| http://www.w3.org/ns/prov#value | - A hologram optical system as set forth in claim 30, further satisfying the following relationships: -U+V'+W'=0 V'={l4 /(l3 -l4)2 /2} cos 2 (τ+δ)-{l3 /(l3 -l4)2 } sin γ sin δ cos (γ+δ)/cos 2 δ W'=-{l3 /(l3 -l4)2 } cos (γ+δ)/cos 2 δ {sin β sin γ-l3 /(2l2) cos 2 β cos (γ+δ)} where l2 is a distance on an optical axis from a lig
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