A laser projector including a cooling system having an internal wall dividing the housing into a first compartment containing the optical components and a second compartment containing the electrical components, wherein the internal wall has a first face receiving the optical components and a second face receiving the electrical components thermally isolated from the first face. The internal wall includes a cooling channel and a fan directs air through the channel to maintain the optical components below a maximum operating temperature. The internal wall in one disclosed embodiment includes two parallel wall members each having a plurality of parallel channels, a thermoelectric cooling element located on the wall adjacent the first compartment, a sensor is located in the first compartment and a control maintains a temperature below ambient in the first chamber.