The illumination optical system also illuminates the reflective liquid crystal display device with light from {HEAD ~ the light source} via the polarization beam splitter and {TAIL ~ the quarter wave plate} 
via
The illumination optical system also illuminates the reflective liquid crystal display device with light from { HEAD ~ the light source } via the polarization beam splitter and { TAIL ~ the quarter wave plate }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL