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41. 发明专利

JPS6384804A THERMAL EXPANSION ABSORPTION CHUCK 失效
公开(公告)号：JPS6384804A
公开(公告)日：1988-04-15
申请号：JP22621386
申请日：1986-09-26
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： YOSHIDA MASANOBU , MIZUNO SHUNICHI , SHIOMI AKIO
IPC分类号： B23B31/20 , C03B37/018
摘要： PURPOSE:To prevent the change of a chucking condition due to thermal expansion by providing a spring for energizing a chucking claw to converge toward the inner side of a chuck for holding a glass rod and the like via the shift of a collet having a plurality of chucking claws in an axial direction. CONSTITUTION:Even when a normal temperature condition has changed to a high temperature condition and the whole of a chucked workpiece, a chuck proper 11, a collet 12 and the like has given thermal expansion, thereby forming a gap between the tapered surface 15 of a chucking claw 14 and the chuck proper 11, the chucking claw 14 is pushed upward with a thermal expansion absorption spring 16 and, therefore, a chucking condition is properly maintained. Thereafter, in transition from high temperature to low temperature, thermal expansion takes place. As a removable spring 17 on the rear end of the collet 12 tends to lower the collet 12, however, the force of the thermal expansion absorption spring 16 is released by rotating and loosening a rotary member 13. And the collet 12 is pushed downward and the chucking claw 14 expands toward the outside, thereby preventing the occurrence of an excessive chucking force.

42. 发明专利

JPS6330338A METHOD FOR DEHYDRATING AND SINTERING POROUS OPTICAL FIBER BASE MATERIAL 失效
公开(公告)号：JPS6330338A
公开(公告)日：1988-02-09
申请号：JP16991086
申请日：1986-07-21
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： MIZUNO SHUNICHI , TSUCHIYA ICHIRO , ISHIGURO YOICHI , DANZUKA TOSHIO
IPC分类号： G02B6/00 , C03B37/014
摘要： PURPOSE:To easily dehydrate and sinter a long-sized base material by reciprocating the base material to uniformly heat the material, and leaving a furnace core tube alone long-sized when the porous optical fiber base material is longer than the soaking zone in the furnace core tube. CONSTITUTION:The soaking zone Z is heated 20 and kept at a desired temp., the porous optical fiber base material 16 is fixed by a rotary chuck 18 through a seed rod 17, and then the base material 16 is lowered until its lower end reaches a site directly above the zone Z. Under such conditions, the temp. of the zone Z is then increased to a specified temp., and the gaseous mixture of He and Cl2, for example, is supplied 21 and discharged 22. The base material 16 is repeatedly reciprocated under such conditions. In such case, when the material is lowered to the lowermost position of a zone Z, the upper end of the base material 16 is positioned below the upper end of the zone Z. Meanwhile, when the material 16 is raised to the uppermost position, the lower end of the base material 16 is positioned above the lower end of the zone Z. Accordingly, the reciprocating stroke quantity of the base material 16 is set at more than a value obtained by subtracting the length of the zone Z from the length of the base material 16. Consequently, a high-quality base material 16 with much less air bubbles than in case of the conventional method can be obtained.

43. 发明专利

JPH05196832A OPTICAL FIBER ARRANGING MEMBER AND CONNECTOR COUPLER 失效
公开(公告)号：JPH05196832A
公开(公告)日：1993-08-06
申请号：JP850092
申请日：1992-01-21
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： MIZUNO SHUNICHI , SAITO KAZUTO , WATANABE TSUTOMU , OZAWA KAZUMASA
IPC分类号： G01M11/00 , G02B6/00 , G02B6/24 , G02B6/36
摘要： PURPOSE:To provide the optical fiber arranging member which can surely optically couple one ray path arranged in the optical fiber arranging member and a master side connector even when the optical fiber arranging member is deformed by thermal expansion and the optical connector coupler constituted by utilizing the optical fiber arranging member. CONSTITUTION:The optical fiber arranging member 10a has an arranging member body 12 two-dimensionally arranged with the end faces 11a of many optical fibers constituting a ray network and has scales 13a, 14a in x, y directions intersecting orthogonally with each other in order to specify the positions of the respective optical fibers 11 arranged in the arranging member body 12. These scales 13a, 14a are formed on scale members 13, 14 having the same coefft. of thermal expansion as the coefft. of thermal expansion of the arranging member body 12.

44. 发明专利

JPH0269924A ADHERING METHOD FOR BOARD 失效
公开(公告)号：JPH0269924A
公开(公告)日：1990-03-08
申请号：JP22196788
申请日：1988-09-05
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： MIZUNO SHUNICHI
IPC分类号： B29C65/78 , C09J5/00 , H01L21/02 , H01L21/20
摘要： PURPOSE:To improve the accuracy of applying boards by individually imaging positioned first and second boards to obtain image signals, aligning the boards, and applying them. CONSTITUTION:A board 7 is positioned at a board applying position by a positioning unit 10, the focus of a single eye lens double objective lens microscope 13 is aligned to the positioned board 7, and a pattern on the board 7 is imaged by a CCD camera 15. The obtained image and a binarized image are combined by an image processor 17 to project it in a monitor 18. The board 7 is so positioned as regulated in its attitude that two patterns are disposed to have a predetermined relationship on the screen of the monitor 18. Then, an annular vacuum chuck 3 retreated to a board setting position is positioned again to the applying position, the board 7 is pressed to a board 1 by a pressing unit 11, thereby bringing the board 1 into close contact with the board 7 to be applied.

45. 发明专利

JPH01183432A HEATING OF QUARTZ GLASS TUBE 失效
公开(公告)号：JPH01183432A
公开(公告)日：1989-07-21
申请号：JP700888
申请日：1988-01-18
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： TANAKA GOTARO , SUGANUMA HIROSHI , URANO AKIRA , TAKAGI MASAHIRO , MIZUNO SHUNICHI
IPC分类号： C03B20/00 , C03B23/043 , C03B37/018 , H05H1/46
摘要： PURPOSE:To sufficiently heat a quartz tube and to rapidly clean the tube in heating by using microwave, by utilizing heat generation of a plasma forming gas as a preheating means and preheating the tube in a microwave impressed part. CONSTITUTION:A quartz glass tube 1 to be heated is inserted into a microwave irradiating part 2 and for example, a plasma forming gas 3 such as Ar is introduced into the glass tube 1 under normal pressure. In the operation, when an electrically conductive rod having high heat resistance made of C or W is separately inserted into the microwave irradiating part in the tube 1, microwave irradiation is started and output is increased, electric discharge is generated at the tip of the electrically conductive rod, the gas 3 is ignited to produce heat plasma 4. The tube 1 is heated by the heat plasma 4 for a while and preheated to a given temperature. Then when feed of the gas 3 is stopped, the microwave can be immediately absorbed in the tube 1 and the tube 1 can be heated.

46. 发明专利

JPS63201025A PRODUCTION OF HIGH-PURITY TRANSPARENT GLASS 失效
公开(公告)号：JPS63201025A
公开(公告)日：1988-08-19
申请号：JP3245987
申请日：1987-02-17
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： ISHIGURO YOICHI , URANO AKIRA , KYODO TSUNEHISA , TSUCHIYA ICHIRO , MIZUNO SHUNICHI
IPC分类号： G02B6/00 , C03B8/00 , C03B20/00 , C03B37/014
摘要： PURPOSE:To produce the title high-purity dense glass without any residual bubble and appropriate for optical fiber glass by holding a porous body in a furnace core tube provided in a pressure vessel, and heating the body while keeping the whole inside of the vacuum vessel at a vacuum. CONSTITUTION:The porous body 8 gathering fine glass powder, is held in the furnace core tube 2 in the pressure vessel 1, the whole pressure vessel 1 is evacuated by a vacuum pump 7, and the body is heated to

47. 发明专利

JP2002362936A APPARATUS AND METHOD OF CUTTING OPTICAL FIBER 失效
公开(公告)号：JP2002362936A
公开(公告)日：2002-12-18
申请号：JP2001177043
申请日：2001-06-12
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： HATTORI KAZUNARI , MIZUNO SHUNICHI , KINOSHITA ISAO
IPC分类号： G02B6/255 , C03B37/16 , G02B6/00
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and method of cutting a optical fiber by which fiber cut is precisely performed without necessitating the adjustment of pulling tension or cleaving depth with a reduced wear of a cleaving blade and without requiring skill. SOLUTION: The optical fiber cutting apparatus for cutting the glass optical fiber into a prescribed length by removing a cover of the end part of a single core optical fiber or a coated optical fiber 10, applying pulling tension to the exposed glass optical fiber 10a and injuring the glass optical fiber 10a with the cleaving blade 30 is provided with a 1st clamp part 12 for clamping the covered part of the single core optical fiber or the coated optical fiber 10, in which the cover of the end part is removed, a 2nd clamp part 13 for clamping the exposed glass optical fiber part 10a and a cutter structural part 14 for sending the cleaving blade 30 formed from a rotatable circular rotary edge vertically toward the axis of the glass fiber part 10a while rotating.

48. 发明专利

JP2002328253A METHOD FOR FUSION SPLICING CONSTANT POLARIZATION OPTICAL FIBERS 失效
公开(公告)号：JP2002328253A
公开(公告)日：2002-11-15
申请号：JP2001129569
申请日：2001-04-26
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： OKI EISUKE , ITO KENSUKE , MIZUNO SHUNICHI
IPC分类号： G02B6/024 , G02B6/10 , G02B6/255 , G02B6/17
摘要： PROBLEM TO BE SOLVED: To provide an automatable fusion splicing method for constant polarization optical fibers by which the polarization plane of an optical fiber is surely detected from the luminance distribution of a picked up image. SOLUTION: The method is for a fusion splicing of a pair of optical fibers 20a and 20b which maintain polarization plane by arranging a stress-imparted part around a core part. The butted part of a pair of the optical fibers 20a and 20b is mounted on a fusion splicing device 21, the butted part is positioned by image observations 23x and 23y from two different side directions of the optical fibers, the distance between the bright end of the luminance distribution of the optical fiber which is obtained by at least one picked up image, and the luminance peak which is closest to the bright end is derived on both sides of the bright end part, an adjustment is made so that the sum of the distance becomes minimum, the stress-imparted parts are made coincident, and fusion spliced.

49. 发明专利

JPH05249387A 失效
公开(公告)号：JPH05249387A
公开(公告)日：1993-09-28
申请号：JP4574292
申请日：1992-03-03
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： WATANABE TSUTOMU , MIZUNO SHUNICHI , SAITO KAZUTO , OZAWA KAZUMASA
IPC分类号： G02B6/24 , G02B26/08
摘要： PURPOSE:To provide an optical switch capable of accurately performing the alignment of a master side connector in a non-contact system with respect to a light transmission line such as an optical fiber, etc., arrayed in a connector unit. CONSTITUTION:The optical switch 1 is provided with the connector unit 3 where many ends of optical fibers are arrayed, the master side connector 4 which is arranged facing to the connector unit 3 and which is optically coupled with one optical fiber 2 arrayed in the connector unit 3, a fine adjustable stage 5 for supporting the master side connector 4 and finely adjusting the connector 4 in (x), (y) and (z) axial directions and a rough adjustable stage 9 for supporting the fine adjustable stage 5 and roughly adjusting the stage 5 in the (x), (y) and (z) axial directions.

50. 发明专利

JPS62187128A TREATMENT OF POROUS OPTICAL FIBER BASE MATERIAL 失效
公开(公告)号：JPS62187128A
公开(公告)日：1987-08-15
申请号：JP2779086
申请日：1986-02-13
申请人： SUMITOMO ELECTRIC INDUSTRIES
发明人： MIZUNO SHUNICHI , TSUCHIYA ICHIRO , ISHIGURO YOICHI , DANZUKA TOSHIO
IPC分类号： G02B6/00 , C03B37/014
摘要： PURPOSE:To finish the titled treatment for a short time without elongating a reactor core pipe and a furnace length by reciprocating a porous optical fiber base material along a soaking zone and presetting the retention time of both end parts of the base material nearly equally. CONSTITUTION:A porous optical fiber base material 5 is fitted to a seed rod 8. A top cover 7 is covered on a reactor core pipe 2 and a rotary chuck 9 is raisen. When the lower end of the base material 5 reaches the lower end of a soaking zone Z, the rotary chuck 9 is reversely descended and it is repeatedly reciprocated so that the whole length of the base material 5 is not deviated from the soaking zone Z and thereby the treatment is performed. The retention time of both end parts of the base material 5 is preset nearly equally. Still further the speed of reciprocating vertical transfer is preferably selected so that the base material reciprocates more speedy than the continuous time of each treating process. By this method, the large type long-sized porous optical fiber base material 5 can be treated for a short time.

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