As shown in FIG 7, {HEAD ~ the number} of {TAIL ~ the light focus} means 16 is represented by N, which is equal to the total light points generated in every revolution 
As shown in FIG 7 , { HEAD ~ the number } of { TAIL ~ the light focus } means 16 is represented by N , which is equal to the total light points generated in every revolution
OTH OTH OTH OTH OTH OTH 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