Abstract: An optical element includes a first condensing lens and a plurality of second condensing lenses. The optical element is disposed so as to face an end of an optical fiber. The optical fiber includes a core, a first cladding located around the core, and a second cladding located around the first cladding. The first condensing lens is disposed at a position corresponding to the core. The second condensing lenses are disposed around the first condensing lens at positions corresponding to the first cladding.

Abstract: According to the present disclosure, an optical connector (20) is attached to an optical transmission line (10) including a base body (11) and an optical waveguide (12) stacked on the base body (11). The optical connector (20) has a first side surface (A1) facing an end of the optical transmission line (10) and a second side surface (A2) located on a side opposite to the side on which the first side surface (A1) is located in a light propagation direction and includes at least one first lens (225) formed in the first side surface (A1) so as to face an end surface of the optical waveguide (12) and multiple second lenses (226) formed at positions on the second side surface (A2), the positions facing the first lens (225) in the light propagation direction. The first lens (225) is smaller in number than the second lenses (226).

Abstract: An optical connector (20) according to the present disclosure is an optical connector (20) attached to an optical transmission line (10), which includes a base body (11) and an optical waveguide (12) stacked on the base body (11). The optical connector (20) includes a first base (21) placed on the optical transmission line (10), a contact portion (213) included in the first base (21) and being in contact with a placement surface of the optical transmission line (10), and a bonding portion (214) formed in a region of the first base (21) in which the contact portion (213) is not formed and being spaced apart from a surface of the optical transmission line (10). A space (S2) is formed between the bonding portion (214) and the surface of the optical transmission line (10), and an agent (A) attaching the optical connector (20) to the optical transmission line (10) is provided in the space (S2).

Abstract: An optical element includes a first condensing lens and a plurality of second condensing lenses. The optical element is disposed so as to face an end of an optical fiber. The optical fiber includes a core, a first cladding located around the core, and a second cladding located around the first cladding. The first condensing lens is disposed at a position corresponding to the core. The second condensing lenses are disposed around the first condensing lens at positions corresponding to the first cladding.

Abstract: Provided is an optical connector used for connecting an optical waveguide substrate and an optical-fiber connector member, where the optical connector comprises a plurality of positioning structures, each having a cylindrical hole for inserting another end of a pin which has an end inserted into the connector member, and a groove formed on a second surface perpendicular to a first surface on which an open end of the hole is located, and where the groove and the hole are continuous, the groove has an arc-shaped cross section, and a center of a circle formed by a cross section of the hole and a center of an arc formed by the cross section of the groove are identical, and when the optical connector is coupled to the optical waveguide substrate that comprises a plurality of protrusions having a rectangular cross section, in each of the plurality of positioning structures, at least two corners of a corresponding protrusion among the plurality of protrusions are supported by an inner wall of the groove.

Abstract: An optical connector module (1) according to the present disclosure includes an optical waveguide board (10) and an optical connector (20) attached to the optical waveguide board (10). The optical connector (20) includes a positioning target portion (23) that engages with the optical waveguide board (10), and the optical connector (20) is positioned relative to the optical waveguide board (10) in a state in which the positioning target portion (23) is engaged with the optical waveguide board (10). The optical waveguide board (10) includes an optical waveguide (12) including a first cladding (122a) and a core (121) stacked on the first cladding (122a), the first cladding being stacked on a substrate (11) in a stacking direction perpendicular to the substrate (11), and a positioning core (14) that is stacked on the first cladding (122a) by using a material the same as a material of the core (121) and that engages with the positioning target portion (23).

Abstract: An optical connector module can contribute to a reduction in size while reducing coupling loss. An optical connector module (1) according to the present disclosure includes an optical transmission line (10) including cores (12) and a cladding (11), an optical connector (20) including a first side surface (A1) facing an end face of the cores (12) and configured to optically couple to the optical transmission line (10), and a refractive index matching material (30) configured to adjust the refractive index of a space between the cores (12) and the first side surface (A1). The refractive index matching material (30) is disposed between the first side surface (A1) and the end face. A curved first lens portion (23) is provided on the first side surface (A1) at a position opposite the cores (12).

Abstract: Provided is an optical connector used for connecting an optical waveguide substrate and an optical-fiber connector member, where the optical connector comprises a plurality of positioning structures, each having a cylindrical hole for inserting another end of a pin which has an end inserted into the connector member, and a groove formed on a second surface perpendicular to a first surface on which an open end of the hole is located, and where the groove and the hole are continuous, the groove has an arc-shaped cross section, and a center of a circle formed by a cross section of the hole and a center of an arc formed by the cross section of the groove are identical, and when the optical connector is coupled to the optical waveguide substrate that comprises a plurality of protrusions having a rectangular cross section, in each of the plurality of positioning structures, at least two corners of a corresponding protrusion among the plurality of protrusions are supported by an inner wall of the groove.

Abstract: Provided is an optical path converting component capable of being positioned and fixed with less work steps and with a high degree of accuracy. The disclosed optical path converting component (10) configured to optically couple an optical input/output interface (20) disposed on a board and an optical transmission path (100) includes a base body (11) disposed on an optical path connecting the optical input/output interface (20) and the optical transmission path (100) and a mounting portion (118, 121) configured to be mounted on a board (CB) by soldering.

Abstract: An optical connector module can contribute to a reduction in size while reducing coupling loss. An optical connector module (1) according to the present disclosure includes an optical transmission line (10) including cores (12) and a cladding (11), an optical connector (20) including a first side surface (A1) facing an end face of the cores (12) and configured to optically couple to the optical transmission line (10), and a refractive index matching material (30) configured to adjust the refractive index of a space between the cores (12) and the first side surface (A1). The refractive index matching material (30) is disposed between the first side surface (A1) and the end face. A curved first lens portion (23) is provided on the first side surface (A1) at a position opposite the cores (12).

Abstract: Provided is an optical path converting component capable of being positioned and fixed with less work steps and with a high degree of accuracy. The disclosed optical path converting component (10) configured to optically couple an optical input/output interface (20) disposed on a board and an optical transmission path (100) includes a base body (11) disposed on an optical path connecting the optical input/output interface (20) and the optical transmission path (100) and a mounting portion (118, 121) configured to be mounted on a board (CB) by soldering.

Abstract: An optical connector according to the present disclosure is an optical connector for optically coupling a first optical transmission path and a second optical transmission path, including a first connector part disposed so as to cover at least a part of the first optical transmission path the first connector part including a first positioning portion for performing positioning with respect to the first optical transmission path a second positioning portion for performing positioning of the second optical transmission path held by the second connector part connected to the first connector part and a measurement auxiliary portion formed so as to correspond to the arrangement of the second positioning portion, wherein at least a part of the first positioning portion and at least a part of the measurement auxiliary portion are formed at positions that can be visually recognized simultaneously from the same direction.

Abstract: An optical connector, optical connector system, and active optical cable provided with these suffer little effect from scratches on the end face of an optical waveguide or from foreign material (dust) adhering to the end face, are manufacturable easily at low-cost, and moreover can send/receive optical signals efficiently between the end faces of the optical waveguide and an optical fiber. An optical connector (30) includes a connector body (30) provided between and connecting a substrate (10) faced by an optical input/output end face (11t) of an optical waveguide (11) and a ferrule (20) faced by an optical input/output end face (23t) of an optical fiber (23), and a lens portion (36) provided in the connector body (30) between the end face (11t) of the optical waveguide (11) and the end face (23t) of the optical fiber (23) and configured to send/receive an optical signal between the end faces (11t, 23t).

Abstract: An optical connector according to the present disclosure is an optical connector for optically coupling a first optical transmission path and a second optical transmission path, including a first connector part disposed so as to cover at least a part of the first optical transmission path the first connector part including a first positioning portion for performing positioning with respect to the first optical transmission path a second positioning portion for performing positioning of the second optical transmission path held by the second connector part connected to the first connector part and a measurement auxiliary portion formed so as to correspond to the arrangement of the second positioning portion, wherein at least a part of the first positioning portion and at least a part of the measurement auxiliary portion are formed at positions that can be visually recognized simultaneously from the same direction.

Abstract: An optical connector, optical connector system, and active optical cable provided with these suffer little effect from scratches on the end face of an optical waveguide or from foreign material (dust) adhering to the end face, are manufacturable easily at low-cost, and moreover can send/receive optical signals efficiently between the end faces of the optical waveguide and an optical fiber. An optical connector (30) includes a connector body (30) provided between and connecting a substrate (10) faced by an optical input/output end face (11t) of an optical waveguide (11) and a ferrule (20) faced by an optical input/output end face (23t) of an optical fiber (23), and a lens portion (36) provided in the connector body (30) between the end face (11t) of the optical waveguide (11) and the end face (23t) of the optical fiber (23) and configured to send/receive an optical signal between the end faces (11t, 23t).