Abstract: An opto-electric hybrid board in which a new alignment mark having an identifying mark that is easy to recognize is formed in addition to a conventional alignment mark, and a method of manufacturing the opto-electric hybrid board. The opto-electric hybrid board includes an optical waveguide portion 2, an electric circuit board 1, and optical elements mounted on this electric circuit board 1. The optical waveguide portion 2 includes a translucent under cladding layer 21, a linear core 22 for an optical path, first alignment marks 24 positioned relative to end portions of this core 22, and an over cladding layer 23 for covering the above-mentioned core 22 and the first alignment marks 24. The electric circuit board 1 includes second alignment marks 15 for positioning of the optical elements and formed on a surface thereof on which the optical elements are mounted.

Abstract: An opto-electric hybrid board which includes an optical waveguide portion 2, an electric circuit board 1, and optical elements mounted on this electric circuit board 1. In the optical waveguide portion 2, a linear core 22 for an optical path and protruding alignment marks 24 for positioning of the optical elements and each having a surface formed with a recessed portion 24a for identification are formed on a surface of a translucent under cladding layer 21. The above-mentioned core 22 is covered with an over cladding layer 23. The above-mentioned alignment marks 24 are covered with a translucent resin film 25 so that the recessed portion 24a of each of the above-mentioned alignment marks 24 is formed as a hollow portion A filled with air.

Abstract: An optical waveguide having a light path deflecting capability, including a core layer defining a light path, two cladding layers holding the core layer therebetween and covering the core layer, and a light path deflection structure formed selectively in a predetermined region of the core layer having a light path deflection cavities arranged at predetermined intervals in a matrix array in a phantom plane inclined at a predetermined angle with respect to an optical axis of the core layer by applying a laser beam a plurality of times to the core layer through either of the cladding layers without damaging the cladding layers. A method for manufacturing an optical waveguide having a light path deflecting capability including applying a laser beam a plurality of times to the core layer through either of the cladding layers without damaging the cladding layers and without damaging an outer surface of the optical waveguide.

Abstract: An opto-electric hybrid module manufacturing method which suppresses a cost loss, and to provide an opto-electric hybrid module manufactured by the method. An opto-electric hybrid module is produced by separately preparing a first board for a middle portion having an optical waveguide extending from one end to the other end of the board, a second board for a light emitting end portion having a light emitting element and an optical waveguide connectable to one end of the optical waveguide of the middle portion and a third board for a light receiving end portion having a light receiving element and an optical waveguide connectable to the other end of the optical waveguide of the middle portion, checking the second and third boards for light transmission, and connecting second and third boards judged to be acceptable to the first board.

Abstract: An optical waveguide film includes a film including a clad layer and a core layer covered by the clad layer; an adhesive layer formed on at least one surface of the film; and a plurality of projection portions formed on a surface of the adhesive layer and arranged at spaced intervals to one another.

Abstract: An opto-electric hybrid module capable of reducing the propagation loss of light beams, and a manufacturing method thereof. An opto-electric hybrid module in which a light-emitting element and a light-receiving element are mounted on the front surface side of an electric circuit board E, and an optical waveguide W1 is bonded to the back surface side thereof. The optical waveguide W1 includes a core having opposite end portions formed as light reflection portions. Portions of the core near the opposite end portions are formed as extensions extending from the light reflection portions toward the light-emitting element and the light-receiving element. The extensions and are positioned in through holes for light propagation formed in the electric circuit board E, and have distal end surfaces and in face-to-face relationship with a light-emitting portion of the light-emitting element and a light-receiving portion of the light-receiving element, respectively.

Abstract: To provide a manufacturing method of an optical waveguide device which is capable of suppressing the surface roughening of core side surfaces of an optical waveguide when the optical waveguide is formed on a surface of a metal substrate. An under cladding layer 2 containing an irradiation light absorbing agent is formed on a surface of a metal substrate 1 which is a roughened surface. Alternatively, an irradiation light absorbing layer is formed prior to the formation of the under cladding layer free from the irradiation light absorbing agent. In a subsequent step of forming cores 3, irradiation light directed onto a photosensitive resin layer for the formation of the cores 3 and transmitted through the photosensitive resin layer is absorbed or attenuated in the under cladding layer 2 containing the above-mentioned irradiation light absorbing agent or in the irradiation light absorbing layer.

Abstract: An opto-electric hybrid board manufacturing method which improves the alignment accuracy of an optical element with respect to a core of an optical waveguide. When a core (7) of an optical waveguide (W) is formed on a surface of an electric circuit board (E), the core (7) and optical element positioning alignment marks (A) are simultaneously formed from a photosensitive resin layer including a core formation region and an alignment mark formation region by a single photolithography process. In an optical element mounting step, a light emitting element (11) and a light receiving element (12) are mounted at proper positions with respect to the core (7) of the optical waveguide (W) with reference to the alignment marks (A).

Abstract: A method of manufacturing an opto-electric hybrid board capable of optically coupling light-emitting and light-receiving elements mounted on an electrical wiring board and an optical waveguide provided in an optical wiring board to each other easily with high accuracy. An opto-electric hybrid board obtained thereby. Guide pins have end portions fitted in alignment openings of an electrical wiring board and end portions fitted in alignment openings of an optical wiring board to accomplish alignment therebetween. The electrical wiring board is configured such that a conductor layer having pads for mounting light-emitting and light-receiving elements thereon and interconnect lines is formed on a metal substrate, and the alignment openings are formed in the metal substrate. The optical wiring board is configured such that an optical waveguide is formed on a metal substrate, and optical coupling openings for the optical waveguide and the alignment openings are formed in the metal substrate.

Abstract: A method of manufacturing optical waveguide device, comprising steps of: preparing optical waveguide including under cladding layer and protruding core pattern formed on the under cladding layer; preparing mold having protrusions for shaping recesses for fitting with predetermined portions of the core pattern; preparing board provided with light-receiving/emitting element mounted thereon; placing the mold around the light-receiving/emitting element for positioning top surfaces of the protrusions of the mold over light-receiving/emitting portions of the light-receiving/emitting element; filling the mold with sealing resin material and hardening the material in the mold to form sealing resin layer having recesses for fitting with the core pattern; after removing the sealing resin layer from the mold, the core pattern are fitted with the recesses of the resin layer to optically couple the light-receiving/emitting portions and the optical waveguide; and forming an over cladding layer for covering the remaining po

Abstract: A method of manufacturing an optical waveguide device which is capable of connecting light-receiving and light-emitting elements mounted on a board and an optical waveguide to each other with high accuracy. Insulation layers are formed on a first surface of a metal substrate. A first photomask is positioned by using an alignment mark formed in the metal substrate, and exposure to light and development are performed to form conductor layers. A second photomask is positioned on a second surface of the metal substrate opposite from the first surface by similarly using the above-mentioned alignment mark, and exposure to light and development are performed to form an opening for optical coupling between a light-emitting element and an optical waveguide film. The light-emitting element is mounted on pads of the conductor layers, and the optical waveguide film is fixed to the metal substrate using the optical coupling opening.

Abstract: An optical waveguide device production method which ensures that a receptacle structure can be easily and highly accurately produced in a single step, an optical waveguide device produced by the method, and an optical waveguide connection structure to be used for the optical waveguide device. The optical waveguide device includes a light emitting element (21) mounted on an upper surface of a board (20), and a core layer (29) which seals the light emitting element (21). The core layer (29) has an optical waveguide insertion recess (25) and an optical coupling lens (27) unitarily formed in a portion thereof opposed to a light emitting surface of the light emitting element (21). One end of an optical waveguide (30) is inserted in the recess (25) and fixed by a sealing resin (31). Thus, the optical waveguide (30) is optically coupled with a light emitting/receiving point of the light emitting element (21) in the core layer (29).

Abstract: A manufacturing method of an optical waveguide device which is capable of easily and precisely aligning the optical axis of a light receiving and emitting element and the optical axis of an optical waveguide and capable of shortening manufacturing time, and to provide an optical waveguide device obtained thereby. An under cladding layer 11 is formed on an upper surface of a substrate 10. A core layer 16 is formed on an upper surface of the under cladding layer 11. Horizontal alignment guides 17 made of the same material as the above-mentioned core layer 16 are formed on the above-mentioned substrate 10. A light emitting element 19 is installed on the substrate 10 along the horizontal alignment guides 17.

Abstract: An optical waveguide film includes a film including a clad layer and a core layer covered by the clad layer; and an adhesive layer formed at least on one surface of the film, having a rough structured surface having an arithmetic mean surface roughness of 0.1 to 2.0 ?m, and having a storage modulus at 25° C. of 10 to 100 MPa obtained by dynamic viscoelastic measurement in torsion mode with a frequency of 1 Hz.

Abstract: An optical waveguide film includes a film including a clad layer and a core layer covered by the clad layer; an adhesive layer formed on at least one surface of the film; and a plurality of projection portions formed on a surface of the adhesive layer and arranged at spaced intervals to one another.

Abstract: An optical waveguide film includes a clad layer having an adhesive function; and a core layer covered by the clad layer.