Optical connector, optical connector system, and active optical cable provided with same

An optical connector system comprising:

• a substrate comprising an optical element;
• a plurality of optical waveguides provided on said substrate so as to form an optical path continuing to said optical element, with optical input/output end faces of said optical waveguides formed on an end face of said substrate;
• a ferrule holding a plurality of optical fibers comprising optical input/output end faces configured to send and receive an optical signal to and from said optical input/output end faces of said plurality of optical waveguides;
• a receptacle being L-shaped and comprising an upper surface wall that conforms to a substrate layer of said substrate, an end face wall formed to be orthogonal to said upper surface wall at an end of said upper surface wall on said ferrule side, and an intervening wall extending between said upper surface wall and said end face wall and made of a translucent material at a position between said optical input/output end faces of said optical waveguides and said optical input/output end faces of said optical fibers;
• and
• a plurality of optical waveguide-side lenses facing said optical input/output end faces of said plurality of optical waveguides and a plurality of optical fiber-side lenses facing said optical input/output end faces of said plurality of optical fibers, said pluralities of optical waveguide-side lenses and optical fiber-side lenses provided integrally on said intervening wall of said receptacle at positions between, and in a non-contact manner relative to, said optical input/output end faces of said plurality of optical waveguides and said optical input/output end faces of said plurality of optical fibers, respectively, and configured to send and receive an optical signal between said optical input/output end faces of said plurality of optical waveguides and said optical input/output end faces of said plurality of optical fibers,
• wherein said end face wall comprises a first end face facing an end face of said substrate in an optical transmission direction and positioned closer to said substrate than said optical waveguide-side lens, and a second end face facing said ferrule in said optical transmission direction and positioned closer to said ferrule than said optical fiber-side lens;
• and
• wherein a positioning surface that comes in contact with said substrate layer is formed on said upper surface wall.