Risley integrated steering module

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element

Reexamination Certificate

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Details

C359S211100, C359S209100, C359S837000

Reexamination Certificate

active

07898712

ABSTRACT:
A Risley integrated steering module is disclosed. The beam steering device consists of an outer assembly rotatable about an axis, and an inner assembly rotatable about the axis and positioned radially within the outer assembly. The beam steering device also includes a first prism connected to the outer assembly and a second prism connected to the inner assembly, and a stationary assembly, with the outer and inner assemblies being rotatable about the portion of the stationary assembly. In an alternative embodiment, the inner assembly rotates within the stationary assembly. The beam steering device also consists of beam expansion optics carried by either the inner assembly or the stationary assembly.

REFERENCES:
patent: 5201895 (1993-04-01), Grosso
patent: 6343767 (2002-02-01), Sparrold et al.
patent: 7236299 (2007-06-01), Smith
patent: 7336407 (2008-02-01), Adams et al.
Risley-Prism Based Compact Laser Beam Steering for IRCM, Laser Communications, and Laser Radar; Schwarze et al.; Critical Technology, Sep. 2005.
A New Look at RISLEY Prisms; Schwarze; Photonics Spectra, Jun. 2006.
Risley Prism Beam Pointer; Ostaszewski et al; Free-Space Laser Communications VI, Proc. Of SPIE vol. 66304, (2006).
Design of adaptive Fiber Optics Collimator for Free-Space Communication Laser Transceiver; Beresnev et al.; Target-in-the-Loop: Atmospheric Tracking, Imaging, and Compensation II, Proceedings of SPIE; vol. 5895 (2005).

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