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