Sumitomo Electric Industries, Limited

Fuji Xerox Co., Ltd.

Sumitomo Wiring Systems, Limited

Fujifilm Business Innovation Corp.

Autonetworks Technologies, Limited

Sumitomo Electric Device Innovations, Inc.

Satoshi Yoshikawa

Hiromi Kurashima

Takashi Yamazaki

Yasushi Fujimura

Seiji Iino

Kazunori Kurokawa

Hidemi Sone

Shigeo Hayashi

Manabu Shiozaki

Toshio Mizue

Hisao Komazawa

Moriyasu Ichino

Kimihiko Isobe

Katsuyuki Tsuneishi

Hiroyuki Yabe

Iwao Okazaki

Yoshinobu Nakamura

Yuuichi Kitajima

Makoto Aoki

Hirokazu Sasaki

This seal structure of a wire drawing furnace for an optical fiber is for sealing a gap between an upper end opening of the wire drawing furnace for an optical fiber and a glass base material for an optical fiber inserted from the upper end opening into a furnace core tube. This seal structure has: a plurality of blade members circumferentially arranged in contact with a circumferential side surface of the glass base material for an optical fiber; a guide member, provided around the plurality of blade members, for allowing the plurality of blade members to slide linearly toward the circumferential side surface of the glass base material for an optical fiber; and a pushing/pulling action mechanism that causes the blade members to move in the radial direction of the glass base material for an optical fiber. The center of gravity of the plurality of blade members is located behind the tip surface of the guide member.

Seal structure of wire drawing furnace for optical fiber, and production method for optical fiber

A furnace gas supply apparatus configured to supply gas into a drawing furnace, includes: a first flow channel introducing the gas from a predetermined first gas inlet to flow the gas from a predetermined first gas outlet toward a gas storage portion, and a second flow channel introducing the gas stored in the gas storage portion from a predetermined second gas inlet to flow the gas from a predetermined second gas outlet toward a furnace core tube of the drawing furnace, in which the gas storage portion is provided between the first gas outlet and the second gas inlet, and in which an opening position of the second gas inlet is provided at a position different from an opening position of the first gas outlet.

Furnace gas feeding device, optical fiber production device, and optical fiber production method

An optical fiber drawing method where a glass base material passes through an opening provided in a drawing furnace from the material side and drawing is performed by suspending and descending the material into the drawing furnace while being sealed by a sealing mechanism provided in the vicinity of the opening, in which a first portion of the sealing mechanism seals a gap between an outer peripheral surface of the material and an inner surface of the opening when drawing starts and a tapered portion of the material starts passing through the first portion, and a second portion is disposed above the first portion before sealing by the first portion becomes ineffective, and then conduction between inside and outside of the drawing furnace is carried out to prevent fluctuation of pressure inside the furnace immediately after disposing the second portion and the conduction is interrupted when the material further descends.

Optical fiber drawing method and drawing apparatus

An information processing apparatus includes: a notification unit that performs notification to a first person when the first person differs from a second person and refrains from performing the notification when the first person is the same as the second person, wherein the first person is one who instructs execution of an application for transmitting data to a preset transmission destination, the second person is one who has changed information on the transmission destination included in an address book, and the notification indicates that the information on the transmission destination has been changed.

Information processing apparatus and non-transitory computer readable medium

A seal structure for an optical fiber drawing furnace is for plugging a gap between an upper end opening of the fiber furnace, and an optical fiber glass preform wherein a seed rod and a taper portion are present in an upper portion thereof. The seal structure comprises a first cap member engaging the seed rod of the glass preform; a second cap member covering the taper portion of the glass preform and the first cap member; a spacer member disposed between the first and second cap member, supporting the second cap member, adjusting, via a positional adjustment structure, the height position of the second cap member in the axial direction, and causing the lower extremity of the second cap member to be at a position close to the taper portion; and a seal member which seals between the upper end opening and the glass preform and/or second cap member.

Seal structure for optical fiber drawing furnace and optical fiber production method

A suspension structure of the present embodiment conveys an optical fiber preform into a drawing furnace. A suspension portion formed in a depressed shape or a projected shape or as a hole is formed in a dummy rod connected on an upper side of the optical fiber preform conveyed into the drawing furnace. The suspension structure includes: a joining mechanism configured to cover at least a part of circumference of the dummy rod and include an arm that extends on both sides in a direction perpendicular to a drawing direction and a retention portion that engages with the suspension portion and retains the optical fiber preform; and an engagement mechanism including a gripping portion with which the arm engages and which hangs the optical fiber preform.

Suspension structure and suspension method for optical fiber preform and manufacturing method and suspension method for optical fiber

A data processing apparatus includes a first limit unit, an acquisition unit, a registration unit, and a second limit unit. If user authentication has been performed for a user by using acquired account information, the first limit unit limits a service to be provided, in accordance with a use limit that is preset for each of authenticated users. If the user authentication has not been performed for the user, the acquisition unit acquires biological information of the user. The registration unit registers the acquired biological information and a use status of the service in association with each other in a database. The second limit unit limits the service to be provided, in accordance with the use status corresponding to the acquired biological information.

