Method of producing a therapeutic laser or LED device (TLD). The TLD includes flexible membranes which comprise a high pressure air cavity. High air pressure is produced by fans which are computer speed controlled. Standoff posts provide a separation function between the TLD and the patient. Semiconductor laser diodes and lens sets or LEDs and lens sets in a two dimensional array produce the therapeutic light. Cooling air tubes direct air controlled by temperature sensors from the high pressure cavity onto laser diodes or LEDs. Capacitive proximity sensors in conjunction with infrared radiation sensors confirm close contact with a patient and allow light radiation. Power is supplied either by battery or by connection to mains power. A wireless touch screen device displays information to the user and controls the therapy session. The TLD and the power supply both have stretchable straps enabling the TLD to be fixed to the patient.