The support member may provide {TAIL ~ a compliant fluid seal} and allow {HEAD ~ the edges} of the optical surfaces to pivot, reducing spherical and other aberrations 
The support member may provide { TAIL ~ a compliant fluid seal } and allow { HEAD ~ the edges } of the optical surfaces to pivot , reducing spherical and other aberrations
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH