A second embodiment of the present invention is provided for overcoming the above problems of the first embodiment and includes {HEAD ~ structural components} for providing {TAIL ~ a feature} of Spot Wobble Defocus 
for providing
A second embodiment of the present invention is provided for overcoming the above problems of the first embodiment and includes { HEAD ~ structural components } for providing { TAIL ~ a feature } of Spot Wobble Defocus
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 REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH