Abstract: A micromirror array according to the present invention is a corner reflector type micromirror array capable of projecting a mirror image of an object to be projected sharply with high luminance. The micromirror array includes a substrate, and a plurality of unit optical elements (quadrangular prisms) formed in an array on the substrate. Each of the unit optical elements is of a protruding or recessed shape perpendicular to the surface of the substrate. The unit optical elements has two side surfaces orthogonal to each other on opposite sides of a corner of the side surfaces, and the two side surfaces are light reflecting surfaces. Each of the light reflecting surfaces is of a rectangular shape such that the ratio of the vertical length thereof as measured in a substrate thickness direction to the horizontal width thereof as measured in a substrate surface direction is not less than 1.5.

Abstract: Provided are an opto-electric hybrid board which eliminates the necessity of an aligning operation of a core of an optical waveguide unit and an optical element of an electric circuit unit and which is excellent in mass-productivity, and a manufacturing method therefor. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon, the electric circuit unit being coupled to the optical waveguide unit. The optical waveguide unit includes fitting holes which are formed in a surface of an overcladding layer and are located and formed at predetermined locations with respect to one end surface of a core. The electric circuit unit includes protruding portions which fit into the fitting holes and are located and formed at predetermined locations with respect to the optical element.

Abstract: A micromirror array according to the present invention is a corner reflector type micromirror array capable of projecting a mirror image of an object to be projected sharply with high luminance. The micromirror array includes a substrate, and a plurality of unit optical elements (quadrangular prisms) formed in an array on the substrate. Each of the unit optical elements is of a protruding or recessed shape perpendicular to the surface of the substrate. The unit optical elements has two side surfaces orthogonal to each other on opposite sides of a corner of the side surfaces, and the two side surfaces are light reflecting surfaces. Each of the light reflecting surfaces is of a rectangular shape such that the ratio of the vertical length thereof as measured in a substrate thickness direction to the horizontal width thereof as measured in a substrate surface direction is not less than 1.5.

Abstract: In an optical waveguide 10 with a light-emitting element to be used in the present invention, a core includes: a main path; and a plurality of branched paths branched at a plurality of branched points from the main path. The main path has two sides faced to each other, in which one side has a plurality of branched points and the other side does not have any branched points. The plurality of branched points are provided on a straight line substantially parallel to a light guiding direction of the main path. The width of the main path becomes narrower as the main path moves away from a light-emitting element. An angle ? formed by the other side without a branched point and the light guiding direction of the main path is 0.3 to 1.7°.

Abstract: Provided are an opto-electric hybrid board and a manufacturing method therefor. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon, the electric circuit unit being coupled to the optical waveguide unit using coupling pins. The optical waveguide unit includes fitting holes for fitting the coupling pins thereinto, which are formed in a surface of an overcladding layer, located and formed at predetermined locations with respect to one end surface of a core. The electric circuit unit includes fitting through holes for fitting the coupling pins therethrough, located and formed at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled to each other in a state in which the coupling pins fit through the fitting through holes and fit into the fitting holes.

Abstract: Provided are an opto-electric hybrid board and a manufacturing method therefor. An optical waveguide unit includes protruding portions which are extendingly provided at portions of at least one of an undercladding layer and an overcladding layer, and the protruding portions are located and formed at predetermined locations with respect to a light transmitting surface of a core. An electric circuit unit includes a bent portion having fitting holes into which the protruding portions fit and having an optical element. The fitting holes are located and formed at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled to each other in a state in which the protruding portions fit into the fitting holes to form an opto-electric hybrid board.

Abstract: A method of manufacturing an optical waveguide is provided in which a mold that prevents fins or burrs from being formed is used for the formation of an over cladding layer in the optical waveguide. The mold for the formation of the over cladding layer is produced from a light-transmissive resin by molding using a mold member including a protruding portion identical in shape with the over cladding layer and a ridge portion provided around the protruding portion. For the formation of the over cladding layer, the cavity is filled with a photosensitive resin for the formation of the over cladding layer, and the photosensitive resin is cured by being exposed to light through the mold while cores formed on a surface of an under cladding layer are immersed in the photosensitive resin and part of the photosensitive resin spilling out of the cavity is collected in the groove.

Abstract: Provided are an opto-electric hybrid board which eliminates the necessity of an aligning operation of a core of an optical waveguide unit and an optical element of an electric circuit unit and which is excellent in mass-productivity, and a manufacturing method therefor. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon, the electric circuit unit being coupled to the optical waveguide unit. The optical waveguide unit includes protruding portions which are extendingly provided at portions of at least one of the undercladding layer and the overcladding layer, and are located and formed at predetermined locations with respect to a light transmitting surface of a core. The electric circuit unit includes fitting holes into which the protruding portions fit, and are located and formed at predetermined locations with respect to the optical element.

Abstract: Provided are an opto-electric hybrid board and a manufacturing method. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon. The optical waveguide unit includes socket portions for locating the electric circuit unit, which are formed on a surface of an undercladding layer and formed of the same material as a core. The socket portions are located at predetermined locations with respect to one end surface of a core. The electric circuit unit includes bent portions which are formed by bending a part of an electric circuit board so as to stand, for fitting into the socket portions. The bent portions are located at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled in a state in which the bent portions fit into the socket portions.

Abstract: Provided are an opto-electric hybrid board and a manufacturing method therefor. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon, the electric circuit unit being coupled to the optical waveguide unit. The optical waveguide unit includes notch portions for locating the electric circuit unit, which is formed in portions of at least one of an undercladding layer and an overcladding layer, and the notch portions are located and formed at predetermined locations with respect to one end surface of a core. The electric circuit unit includes bent portions, which fit into the notch portions, and the bent portions are located and formed at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled to each other under a state in which the bent portions fit into the notch portions.

