Optical assembly for optical transceiver and optical transceiver using same

An optical transceiver composed of a substrate, at least one optical element formed on the substrate, a driving circuit for driving the at least one optical element, and at least one optical fiber, the optical transceiver comprising:

• a body assembly comprising:
• a reflector configured to change a traveling direction of light moving in a z direction perpendicular to a plane formed by the substrate to a −x direction parallel to the substrate,
• a first lens group disposed between the at least one optical element and the reflector to optically couple the at least one optical element and the reflector,
• a body hole that is an empty space formed at a position spaced apart from the reflector by a predetermined distance, and
• a surplus liquid guide groove configured to be adjacent to the body hole, and to drain out an overflow of liquid introduced into the body hole;
• and
• a cover assembly comprising:
• a cover spacer inserted in the body hole in a −z direction, and
• a second lens group arranged on one side of the cover spacer, for optically coupling at least one optical fiber inserted from an outside in an x direction,
• wherein an optical path is established seamlessly from the at least one optical element to the at least one optical fiber through the first lens group, the reflector, the second lens group and the cover spacer in order, by coupling between the cover assembly and the body assembly, with a lower side portion of the cover assembly abutting an upper side portion of the body assembly.