Optical: systems and elements – Diffraction – From grating
Reexamination Certificate
2007-02-28
2008-09-23
Assaf, Fayez G (Department: 2872)
Optical: systems and elements
Diffraction
From grating
C359S576000, C359S566000
Reexamination Certificate
active
07428100
ABSTRACT:
A beam steering system having first diffraction gratings, each one being associated with a corresponding one of a first plurality of grating vectors disposed substantially in a first plane. The gratings diffract optical energy from any one of a plurality of input directions of resonance to a corresponding one of a plurality of output directions. Second diffraction gratings are associated with a second plurality of grating vectors disposed substantially in a second plane. Each one of the second gratings diffracts optical energy from any one of a plurality of input directions of resonance to a corresponding one of a plurality of output directions. An arrangement directs a beam of optical energy to a selected one of the first gratings along a selected one of the plurality of input directions for the selected one of the first gratings, selected to provide the corresponding one of the output directions from the first gratings to be substantially equal to a selected one of the plurality of input directions for the selected one of the second gratings, thereby providing a selectable set of beam output directions.
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Holz Michael Karl Oskar
Smith Irl W.
Assaf Fayez G
Daly, Crowley & Mofford & Durkee, LLP
Raytheon Company
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