Light source device

A light source device comprising:

• a plurality of light-emitting portions arranged along an arrangement direction and an orthogonal direction that is orthogonal to the arrangement direction;
• one or more optical members comprising a first reflective surface, a second reflective surface, and a stepped reflective surface, wherein the one or more optical members are configured to reflect light emitted from the plurality of light-emitting portions and emit the light in a predetermined direction;
• and
• a condenser lens configured to condense the light emitted from the one or more optical members;
• wherein:
• the first reflective surface is configured to reflect the light emitted from the plurality of light-emitting portions toward the second reflective surface;
• the second reflective surface is configured to reflect the light reflected by the first reflective surface;
• the stepped reflective surface is configured to reflect the light reflected by the second reflective surface toward the condenser lens;
• each of the first reflective surface and the second reflective surface is a surface having a curvature in the arrangement direction and having substantially no curvature in the orthogonal direction;
• and
• the curvature of the second reflective surface in the arrangement direction is greater than the curvature of the first reflective surface in the arrangement direction;
• the stepped reflective surface comprises a plurality of stepped surfaces having different heights, each of the plurality of stepped surfaces corresponds to a respective light beam array among a plurality of light beam arrays arranged along the orthogonal direction, and is configured to reflect the respective light beam array;
• and
• each of the plurality of light beam arrays comprises a plurality of the light beams reflected by the second reflective surface and arranged along the arrangement direction.