An embedded wiring board includes an upper wiring layer, a lower wiring layer, an insulation layer, a first conductive pillar and a second conductive pillar. During high speed operation, the parallel resistors are switched to ground. A preferred control valve interconnects the supply line with a supply port of the valve to provide the desired pressure at a delivery port. The focal plane array is gated on and off multiple times to integrate signal from all of the pulses. The pitch of the regions where first face of the waveguide is not totally internally reflective is substantially an integer multiple of the pitch of the pixels of the spatial light modulator.