Abstract: An optical waveguide device is provided which is capable of distributing light beams from a light source equally to long and short sides of a rectangular panel and which does not require a high degree of accuracy for alignment between the light source and a core. The optical waveguide device includes the light source provided on an edgewise extending frame part of a rectangular panel, and an optical waveguide provided on the frame part and including the branched core having a common portion closer to the light source, the branched core being divided from the common portion into a first core portion and a second core portion orthogonal to each other. The common portion is disposed at a corner of the frame part. The second core portion has a width greater than the width of the first core portion.

Abstract: In an optical waveguide 10 with a light emitting device to be used in the present invention, branched points 16 are sequentially provided in a guiding light direction 17 of a main path 14 and the width of the main path 14 becomes narrower as the main path 14 moves away from a light emitting device 11. The optical waveguide 10 having this structure can reduce a width W1 because there are no portions that correspond spaces (cladding layers) among adjacent branched paths 15. Moreover, the optical waveguide 10 has an excellent optical transmission efficiency, resulting in high intensity of light emitted. Uniformity of the light emitted is equal or more than a conventional optical waveguide 60 with a light emitting device.

Abstract: Provided are an opto-electric hybrid board and a manufacturing method therefor. An optical waveguide unit includes protruding portions which are extendingly provided at portions of at least one of an undercladding layer and an overcladding layer, and the protruding portions are located and formed at predetermined locations with respect to a light transmitting surface of a core. An electric circuit unit includes a bent portion having fitting holes into which the protruding portions fit and having an optical element. The fitting holes are located and formed at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled to each other in a state in which the protruding portions fit into the fitting holes to form an opto-electric hybrid board.

Abstract: Provided are an opto-electric hybrid board and a manufacturing method therefor. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon, the electric circuit unit being coupled to the optical waveguide unit using coupling pins. The optical waveguide unit includes fitting holes for fitting the coupling pins thereinto, which are formed in a surface of an overcladding layer, located and formed at predetermined locations with respect to one end surface of a core. The electric circuit unit includes fitting through holes for fitting the coupling pins therethrough, located and formed at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled to each other in a state in which the coupling pins fit through the fitting through holes and fit into the fitting holes.

Abstract: Provided are an opto-electric hybrid board and a manufacturing method. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon. The optical waveguide unit includes socket portions for locating the electric circuit unit, which are formed on a surface of an undercladding layer and formed of the same material as a core. The socket portions are located at predetermined locations with respect to one end surface of a core. The electric circuit unit includes bent portions which are formed by bending a part of an electric circuit board so as to stand, for fitting into the socket portions. The bent portions are located at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled in a state in which the bent portions fit into the socket portions.

Abstract: Provided are an opto-electric hybrid board and a manufacturing method therefor. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon, the electric circuit unit being coupled to the optical waveguide unit. The optical waveguide unit includes notch portions for locating the electric circuit unit, which is formed in portions of at least one of an undercladding layer and an overcladding layer, and the notch portions are located and formed at predetermined locations with respect to one end surface of a core. The electric circuit unit includes bent portions, which fit into the notch portions, and the bent portions are located and formed at predetermined locations with respect to the optical element. The optical waveguide unit and the electric circuit unit are coupled to each other under a state in which the bent portions fit into the notch portions.

Abstract: Provided are an opto-electric hybrid board which eliminates the necessity of an aligning operation of a core of an optical waveguide unit and an optical element of an electric circuit unit and which is excellent in mass-productivity, and a manufacturing method therefor. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon, the electric circuit unit being coupled to the optical waveguide unit. The optical waveguide unit includes fitting holes which are formed in a surface of an overcladding layer and are located and formed at predetermined locations with respect to one end surface of a core. The electric circuit unit includes protruding portions which fit into the fitting holes and are located and formed at predetermined locations with respect to the optical element.

Abstract: Provided are an opto-electric hybrid board which eliminates the necessity of an aligning operation of a core of an optical waveguide unit and an optical element of an electric circuit unit and which is excellent in mass-productivity, and a manufacturing method therefor. The opto-electric hybrid board includes an optical waveguide unit and an electric circuit unit having an optical element mounted thereon, the electric circuit unit being coupled to the optical waveguide unit. The optical waveguide unit includes protruding portions which are extendingly provided at portions of at least one of the undercladding layer and the overcladding layer, and are located and formed at predetermined locations with respect to a light transmitting surface of a core. The electric circuit unit includes fitting holes into which the protruding portions fit, and are located and formed at predetermined locations with respect to the optical element.

Abstract: Provided is a cost-effective manufacturing method for an optical connector, which enables an optical waveguide to be fixed to a ferrule easily in a short period of time. A manufacturing method for an optical connector includes: fitting an end portion of a transparent optical waveguide into an optical waveguide fitting groove of an optical connection ferrule made of a resin; and fusing and fixing the end portion of the transparent optical waveguide to the optical connection ferrule by applying a laser beam having a predetermined wavelength downward from above the optical waveguide fitting groove toward the transparent optical waveguide, so that the laser beam reaches a bottom surface of the optical waveguide fitting groove.

Abstract: A main path in an optical waveguide with a light-emitting element has two sides faced to each other: one side has a plurality of branched points and the other side does not have any branched points. A width W of the main path becomes narrower as the main path moves away from a light-emitting element. An angle ? formed by the main path and a light guiding direction in each branched point of each branched path is 0.1° to 2.0°. An angle ? formed by the other side without branched points and the light guiding direction of the main path is 0.3° to 1.7°.