Light emitting device

A light emitting device comprising:

• a semiconductor laser element configured to emit light in a first direction;
• a light-reflecting part having a light-reflecting surface;
• and
• a base member comprising:
• a bottom part,
• a wall part surrounding the bottom part and having an upper surface,
• a recess defined by an upper surface of the bottom part and an inner lateral surface of the wall part, the recess being located inward of the upper surface of the wall part in a top view,
• a first wiring part comprising a first wiring region and a second wiring region provided on the upper surface of the wall part, and
• a second wiring part comprising a first wiring region and a second wiring region that are located in the recess, wherein:
• the light-reflecting part is located at a position spaced from the inner lateral surface of the wall part that defines the recess,
• in the top view, the wall part includes a first outer edge toward which the semiconductor laser element is configured to emit light, a second outer edge opposite the first outer edge, a third outer edge extending from the first outer edge to the second outer edge, and a fourth outer edge opposite the third outer edge,
• in the top view, the recess includes a first outer edge extending along the first outer edge of the wall part, a second outer edge opposite the first outer edge, a third outer edge extending along the third outer edge of the wall part, and a fourth outer edge opposite the third outer edge,
• the semiconductor laser element and the light-reflecting part are located in the recess, the light reflecting part being located between the semiconductor laser element and the first outer edge of the recess,
• the first wiring region and the second wiring region of the first wiring part are located between the second outer edge of the wall part and the second outer edge of the recess,
• a distance between the second outer edge of the wall part and the second outer edge of the recess is greater than a distance between the first outer edge of the wall part and the first outer edge of the recess and greater than a distance between the third outer edge of the wall part and the third outer edge of the recess, and
• the first wiring region and the second wiring region of the first wiring part are arranged adjacent to each other in a second direction perpendicular to the first direction on the upper surface of the wall part.