Bae Systems Information and Electronic Systems Integration Inc.

David E Thompson

Gerard J Pelletier

Michael J Shaw

Glenn L Sindledecker

Adam J Marcinuk

Kevin W Peters

The system and method for cooling a laser using a split liquid cooled heat exchanger. The temperature of coolant entering the system is applied to a portion of the system most in need of lower temperatures and a second heat exchanger uses the outflow from the first heat exchanger to cool a remaining portion of the system that has a tolerance for higher temperatures. The laser cooling system is compact, e.g., less than 45 cubic inches and can handle thermal loads of about 800 W.

Split liquid cooled heat exchanger with thermoelectric cooling controlled temperature

An athermalized Short-Wave InfraRed (SWIR) telephoto lens for a tracking camera having, in order, from a remote object to an image plane an aperture stop, a first optical element having a first element first surface radius of 23.21 mm, a first element second surface radius of 46.25 mm, a second optical element having a second element first surface radius of 22.72 mm, a second element second surface radius of 45.58 mm, a third optical element having a third element first surface radius of &#x2212;56.85 mm, a third element second surface radius of 16.65 mm, where the lens is corrected over a spectral waveband of 1.5 &#x3bc;m to 1.6 &#x3bc;m from &#x2212;10 C to +65 C, has a length from the first element to the camera of 88 mm, has a telephoto ratio of 0.367, has an F# of 24, and has a focal length of 240 mm.

Athermalized infrared telephoto camera lens for tracking cameras

A temperature insensitive locking apparatus for use with large optical mounts having at least one locking nut having an internal threaded portion adjacent to an internal tapered portion, at least one flexurized spring collet attached to a rigid base structure having an external threaded portion and a plurality of tapered flexures, a pivot shaft engaged with an optical yoke on a rotational axis of symmetry wherein when the internal threads of the locking nut engage with the external threads of the flexurized spring collet an increased level of a radial clamping force is provided around the pivot shaft.

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Nashua, NH, United States of America

David E Thompson