By adjusting the shape of the shutter 69, location of {HEAD ~ a cut off line} of {TAIL ~ the light distribution pattern} can be adjusted 
of
By adjusting the shape of the shutter 69 , location of { HEAD ~ a cut off line } of { TAIL ~ the light distribution pattern } can be adjusted
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH