| http://www.w3.org/ns/prov#value | - zer system; and a compensator system; being of a design such that in use an incident beam of electromagnetic radiation is caused to impinge upon a side of said at least one said polarizer or compensator system along a propagation direction which is other than perpendicular to a surface of said side thereof and at least partially reflect from said surface of said side or at least partially transmit
|
