Abstract: An opto-electric composite transmission module includes a motherboard and an opto-electric hybrid board. The opto-electric hybrid board includes an optical waveguide and an electric circuit board sequentially in the thickness direction. The optical waveguide includes a core layer, an under-cladding layer, and an over-cladding layer. The core layer includes a mirror. The electric circuit board includes a first terminal and a second terminal. The optical waveguide is disposed so that an opto-electric conversion element, which is electrically connected to the first terminal, can optically be connected to the mirror. The second terminal is electrically connected to the motherboard.

Abstract: An opto-electric hybrid board capable of precisely mounting an optical element in a mirror position of an optical waveguide, there is provided an opto-electric hybrid board including: an electric circuit board having first and second surfaces and including terminals for mounting an optical element on the first surface; and an optical waveguide provided on the second surface of the electric circuit board and including a mirror for optical coupling to the optical element, wherein an alignment mark for identifying the position of an exit surface of light exiting via the mirror of the optical waveguide is formed on the first surface of the electric circuit board.

Abstract: An optical module includes: an electric circuit board E including an electric circuit provided on a light-permeable resin substrate 1; and an optical element 11 joined onto the electric circuit board E. The optical element 11 is joined to the electric circuit board E, with a light-emitting portion (or light-receiving portion) 11a of the optical element 11 facing an electric circuit surface side of the electric circuit board E. A space between the light-emitting portion (or light-receiving portion) 11a of the optical element 11 and the light-permeable resin substrate 1 is filled with a light-permeable resin cured material X. A relative refractive index difference between the light-permeable resin cured material X and the light-permeable resin substrate 1 is not greater than 20%. This reduces the propagation loss of light with a simple structure.

Abstract: An opto-electric hybrid board that achieves sufficiently lower noise for signal transmission, is less prone to cause warpage during the mounting of various elements, and has high-speed communication properties, an opto-electric hybrid board ? including: an electric circuit board 1; an optical waveguide 2 formed in a stacked manner on a first surface 1a of the electric circuit board 1; and a reinforcement plate 3 for reinforcing the electric circuit board 1, wherein a surface of the optical waveguide 2 on the opposite side from a surface thereof contacting the first surface 1a of the electric circuit board 1 is covered with the reinforcement plate 3.

Abstract: An optical module in which a space between a light emitting portion (or a light receiving portion) (11a) of an optical element (11) and an insulating layer (1) of an electric circuit board (E) is filled with a cured product of a light-transmissive resin composition containing a curing agent component including only a non-antimony-containing curing agent (i.e., an optical element bonding/reinforcing resin cured product (X)) and a junction between the optical element (11) and the electric circuit board (E) is reinforced with the cured product.

Abstract: Provided is an optical connector that includes a ferrule and an optical fiber as a plastic optical fiber. The ferrule has a leading end face and a through hole for holding a fiber, the through hole having an opening end in the leading end face. The optical fiber has a leading end. The leading end of the optical fiber is inserted in the through hole and located at a retraction position retracted from the leading end face.

Abstract: An opto-electric hybrid board includes an optical waveguide, and an electric circuit board disposed on a one-side surface in the thickness direction of the optical waveguide. The electric circuit board includes a first terminal on which an optical element portion is mounted and a second terminal on which a driver element portion is mounted. The electric circuit board includes a metal supporting layer that overlaps the first terminal and the second terminal when the electric circuit board is projected in the thickness direction. The metal supporting layer has an opening portion that is located between the first terminal and the second terminal when the metal supporting layer is projected in the thickness direction.

Abstract: An opto-electric hybrid board connector includes an opto-electric hybrid board extending along a transmission direction of light in an optical waveguide, and a connector to which an attached region of the opto-electric hybrid board is attached. The attached region has a board front end surface for inputting and outputting light to and from the optical waveguide. The connector has a connector front end surface disposed to be flush with the board front end surface. The surface roughness SRa1 of the board front end surface is 0.2 ?m or more and 3 ?m or less. A difference D between the surface roughness SRa1 of the board front end surface and the surface roughness SRa2 of the connector front end surface is 1 ?m or less.

Abstract: Provided is optical module as a photoelectric conversion module that includes a photoelectric hybrid board, a light-receiving/emitting element, a driving element, and a heat dissipating sheet. The light-receiving/emitting element and the driving element are mounted on one surface in a thickness direction of the photoelectric hybrid board. The heat dissipating sheet is in contact with the light-receiving/emitting element and the driving element from a side opposite to the photoelectric hybrid board. The driving element has a greater height above the photoelectric hybrid board than the light-receiving/emitting element.

Abstract: An optical element device includes an opto-electric hybrid board sequentially including an optical waveguide having a mirror, and an electric circuit board having a terminal in a thickness direction, and an optical element optically connected to the mirror and electrically connected to the terminal. The opto-electric hybrid board includes a mounting region including the mirror and the terminal when projected in the thickness direction and mounted with the optical element. Furthermore, the opto-electric hybrid board includes an alignment mark for aligning the optical element with respect to the mirror. The alignment mark is made of a material for forming the optical waveguide, and disposed at both outer sides of the mounting region in a width direction.

Abstract: Provided is an opto-electric transmission composite module and an opto-electric hybrid board, both of which can suppress the reduction in the function of an optical element when a driver element generates heat. The opto-electric transmission composite module includes: an opto-electric hybrid board including an optical waveguide, and an electric circuit board including a first terminal for mounting an optical element; and a printed wiring board including a fourth terminal for mounting a driver element. The printed wiring board is electrically connected with the electric circuit board.

