In the present invention, the sensor readout includes {TAIL ~ optics} for producing {HEAD ~ an interference fringe pattern} to impinge upon a pair of photodetectors 
In the present invention , the sensor readout includes { TAIL ~ optics } for producing { HEAD ~ an interference fringe pattern } to impinge upon a pair of photodetectors
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH