Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Reexamination Certificate
2004-03-18
2009-06-09
Ben, Loha (Department: 2873)
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
C359S618000, C359S485050, C359S506000, C359S246000, C359S285000, C333S252000, C356S342000, C356S495000, C342S372000
Reexamination Certificate
active
07545570
ABSTRACT:
A system for selectively blocking electromagnetic energy. The system includes a first mechanism for employing a perforated component to pass a beam characterized by a first property and reject a beam characterized by a second property. A second mechanism selectively alters a beam passed by the first mechanism so that upon reflection, the beam exhibits the second property. In a specific embodiment, the first property corresponds to a first polarization, and the second property corresponds to a second polarization. In the specific embodiment, the perforated component includes a beamsplitter having a first perforated metallic plate. The second mechanism includes a quarter-wave plate having a second perforated metallic plate.
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Ben Loha
Gorrie Gregory J.
Raytheon Company
Schwegman Lundberg & Woessner, P.A.
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