When {HEAD ~ the optical element} is irradiated to replicate or image {TAIL ~ the patterns} of the optical element, refined patterns can be replicated or imaged 
is irradiated to replicate
When { HEAD ~ the optical element } is irradiated to replicate or image { TAIL ~ the patterns } of the optical element , refined patterns can be replicated or imaged
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH