A projection apparatus is formed employing a solid state light source having either an associated or integrated sensor to monitor a thermal condition of a region of the solid state light source. A temperature correction value for adjusting a temperature within the thermal plate can be set for each of the thermal plate regions of the thermal plate. The liquid crystal cells belonging to the first liquid crystal cell group are successively charged to the data voltage of the same polarity during three or more frame periods at intervals of a predetermined time equal to or longer than two frame periods. The flexible member allows a sensor to be horizontally and vertically positioned relative to the sensor system housing. The assembly for converting NOx to N2 preferably includes a selective catalytic reduction unit containing a catalyst, and wherein converting NOx to N2 includes reacting the NOx with the catalyst to produce N2 and H2O. Increasing the overdrive voltage increases the efficiency of the amplifier by decreasing the difference between the maximum swing of the output voltage and the voltage supply rails of the at least one on-chip FET relative to conventional designs.