The shutter 69 is located in {HEAD ~ 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 
The shutter 69 is located in { HEAD ~ 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
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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