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