Data processing apparatus, system, and method for providing a service with a use limit that is set based on acquired biological information

A wiring member comprises a first module having a first communication unit, second modules having respective second communication units, a cable module having cables which connect the first communication unit to the second communication units, and a branching module which is disposed at a prescribed position in the cable module. The branching module has a first cable insertion portion in which the cables are inserted in bundled form and a second cable insertion portion in which the cables are inserted separately, and the branching module is fixed to at least one of the cables in a first state and is made movable relative to the cables in a second state. One end portions of the cables are connected to the first module in bundled form and the other end portions of the cables are connected to the respective second modules separately.

Wiring member

A printer control device uses a rasterized data generation unit that generates rasterized data for a first printer, and a setting information obtainment unit that obtains setting information related to drawing of a mark image for a second printer in the generated rasterized data, so that a mark drawing unit draws the mark image for the second printer in the generated rasterized data on the basis of the setting information, and a printing control unit allows the second printer to perform a printing process using the rasterized data generated for the first printer in which the mark image for the second printer is drawn.

Printer control device and non-transitory computer readable medium

An optical device includes an optical base, an electric board, a fiber tray, and the like, which are placed in an enclosure. In particular, the electric board is made smaller than the optical base, and the fiber tray is placed in a space defined between an outer peripheral surface of the electric board and an inner side surface of the enclosure. In other word, the optical device uses a gap between the electric board and the enclosure not as a dead space but as a space for routing a remaining portion of the optical fiber. Thus, the optical device can improve space efficiency and thereby can reduce its size.

Optical device, method of manufacturing optical device, and optical device assembly method

Plural conductive plates extend from a transparent containing unit containing the photoelectric conversion device, plural electrical circuit components are connected to the conductive plate, and the conductive plate extending from the transparent containing unit is accommodated in a housing while the conductive plate is bent. At that time, the conductive plate extending from the transparent containing unit is coupled at two portions in an extending direction by coupled-fixing members made of non-conductive synthetic resin, the electrical circuit components are mounted between the coupled-fixing members and the conductive plate is bent at portions outside these two coupled-fixing members. In the case that the conductive plate must be cut to generate a floating point portion, a floating-point fixing member is provided for coupling and fixing the floating point portion to an adjacent conductive plate.

Optical communication module

In a wavelength selective switch, a holding member is used to rotate one end of optical fibers and a collimator array around a rotation axis to thereby change an incident angle of collimated light with respect to incident surfaces of a beam expander optical system. When the incident angle of the collimated light on the beam expander optical system is changed, an amount of variation in an emission angle of light from the beam expander optical system is not proportional (inversely proportional) to the magnification of the beam expander optical system. Thus, this wavelength selective switch can easily fine-tune the incident position (beam position) of light with respect to each reflecting surface of a MEMS mirror by rotating the holding member.

Optical unit and wavelength selective switch

An optical transceiver that provides an inner metal cover in addition to a metal cover and a frame is disclosed. The inner cover includes a ceiling, a front skirt bent downward at a front edge of the ceiling, sides bent downward at both side edges of the ceiling, and a pair of arms extending rearward from respective side ends of the ceiling. The ceiling makes an obtuse angle with respect to the front skirt when the arms are not assembled with the frame, and shapes in convex protruding outward when the metal cover is not assembled with frame and. Assembling the inner cover and the metal cover with the frame, the inner cover comes in securely contact with the metal cover.

Optical transceiver having inner metal cover

An SFP transceiver with two subassemblies each having an optical coupling member with a polygonal cross section is disclosed. The polygonal cross section has a flat surface facing the flat surface of the other subassembly. Between flat surfaces is put with a metal partition plate that comes in contact with a metal frame and a metal cover of the transceiver. Two sub-assemblies are electrically shielded by the partition plate, and the polygonal cross section of the subassembly makes the total width of the two assemblies added with the thickness of the partition plate minimum.

Optical transceiver with partition plate between TOSA and ROSA

A pluggable optical transceiver with an enhance EMI tolerance is disclosed. The optical transceiver provides an electrically conductive receptacle, a ground member made of metal sheet, and a cover also made of metal sheet. The ground member is assembled so as to surround a periphery of the receptacle. The cover provides a first bridge in a front portion thereof, while, the ground member provides fingers and a second bridge connecting the fingers in the tip portion. Fully setting the optical transceiver in the cage, the finger comes in contact with the inside of the cage and the first bridge comes in securely contact with the second bridge so as to shield a gap between the transceiver and the cage.

Growing community of inventors

Yokohama, Japan

Satoshi Yoshikawa