Abstract: The present invention relates to a flexible optical waveguide prepared by using a resin film for forming an optical waveguide for at least one of a lower cladding layer, a core layer and an upper cladding layer, wherein a ten point average roughness (Rz) on a surface of either one of the lower cladding layer and the upper cladding layer is 0.5 ?m or more and 10 ?m or less, a production process for the same and an optical module prepared by using the flexible optical waveguide. Provided are a flexible optical waveguide which is excellent in an adhesive property in compounding with an electric printed wiring board and turning a flexible optical waveguide into a multilayer, a production process for the same and an optical module prepared by using the flexible optical waveguide.

Abstract: Disclosed, among other features, is a flexible optical waveguide, having one resin film for forming a core layer and two resin films for forming a cladding layer. At least one of the resin films for forming the cladding layer is composed of a resin for forming a cladding layer and a base material film, and the base material film is arranged on an outer side of the cladding layer with respect to the core layer.

Abstract: An apparatus for communicating with a radio frequency identification (RFID) tag with a feeding device configured to feed a tag medium; an antenna for label production and an antenna for information acquisition that can respectively transmit or receive information to a RFID circuit element for label production or for information acquisition; an antenna switching control portion configured to switch so as to selectively transmit an inquiry signal to the RFID circuit element for label production or for information acquisition; and a mode processing portion configured to carry out processing corresponding to a communication processing mode or an information acquisition processing mode.

Abstract: According to a manufacturing method of an optical waveguide substrate including a core (12) and clads (11) (13) and provided with an optical axis conversion mirror (14) in the core and an alignment recess for the optical axis conversion mirror with respect to a light receiving and emitting element, the recess is obtained by obtaining an outline of the core by synthesizing at least an image captured by focusing a microscope (20) to a highest position (14a) of the core in an optical axis conversion mirror portion and an image captured by focusing the microscope to a lowest position (14d), and by determining a position of the alignment recess in reference to a center of gravity of the outline, and according to an optical waveguide substrate obtained by this manufacturing method, it becomes possible to provide an optical waveguide substrate in which the optical axis conversion mirror in the optical waveguide substrate and the light receiving and emitting element are aligned with respect to each other at an extrem

Abstract: The present invention provides a production process for a photoelectric composite substrate having an excellent productivity, comprising a step in which a sheet-like adhesive is stuck to an optical waveguide, a step in which a supporting base material of the above sheet-like adhesive is peeled off to prepare the optical waveguide provided with the adhesive, a step in which the above optical waveguide provided with the adhesive is adhered to an electric wiring board to prepare the electric wiring board provided with the optical waveguide and a step in which an optical path conversion mirror is formed in the optical waveguide of the above electric wiring board provided with the optical waveguide, a photoelectric composite substrate produced by using the above production process and a photoelectric composite module produced by using the above photoelectric composite substrate.

Abstract: The present invention provides an adhesive composition for an optical waveguide which comprises (a) an epoxy resin, (b) a curing agent and (c) a high molecular compound, in which a total light transmittance and a light transmittance in a wavelength of 700 to 1600 nm in a cured matter of the adhesive composition are 80% or more and in which a transparency is consistent with a heat resistance, an adhesive film for an optical waveguide prepared by forming the above adhesive composition into a film form, an adhesive sheet for an optical waveguide comprising the above adhesive composition and a supporting base material and an optical device produced by using them.

Abstract: Disclosed is an information processing device with lighting function that realizes reduced power consumption and cost reductions. The optical connecting member 17 flexibly connects between a light guide plate 14 of a displaying part side and a light guide plate 21 of a key operating part side, thereby guiding light emitted from a white light LED 13 of a displaying part side to key operating part side.

Abstract: (1) A method for producing a flexible optical waveguide, containing: a step of forming a first cladding layer; a step of forming a first core layer by laminating a resin film for forming a core layer on at least one end portion of the first cladding layer; a step of forming a second core layer by laminating a resin film for forming a core layer on an entire surface of the first core layer and the first cladding layer; a step of forming a core pattern by patterning the first and second core layers; and a step of embedding the core pattern by forming a second cladding layer on the core pattern and the first cladding layer, (2) a flexible optical waveguide containing a lower cladding layer, a core part and an upper cladding layer, the upper cladding layer having a width that is smaller than a width of the lower cladding layer at least in a bent portion, and is equal to or smaller than a width of the lower cladding layer in an end portion, and the lower cladding layer having a width in a bent portion that is equa

Abstract: The present invention discovers a new structural design technique which provides clearances between refractories 13 and fills the clearances with various types of refractories or refractory materials like in the past and, furthermore, uses another method to secure the heat expansion absorption function and provides a hearth structure of a rotary furnace hearth 1 able to prevent contact between the hearth structure and furnace side walls 3 and 4 caused by heat expansion of the refractories 13 and realize safe and smooth operation, that is, a hearth structure of a rotary furnace hearth laying two or more layers of refractories between side blocks 9 and 10 built at the inner circumferential end and outer circumferential end of a hearth refractory bed 7 of a rotary furnace hearth 1 and laying a powder or pellet hearth material 16 on its top surface, the hearth structure of a rotary furnace hearth 1 characterized by using refractories having a compressive strength of 0.1 to 5 MPa at 800 to 1500° C.

Abstract: The present invention relates to a flexible opto-electric combined circuit board in which an optical waveguide film provided with a core and a clad is bonded to a flexible electric wiring board, wherein a reinforcing material is provided to at least a part of an optical waveguide film side in a bent part and electronic devices prepared by using the above flexible opto-electric combined circuit board. Capable of being provided are an opto-electric combined circuit board in which an optical waveguide film is bonded to a flexible electric wiring board and in which braking and cracking are not generated by bending or folding back and electronic devices prepared by using the above opto-electric combined circuit board.

Abstract: The present invention relates to an optical waveguide comprising a lower cladding layer, a patternized core layer and an upper cladding layer, wherein a striking part for positioning is provided in one end part thereof, and an optical path turning mirror face is formed in a position different from a striking part-forming end part in the above core layer. Capable of being provided are an optical waveguide and an optoelectronic circuit board each having a simple configuration in which an optical device is not mounted on an optical wiring part or an optoelectronic composite wiring part and capable of connecting an optical device with a core of an optical waveguide in an optical wiring part (optical waveguide) or an optoelectronic composite wiring part (optoelectronic circuit board) at a high position accuracy and an optical module comprising an optical waveguide or an optoelectronic circuit board and a connector.

Abstract: A rotary furnace hearth wherein a hearth carriage carrying a hearth comprises a plurality of hearth carriages respectively having propulsion systems, wherein adjoining hearth carriages are coupled by coupling bolts and nuts via spacers interspaced in a single row in a horizontal plane, whereby even if the hearth carriages deform due to heat at the time of operation, they are structured to be able to freely deform without mutual constraint in the event of curved deformation, so the hearth carriages are maintained in individually stable states at all times.

Abstract: The invention provides an optical waveguide including a resin substrate containing an inorganic filler, and at least a UV-absorbing layer, a lower cladding layer, a patterned core layer, and an upper cladding layer laminated above the resin substrate in this order, wherein the core layer has been patterned through light exposure and development, and the UV-absorbing layer has a thickness of 10 to 50 ?m, and a method for producing an optical waveguide, including a step of forming a UV-absorbing layer on a resin substrate containing an inorganic filler; a step of forming a lower cladding layer on the UV-absorbing layer; a step of forming a core layer on the lower cladding layer; a step of subjecting the core layer to light exposure to thereby transfer a pattern having a given shape to the core layer; a step of developing the core layer to thereby form a core pattern; and a step of forming an upper cladding layer on the patterned core layer.

Abstract: The present invention provides a hybrid optical/electrical circuit board in which an optical waveguide prepared by an exposing and developing step is combined with an electric circuit, wherein a printed wiring board containing an inorganic filler and a light absorber is used, and it has an optical waveguide core pattern having a high resolution and makes it possible to raise a density of optical wiring.

Abstract: An RFID tag information communicating apparatus includes a feeding roller driving shaft that is provided within a housing constituting a shell of an apparatus main body and feeds a base tape, and an antenna for label production and an antenna for information transmission and reception, which are capable of transmitting and receiving information with an RFID circuit element for label production included in a base tape and an RFID circuit element for information transmission and reception located outside the housing. Each of the RFID circuit elements has an IC circuit part that stores information and an antenna that transmits and receives information. The apparatus is configured capable of performing both of the information reading and information writing with the RFID circuit element for label production and the RFID circuit element for information transmission and reception via the antennas.

Abstract: A method for producing a circuit board, contains, in this order, a step A of forming a circuit on a first substrate; a step B of laminating a first support on a surface of the first substrate having the circuit formed, through a first releasing layer; and a step C of forming a second substrate or circuit on a surface of the first substrate opposite to the surface having the circuit formed, and a method for producing an optoelectronic composite member, contains, in this order, a step of laminating an electric circuit board on a second support; a step of laminating a first support; a step of releasing the second support; and a step of forming an optical waveguide on a surface where the second support is released.