| 摘要 |
<p>An optical system having a polarization beam separator (112) for receiving an input beam and separating the input beam into a first component that propagates along a first path (124) and a second component a polarization opposite that of the first component and propagates along a second path (126) which is spatially separated from the first path, a polarization changer (114) provided in the first path for changing the polarization of the first component to the same polarization as the second component to and a redirecting optical subsystem (101) including a lens (118) and a mirror (120) for receiving the first and second components and redirecting the first component back in superposition along the second path and the second component back in superposition along the first path.</p> |
