{HEAD ~ The shutter} 69 is located in a light passageway from {TAIL ~ the light bulb} 61 to the projection lens 68, preferably in the vicinity of a focus of the projection lens 68 
{ HEAD ~ The shutter } 69 is located in a light passageway from { TAIL ~ the light bulb } 61 to the projection lens 68 , preferably in the vicinity of a focus of the projection lens 68
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH