Optical module

An optical module comprising:

• a substrate;
• an optical device;
• and
• a plurality of light transmitting elements and a plurality of light receiving elements disposed on the substrate, and between the optical device and the substrate,
• wherein the optical device is disposed above the plurality of light transmitting elements and the plurality of light receiving elements,
• the optical device comprises a device body, and an optical transceiver interface and a lens array that are disposed on the device body,
• the optical device is configured so that an optical signal transmitted from the plurality of light transmitting elements passes through the optical transceiver interface before leaving the optical module, and an optical signal transmitted from outside of the optical module passes through the optical transceiver interface before reaching the plurality of light receiving elements,
• the lens array is configured to optically couple the plurality of light transmitting elements with the optical transceiver interface, and to optically couple the optical transceiver interface with the plurality of light receiving elements,
• the lens array comprises:
• a plurality of light transmitting lenses arranged along a same direction as the plurality of light transmitting elements and located on a first surface of the device body facing the plurality of light transmitting elements, light transmitted from each of the plurality of light transmitting elements entering into a corresponding one of the plurality of light receiving light transmitting lenses;
• a plurality of light receiving lenses arranged along the same direction as the plurality of light receiving elements and located on the first surface of the device body facing the plurality of light receiving elements, light entering into each of the plurality of light receiving elements coming from a corresponding one of the plurality of light receiving light receiving lenses;
• a reflective surface arranged at a preset angle relative to the first surface, the reflective surface reflecting light from each of the plurality of light transmitting lenses to the optical transceiver interface or reflecting light from the optical transceiver interface to the plurality of light receiving lenses;
• an optical filter arranged parallel to the reflective surface, the optical filter reflecting light from the optical transceiver interface to the plurality of light receiving lenses and letting pass light reflected by the reflective surface from each of the plurality of light transmitting lenses, or reflecting light from each of the plurality of light transmitting lenses to the optical transceiver interface and letting pass light from the optical transceiver interface;
• a plurality of optical transceiver lenses arranged in the same direction as the plurality of light transmitting lenses and formed on a second surface of the device body, the plurality of optical transceiver lenses receiving reflected light from the reflective surface or the optical filter and guiding light that enters the optical transceiver interface to the optical filter or the reflective surface;
• and
• at least one auxiliary lens disposed on an optical coupling path between the plurality of light transmitting elements and the optical transceiver interface, or on an optical coupling path between the optical transceiver interface and the plurality of light receiving elements.