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...http://www.google.de/patents/US5091757?utm_source=gb-gplus-sharePatent US5091757 - Semiconductor light emitting array with particular surfaces
