Abstract: An optical assembly for three-dimensional image capture includes first and second optical channels that are fixed with respect to one another. Each channel is configured to direct light onto at least a portion of an image sensor. The first and second optical channels each include an aperture for receiving the light, an objective lens for focusing the light into an intermediate image on an intermediate image plane, and an eyepiece lens for collimating the intermediate image.

Abstract: A guidance, navigation and control (GNC) system guides an aircraft based on a special partial differential equation (PDE). The system does not depend on a predetermined desired flight path. To overcome effects of unpredictable wind speed and direction, systems and methods effectively repeatedly determine the worst landing the wind can cause and issue flight control commands that minimize among these worst outcomes. A function C that satisfies the PDE calculates smallest miss distance a guidance system can bring about by appropriately steering an aircraft, given the aircraft's current heading, current location relative to a target and current remaining amount of time to fly. The system repeatedly determines at least a component of a current gradient of the function C. A value of the gradient component is used to select an appropriate flight control command, such as turn left or turn right.

Abstract: A guidance, navigation and control (GNC) system guides an aircraft based on a special partial differential equation (PDE). The system does not depend on a predetermined desired flight path. To overcome effects of unpredictable wind speed and direction, systems and methods effectively repeatedly determine the worst landing the wind can cause and issue flight control commands that minimize among these worst outcomes. A function C that satisfies the PDE calculates smallest miss distance a guidance system can bring about by appropriately steering an aircraft, given the aircraft's current heading, current location relative to a target and current remaining amount of time to fly. The system repeatedly determines at least a component of a current gradient of the function C. A value of the gradient component is used to select an appropriate flight control command, such as turn left or turn right.

Abstract: A computer input device includes, in one embodiment, at least two accelerometers, at least two gyroscopes, and a processor within a housing. Signals from the accelerometers and the gyroscopes are utilized to determine the relative motion of the computer input device.

Abstract: An optical assembly for three-dimensional image capture includes first and second optical channels that are fixed with respect to one another. Each channel is configured to direct light onto at least a portion of an image sensor. The first and second optical channels each include an aperture for receiving the light, an objective lens for focusing the light into an intermediate image on an intermediate image plane, and an eyepiece lens for collimating the intermediate image.

Abstract: A computer input device includes, in one embodiment, at least two accelerometers, at least two gyroscopes, and a processor within a housing. Signals from the accelerometers and the gyroscopes are utilized to determine the relative motion of the computer input device.