Light-receiving element and light-emitting device

A light emitting device comprising:

• a plurality of light emitting elements disposed in a row in a first direction, each having an upper surface, a lower surface, and a lateral surface including an emission end surface from which light is emitted, the plurality of light emitting elements including:
• a first light emitting element, which is an outermost one of the light emitting elements at a first end of the row of light emitting elements, wherein the first light emitting element is configured to emit light having a first optical axis, and
• a second light emitting element, which is an outermost one of the light emitting elements at a second end of the row of light emitting elements opposite the first end of the row of light emitting elements, wherein the second light emitting element is configured to emit light having a second optical axis;
• a light detecting element comprising a light detecting surface, the light detecting surface comprising:
• a plurality of light detecting regions disposed in a row in the first direction and irradiated with the light emitted from respective ones of the plurality of light emitting elements, the plurality of light detecting regions including:
• a first light detecting region, which is an outermost one of the light detecting regions at a first end of the row of light detecting regions, wherein the first light detecting region is configured to be irradiated with the light emitted from the first light emitting element at a first irradiation point along the first optical axis, and
• a second light detecting region, which is an outermost one of the light detecting regions at a second end of the row opposite the first end, wherein the second light detecting region is configured to be irradiated with the light emitted from the second light emitting element at a second irradiation point along the second optical axis, wherein:
• each of the plurality of light detecting regions is longer in a second direction than in the first direction, the second direction being perpendicular to the first direction, and
• a plurality of light detecting element wiring regions, each of which is an entirety of a region through which current is provided to a respective one of the light detecting regions, the plurality of light detecting element wiring regions including:
• a first light detecting element wiring region electrically connected to the first light detecting region, and
• a second light detecting element wiring region electrically connected to the second light detecting region;
• a base member comprising a plurality of base member wiring regions and on which the plurality of light emitting elements and the light detecting element are disposed;
• and
• a plurality of wires, each having a first end bonded to a respective one of the light detecting element wiring regions and a second end bonded to a respective one of the base member wiring regions, wherein:
• in a top view, the first and second light detecting element wiring regions are located in an end region of the light detecting surface located outward of a central region at the light detecting surface, and are not located in the central region, the central region being defined as a region between (i) a straight line extending in the second direction and passing through the first irradiation point and (ii) a straight line extending in the second direction and passing through the second irradiation point.