The polarization direction of S polarized light can be defined by the optical axis of the illumination optical system and the polarization split {HEAD ~ film} as {TAIL ~ the S polarization direction} 
as
The polarization direction of S polarized light can be defined by the optical axis of the illumination optical system and the polarization split { HEAD ~ film } as { TAIL ~ the S polarization direction }
OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL