The present disclosure discloses a VCSEL array light source, a pattern design method for the VCSEL array light source, a laser projection apparatus, and a three-dimensional (3D) imaging device. The VCSEL array light source includes a semiconductor substrate and a plurality of VCSEL light sources arranged on the semiconductor substrate in a two-dimensional array. The two-dimensional array includes at least one sub-array and is generated by transforming the at least one sub-array.