The shutter 69 prohibits or cuts off a portion of light rays converged in the vicinity of the focus of {HEAD ~ the projection lens} 68 which is unnecessary for {TAIL ~ the formation} of a light distribution pattern 
is unnecessary for
The shutter 69 prohibits or cuts off a portion of light rays converged in the vicinity of the focus of { HEAD ~ the projection lens } 68 which is unnecessary for { TAIL ~ the formation } of a light distribution pattern
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH