fans 220 and 230 two heat sinks 250 and 260 and an arc lamp 240 the two cooling fans 220 and 230 are mounted side by side to each other on the back of the frame 210 the first cooling fan 220 is coupled to the back of the arc lamp 240 closer to a first side of the arc lamp 240 the second cooling fan 230 is coupled to the back of the arc lamp 240 closer to a second side of the arc lamp 240 the two sides of the arc lamp 240 are opposite to each other in one embodiment the first heat sink 250 is coupled laterally to the first side of the arc lamp 240 while the second heat sink 260 is coupled laterally to the second side of the arc lamp 240 since heat generated during operation of the arc lamp 240 is typically transferred from the sides of the arc lamp 240 the heat sinks 250 and 260 on the sides of the arc lamp 240 may effectively cool off the arc lamp 240 furthermore the cooling fans 220 and 230 cause air to circulate more efficiently through the heat sinks 250 and 260 respectively and hence help to cool off the arc lamp 240 faster by mounting the heat.