| 摘要 |
Disclosed is an optical for directing radiant energy comprising a pyramidal prism having energy reflective side surfaces. These side surfaces diverge from an imaginary apex on a central axis equidistant from the side surfaces. Within the prism is a pyramidal reflector whose apex is also on the central axis. The reflector has reflective side surfaces faced toward the prism side surfaces, the reflector's side surfaces diverging from the central axis at a different angle than do the prism side surfaces. One embodiment of the optical device creates several relatively concentrated, polarized energy beams from a relatively unconcentrated, unpolarized energy beam.
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