical fiber 12 are adhesively fixed in the small bore portion and the large bore portion, respectively. The large bore portion 16 has at least one groove 17 formed in the inner surface thereof, the optical fiber has a rough surface portion 20 formed in the coating in at least a portion opposing to the groove, a glass tube 18 is inserted in the large bore portion between the small bore portion and the end face of the coating of the optical fiber and has an outer diameter larger than the inner diameter of the small bore portion and an inner diameter adapted for inserting of the bare fiber, and an adhesive 21 is filled between the components including the inner surface of the sleeve. Thereby, an optical ferrule having superior reliability and durability and capable of long use in stable condition is provided.
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公开(公告)号：CA2063187C
公开(公告)日：1996-12-31
申请号：CA2063187
申请日：1992-03-17
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , OKAJIMA HISAKAZU
Abstract: An optical ferrule including a non-metallic sleeve 11 formed with a through bore having a small bore portion 14 and a large bore portion 1. A bare fiber 13 and a coating 15 of an optical fiber 12 are adhesively fixed in the small bore portion and the large bore portion, respectively. The large bore portion 16 has at least one groove 17 formed in the inner surface thereof, the optical fiber has a rough surface portion 20 formed in the coating in at least a portion opposing to the groove, a glass tube 18 is inserted in the large bore portion between the small bore portion and the end face of the coating of the optical fiber and has an outer diameter larger than the inner diameter of the small bore portion and an inner diameter adapted for inserting of the bare fiber, and an adhesive 21 is filled between the components including the inner surface of the sleeve. Thereby, an optical ferrule having superior reliability and durability and capable of always using in stable condition is provided.
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公开(公告)号：AU1286492A
公开(公告)日：1992-10-08
申请号：AU1286492
申请日：1992-03-12
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , OKAJIMA HISAKAZU
Abstract: An optical ferrule including a non-metallic sleeve 11 formed with a through bore having a small bore portion 14 and a large bore portion 1. A bare fiber 13 and a coating 15 of an optical fiber 12 are adhesively fixed in the small bore portion and the large bore portion, respectively. The large bore portion 16 has at least one groove 17 formed in the inner surface thereof, the optical fiber has a rough surface portion 20 formed in the coating in at least a portion opposing to the groove, a glass tube 18 is inserted in the large bore portion between the small bore portion and the end face of the coating of the optical fiber and has an outer diameter larger than the inner diameter of the small bore portion and an inner diameter adapted for inserting of the bare fiber, and an adhesive 21 is filled between the components including the inner surface of the sleeve. Thereby, an optical ferrule having superior reliability and durability and capable of long use in stable condition is provided.
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公开(公告)号：CA2063187A1
公开(公告)日：1992-09-19
申请号：CA2063187
申请日：1992-03-17
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , OKAJIMA HISAKAZU
Abstract: An optical ferrule including a non-metallic sleeve 11 formed with a through bore having a small bore portion 14 and a large bore portion 1. A bare fiber 13 and a coating 15 of an optical fiber 12 are adhesively fixed in the small bore portion and the large bore portion, respectively. The large bore portion 16 has at least one groove 17 formed in the inner surface thereof, the optical fiber has a rough surface portion 20 formed in the coating in at least a portion opposing to the groove, a glass tube 18 is inserted in the large bore portion between the small bore portion and the end face of the coating of the optical fiber and has an outer diameter larger than the inner diameter of the small bore portion and an inner diameter adapted for inserting of the bare fiber, and an adhesive 21 is filled between the components including the inner surface of the sleeve. Thereby, an optical ferrule having superior reliability and durability and capable of long use in stable condition is provided.
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公开(公告)号：JPH08262089A
公开(公告)日：1996-10-11
申请号：JP6546795
申请日：1995-03-24
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , KOBAYASHI TOSHIAKI , YASUMASU YASUHIRO , MIURA NORIO
Abstract: PURPOSE: To provide a method for inspecting a wiring automating slave station which can automatically accurately inspect without influence of a temperature without necessity of a large-scale inspecting apparatus. CONSTITUTION: A wiring automating slave station 1 to be inspected is connected to a magnetic field photosensor 4 set in a cut core 3 having a winding 6, and a current flows from a current generator 7 to the winding 6 according to a control signal from a discriminating personal computer 9. Thus, a magnetic field corresponding to the current necessary to inspect is generated in the core 3, the output of the station 1 at that time is fetched to the computer 9 together with the current value of the winding 6, and the propriety of the station 1 is inspected. It is preferable to inspect in the state that the core 3 and the sensor 4 are contained in a constant-temperature bath 2.
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Patent Agency Ranking
公开(公告)号：JPH0652747A
公开(公告)日：1994-02-25
申请号：JP12474791
申请日：1991-04-26
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , TSUGE KENJI , SHIMIZU MIKIO , KAMEJIMA YOSHIAKI
IPC: G01R15/24 , H01H1/00 , H02B13/065 , G01R15/07
Abstract: PURPOSE:To provide a switch containing a current and voltage detecting device and a zero-phase current transformer which are hardly affected by external induction and can perform measurement with high accuracy. CONSTITUTION:A current and voltage detecting device 15 and a current detecting device 16 for zero phase current are provided in a case 1. A current sensor head and a voltage sensor head converting electric signals into light signals are respectively provided in the current and voltage detecting device 15, which transmits the light signals to be detected to a measuring portion through optical fibers 35, 42. The voltage sensor head converting the electric signal into the light signal is provided in the current detecting device 16 for the zero-phase current, which transmits the light signal to be detected to a measuring portion through optical fiber 56. Thereby it is possible to measure voltage/current accurately allowing no effect of external induction.
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公开(公告)号：JPH0650994A
公开(公告)日：1994-02-25
申请号：JP12474691
申请日：1991-04-26
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , TSUGE KENJI , SHIMIZU MIKIO , KAMEJIMA YOSHIAKI
Abstract: PURPOSE:To obtain a zero phase current detector of a switch gear free from external induction. CONSTITUTION:A ring-shaped zero phase current transformer 24 is provided surrounding a lead-in bushing 5 connected to distribution wires of a three-phase AC in a package. A voltage sensor head 26 is arranged in an internal area of the ring-shaped zero current transformer 24 to detect a zero phase current as light signal. As a result, the zero phase current can be detected as light signal with the voltage sensor head 26 without receiving external induction. The zero phase current detected is transmitted to a measuring section with an optical fiber 34. This enables the transmission of the zero phase current to the measuring section free from the external induction thereby enabling accurate detection.
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公开(公告)号：JPH0643190A
公开(公告)日：1994-02-18
申请号：JP12474591
申请日：1991-04-26
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , TSUGE KENJI , SHIMIZU MIKIO , KAMEJIMA YOSHIAKI
Abstract: PURPOSE:To simplify the structure of the voltage detector of a section switch and to facilitate the attachment of the detector. CONSTITUTION:A unit case 23 has a receiving groove 30 formed from an inside wall 28 and an outside wall 29. A current measuring core 24, a voltage measuring first electrode plate 25 on a charge side and a second electrode plate 26 on an earth side are integrally received in the receiving groove. A magnetic field sensor head 33 and a voltage sensor head 37 are attached to a bottom plate part 31. Since the members necessary for a voltage detector 13 are attached to the unit case 23, the unit case 23 may be attached when the voltage detector 13 is attached to the case.
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公开(公告)号：JPH04106480A
公开(公告)日：1992-04-08
申请号：JP22599290
申请日：1990-08-27
Applicant: NGK INSULATORS LTD
Inventor： MATSUURA MASAMI , TSUGE KENJI , EMORI MAMORU , KAMEJIMA YOSHIAKI
IPC: G01R15/24
Abstract: PURPOSE:To enable the stabilization of the outputting of a detection signal by pulling a signal line of a sensor head out of one end of an insulated container while being wrapped in an elastic insulation layer to prevent dielectric breakdown. CONSTITUTION:Signal lines 11 and 12 are wrapped in an elastic insulation layer 20 excelling in adhesion on the pulling side in an insulated container 2 and an interface part of the insulation layer 20 is made adhesive as well as elastic to reduce a stress of the interface part. This can prevent possibility of a dielectric breakdown in the insulated container 2 otherwise caused by electric piercing and a partial discharging at a void part. This also eases the transmission of vibrations and impacts deep inside from outside to prevent the peeling of a connection of the signal lines 11 and 12 off sensor heads 13 and 9. Thus, it is possible to prevent probable instability in the outputting of a detection signal otherwise associated with the peeling of the connection of the signal lines 11 and 12.
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公开(公告)号：JPS6347723A
公开(公告)日：1988-02-29
申请号：JP19151286
申请日：1986-08-15
Applicant: NGK INSULATORS LTD
Inventor： KOZUKA YOSHINARI , TOYODA SHUHEI , MATSUZAWA MOTOICHIRO , MASE SHUNZO , MATSUURA MASAMI
Abstract: PURPOSE:To obtain a photosensor having a small temp. coefft. and decreased deterioration with age by determining the coefft. of thermal expansion of a light transparent body and the coefft. of thermal expansion of an optical element so as to satisfy the specific relation. CONSTITUTION:The 3rd light transparent body adhered to the 1st and the adjacent 2nd optical elements inserted between the 1st optical element and the 2nd optical element of the photosensor consisting of an optical element complex using an electrooptic effect or magneto-optical effect. The coefft. of thermal expansion alpha3 of the light transparent bodies, the coefft. of thermal expansion alpha1 of the 1st optical element and the coefft. of thermal expansion alpha2 of the 2nd optical element satisfy ¦alpha1-alpha3¦
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