It should be noted that the concept of imparting {HEAD ~ motion} to {TAIL ~ a solid state image sensor} using piezoelectric elements is known 
to
It should be noted that the concept of imparting { HEAD ~ motion } to { TAIL ~ a solid state image sensor } using piezoelectric elements is known
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH