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1. 发明专利

JPS5636617A OPTICAL ADAPTER 失效
公开(公告)号：JPS5636617A
公开(公告)日：1981-04-09
申请号：JP11254579
申请日：1979-09-03
申请人： NIPPON ELECTRIC CO , NIPPON TELEGRAPH & TELEPHONE
发明人： SHIGA TOMIJI , ATOKAWA AKIO , NAWATA KIYOSHI , SUZUKI NOBUO
IPC分类号： G02B6/38
摘要： PURPOSE:To maintain the fitting accuracy between connector plugs and hermetically seal the inside and outside of a hermetic case in an optical adapter for optical fiber communication apparatus by providing an optical guide relaying member in the intermediate part of a connector plug guide hole. CONSTITUTION:A guide hole 13 having an inside diameter nearly equal to the outside diameter of a connector plug 2 is provided to the adapters 6, 7 mounted to a hermetic case 5. An optical guide relaying member 8 is provided to the intermediate part thereof, and an optical fiber 1 is connected to the optical adapter fixed by means of a binder 14 in an annular groove 11 by an adhesive agent or the like. The connector plug 2 provided with a pressing spring 3 and a cap nut 4 is fitted thereto. Hence, the connection is made possible in a perfectly hermetically sealed state.

2. 发明专利

JPS60197948A MOVABLE MECHANISM OF OPTICAL HEAD 失效
公开(公告)号：JPS60197948A
公开(公告)日：1985-10-07
申请号：JP5465184
申请日：1984-03-22
申请人： NIPPON ELECTRIC CO
发明人： SHIGA TOMIJI
IPC分类号： G11B7/09
摘要： PURPOSE:To improve a response characteristic by installing a lens barrel part containing an objective lens to a movable end of a plate-shaped elastic body of inverted pendulum, making a plate surface part of this elastic body oppose each other in the moving direction, and scattering and placing plural pieces in a shape of a train in the vertical and horizontal directions. CONSTITUTION:A lens barrel 15 containing an objective lens 3 is installed in a state of inverted pendulum to a base body 17 through four plate-shaped elastic bodies 16a-16d forming a pair at a position opposed to an optical axis X of this lens 3. The plate-shaped elastic bodies 16a-16d are very thin, and for instance, are formed by a metallic piece of about 20mu thick. The plate surface part of said elastic bodies 16a-16d is turned in the tracking direction (X direction) in which the lens barrel 15 moves, and also plural pieces (two pieces in the executing example) of plate-shaped elastic bodies 16a, 16b are placed symmetrically agains the X-Z plane, and in the direction orthogonal to the tracking direction against these elastic bodies, other elastic bodies 16c, 16d are arranged in the same direction and also symmetrically to the X-Z plane.

3. 发明专利

JPS5369652A CORE ECCENTRICITY MEASURING APPARATUS FOR OPTICA FIBRE CABLE IN END METALSFOR FIXING THE CABLE 失效
公开(公告)号：JPS5369652A
公开(公告)日：1978-06-21
申请号：JP14531076
申请日：1976-12-02
申请人： NIPPON ELECTRIC CO
发明人： ATOKAWA AKIO , KUROJI NORIO , SHIGA TOMIJI
IPC分类号： G01M11/00 , G02B6/00
摘要： PURPOSE:To achieve highly accurate measurement of displacement by means of a circumferential displacement detector, by accomplishing centering between the center of core and a rotatable shaft while observing, by the use of core position detecting means, end portions of an optical fibre which is inserted into said rotatable shaft and fixed in place by positioning jig means.

4. 发明专利

JPS6250770B2 失效
公开(公告)号：JPS6250770B2
公开(公告)日：1987-10-27
申请号：JP14531076
申请日：1976-12-02
申请人： NIPPON ELECTRIC CO
发明人： ATOKAWA AKIO , KUROJI NORIO , SHIGA TOMIJI
IPC分类号： G01M11/00 , G02B6/00

5. 发明专利

JPS5576317A TERMINAL STRUCTURE OF MULTICORE OPTICAL FIBER 失效
公开(公告)号：JPS5576317A
公开(公告)日：1980-06-09
申请号：JP15088978
申请日：1978-12-05
申请人： NIPPON ELECTRIC CO
发明人： SHIGA TOMIJI , ATOKAWA AKIO , MORIMOTO YOSHITAKA
IPC分类号： G02B6/40 , G02B6/38
摘要： PURPOSE:To provide the terminal structure of the multicore optical fiber connector best suited for multicore optical fiber connectors by using precision cylindrical members and changing the shape of the holding member. CONSTITUTION:The inside hole 5 of a cylindrical member 4 is finished to a diameter slightly larger than that of an optical fiber strand and is pierced in the position concentrical to the outside circumference of the cylinder. One end of the inside hole is applied with conical working to funnel form. The cylindrical members 4 thus made are assembled by as much as the number of optical fiber strands. The cylindrical members 4 assembled on a flat plate holding member 6 are placed side by side to let the cylindrical members 4 make close contact with each other and make close contact onto the flat plate holding member 6. These are then integrated by other mechanical means. Hence, these may be readily increased or decreased irrespective of the number of the optical fiber strands and the spacings between the optical fiber strands may be changed as desired.

6. 发明专利

JPS6159870B2 失效
公开(公告)号：JPS6159870B2
公开(公告)日：1986-12-18
申请号：JP2271679
申请日：1979-02-28
申请人： NIPPON ELECTRIC CO
发明人： SHIGA TOMIJI , SUGAWARA TAMOTSU , ATOKAWA AKIO , MORIMOTO YOSHITAKA
IPC分类号： B24B19/00 , G02B6/00 , G02B6/38

7. 发明专利

JPS60258740A OPTICAL HEAD 失效
公开(公告)号：JPS60258740A
公开(公告)日：1985-12-20
申请号：JP11487284
申请日：1984-06-05
申请人： NIPPON ELECTRIC CO
发明人： ISHIKAWA TSUTOMU , SHIGA TOMIJI
IPC分类号： G02B7/28 , G11B7/09 , G11B7/12
摘要： PURPOSE:To eliminate the need for a cylindrical lens by forming a symmetrical axis vertical to an optical axis including the center of reflected light of the same pattern as that of a parallel light to a focus detecting means and forming a photoelectric converting region symmetrical to the axis with inversion mutually to attain ease of position adjustment of a reflected light detector. CONSTITUTION:The photoelectric converting regions 222a, 222b and a light dead band region 230 are formed as axial inversion symmetry while an effective diameter 220 of reflected light 106 on a track 209, that is, the vicinity of the center line of a circle of the same pattern as that of the parallel light 204 is used as a symmetrical axis 224. Thus, the irradiated area of the reflected light 106 on the photoelectric conversion regions 222a, 222b at the focusing position is equal, output signals 226, 227 are equal and an error signal 229 is zero. Thus, the direction of a condenser lens 101 to be moved is decided depending on the polarity of the error signal 229 and the distance to be moved is decided, then the position of the collected light spot 102 is focused always.

8. 发明专利

JPS5674210A OPTICAL FIBER CONNECTOR 失效
公开(公告)号：JPS5674210A
公开(公告)日：1981-06-19
申请号：JP15117479
申请日：1979-11-21
申请人： NIPPON ELECTRIC CO
发明人： MORIMOTO YOSHITAKA , SHIGA TOMIJI , ATOKAWA AKIO
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To prevent break of strands, by inserting a cylindrical material having the hole diameter slightly larger than the strand to the tip of the optical fiber strand which passes in the tube coated with a tension resistant material and a housing tube and by fitting this cord to the terminal material after fixing it by a fixer to constitute a connector. CONSTITUTION:Cylindrical material 7 which has the hole of a diameter slightly larger than optical fiber strand 1 and has the outside diameter equal to that of tube 2 is inserted to the tip of optical fiber strand 1 which passes in tube 2 coated with tension resistant material 3 and housing tube 4, and cylindrical material 7 is fixed by fixer 8. This cord is fitted to terminal material 5 to constitute a connector. As a result, break of strand 1 can be prevented.

9. 发明专利

JPS5576316A CONNECTION STRUCTURE OF OPTICAL FIBER 失效
公开(公告)号：JPS5576316A
公开(公告)日：1980-06-09
申请号：JP15088878
申请日：1978-12-05
申请人： NIPPON ELECTRIC CO
发明人： MORIMOTO YOSHITAKA , SHIGA TOMIJI
IPC分类号： G02B6/36 , G02B6/38
摘要： PURPOSE:To achieve the perfection of the butt connection of high accuracy with low cost by inserting and fitting a pair of plugs to which optical fibers are mounted and fixed, with the marshaling pins of a holding and fixing member as a guide. CONSTITUTION:A holding and fixing member 9 is provided with the marshaling pins 10 which fit into the recesses between the cylindrical members 12 or cylindrical columnar members which are adjoining with each other. With said marshaling pins 10 as a guide, a pair of plugs 8 in which optical fibers are mounted and fixed to the centers of the cylindrical members 7 are inserted into the holding and fixing member 9 and are butt-connected. Hence, the mutual positions of the plugs 8 are maintained by the pins 10 with good accuracy and giving any connection deviation to the butted optical fibers is obviated.

10. 发明专利

JPS6256489B2 失效
公开(公告)号：JPS6256489B2
公开(公告)日：1987-11-26
申请号：JP15117479
申请日：1979-11-21
申请人： NIPPON ELECTRIC CO
发明人： MORIMOTO YOSHITAKA , SHIGA TOMIJI , ATOKAWA AKIO
IPC分类号： G02B6/36 , G02B6/38

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