Abstract: An opto-electric hybrid board includes an optical waveguide extending in the longitudinal direction and an electric circuit board disposed on a one-side surface in the thickness direction of the optical waveguide and extending in the longitudinal direction. The electric circuit board includes a first terminal disposed in a one end portion in the longitudinal direction of a one-side surface in the thickness direction of the electric circuit board and being for mounting the optical element, and a second terminal disposed in the one end portion in the longitudinal direction of the one-side surface in the thickness direction of the electric circuit board and being for mounting a driver element electrically connected with the optical element. The electric circuit board has one edge in the longitudinal direction at one side in the longitudinal direction as compared to one edge in the longitudinal direction of the optical waveguide.

Abstract: An opto-electric hybrid board connector includes an opto-electric hybrid board, a connector, and an adhesive member. The board has a bottom surface, a first side surface, and a second side surface. The connector has an inner bottom surface, a first inner side surface, and a second inner side surface. The adhesive member includes a first adhesive member having contact with the inner bottom surface, first inner side surface, and first side surface facing a first gap, and a second adhesive member filled in the first gap and having contact with the inner bottom surface, second inner side surface, and second side surface facing a second gap. A ratio (L1/L0) of a width L1 of the first gap to a width L0 of the inner bottom surface, and a ratio (L2/L0) of a width L2 of the second gap to the width L0 of the inner bottom surface are 0.01 or more.

Abstract: An optical connector member is provided, which includes an optical waveguide retaining portion provided on one of opposite sides of an optical coupling portion and having a cavity for retaining an end portion of an optical waveguide, and an optical fiber retaining portion provided on the other side and having a through-hole for retaining an end portion of an optical fiber. A distal end face of the end portion of the optical waveguide retained in the cavity of the optical waveguide retaining portion and a distal end face of the end portion of the optical fiber retained in the through-hole of the optical fiber retaining portion are positioned in opposed relation to each other in the optical coupling portion with an optical axis of the optical waveguide in alignment with an optical axis of the optical fiber.

Abstract: An optical element-including opto-electric hybrid board includes an opto-electric hybrid board including an optical waveguide and an electric circuit board in order toward one side in a thickness direction, an optical element mounted on the electric circuit board at one side in the thickness direction of the opto-electric hybrid board, and a bonding member interposed between the optical element and the electric circuit board so as to bond the optical element to the electric circuit board.

Abstract: An optical waveguide includes a first core and a second core disposed adjacent to each other at spaced intervals and a dummy core positioned between the first core and the second core. The first core and the second core transmit light in a transmission direction perpendicular to an adjacent direction. The dummy core includes a facing surface facing the first core and an opposing surface positioned at the opposite side to the first core with respect to the facing surface, and the opposing surface has an inclined surface inclining so as to go away from the first core toward the downstream side in the transmission direction.

Abstract: An optical waveguide member connector kit includes an optical waveguide member including an optical waveguide and a connector accommodating the optical waveguide member. The connector includes a main body having a bottom wall, and a first wall and a second wall that extend from the bottom wall toward one side in a thickness direction of the bottom wall and face each other at spaced intervals therebetween, and a lid disposed between the first wall and the second wall and sandwiching the optical waveguide member with the bottom wall when the optical waveguide member is accommodated in the connector. A ratio (L1/L2) of a length L1 in a facing direction of the lid to a facing length L2 between the first wall and the second wall is 0.80 or more and 0.99 or less.

Abstract: An opto-electric hybrid board connector includes an opto-electric hybrid board extending along a transmission direction of light in an optical waveguide, and a connector to which an attached region of the opto-electric hybrid board is attached. The attached region has a board front end surface for inputting and outputting light to and from the optical waveguide. The connector has a connector front end surface disposed to be flush with the board front end surface. The surface roughness SRa1 of the board front end surface is 0.2 ?m or more and 3 ?m or less. A difference D between the surface roughness SRa1 of the board front end surface and the surface roughness SRa2 of the connector front end surface is 1 ?m or less.

Abstract: An opto-electric hybrid board connector includes an opto-electric hybrid board, a connector, and an adhesive member. The board has a bottom surface, a first side surface, and a second side surface. The connector has an inner bottom surface, a first inner side surface, and a second inner side surface. The adhesive member includes a first adhesive member having contact with the inner bottom surface, first inner side surface, and first side surface facing a first gap, and a second adhesive member filled in the first gap and having contact with the inner bottom surface, second inner side surface, and second side surface facing a second gap. A ratio (L1/L0) of a width L1 of the first gap to a width L0 of the inner bottom surface, and a ratio (L2/L0) of a width L2 of the second gap to the width L0 of the inner bottom surface are 0.01 or more.

Abstract: An optical element device includes an opto-electric hybrid board sequentially including an optical waveguide having a mirror, and an electric circuit board having a terminal in a thickness direction, and an optical element optically connected to the mirror and electrically connected to the terminal. The opto-electric hybrid board includes a mounting region including the mirror and the terminal when projected in the thickness direction and mounted with the optical element. Furthermore, the opto-electric hybrid board includes an alignment mark for aligning the optical element with respect to the mirror. The alignment mark is made of a material for forming the optical waveguide, and disposed at both outer sides of the mounting region in a width direction.