Semiconductor light emitting array with particular surfaces

摘要

A semiconductor light emitting array device including: a substrate having an upper surface and a lower surface; and a plurality of light emitting elements formed on the substrate in a row and isolated from each other by a separating groove. Each element emits light from a side end surface thereof in a direction parallel to the substrate surface. The groove has a portion formed in a direction other than in parallel to the direction of light in a plan view thereof.