Abstract: Switchless sensing is provided to control electronic devices of the type associated with deterrent devices.

Abstract: An example tracking signal device comprises a housing and a light source disposed within the housing. A window is defined within the housing optically downstream of the light source. The device further comprises a sensor configured to receive a first beam of radiation and a controller operably coupled to (i) the light source and (ii) the sensor. The controller is configured to control the light source to emit a second beam of radiation based at least in part on receipt of the first beam of radiation by the sensor.

Abstract: A system for use in identifying a user includes a portable emitter transported with the user. The emitter includes a quantum cascade laser configured to emit a thermal beam identifying a location of the user in response to a command, the thermal beam having a wavelength between approximately 2 ?m and approximately 30 ?m.

Abstract: Switchless sensing is provided to control electronic devices of the type associated with deterrent devices.

Abstract: A system for use in identifying one of an unmanned ground vehicle and an unmanned aerial vehicle includes a signal emitter associated with the unmanned vehicle. The signal emitter includes at least one quantum cascade laser. The signal emitter emits a signal having a wavelength between approximately 2 ?m and approximately 30 ?m, and the signal is detectable to identify the unmanned vehicle as friendly at a distance from the signal emitter greater than approximately 1 meter.

Abstract: A system for use in identifying a user includes a portable emitter transported with the user. The emitter includes a quantum cascade laser configured to emit a thermal beam identifying a location of the user in response to a command, the thermal beam having a wavelength between approximately 2 ?m and approximately 30 ?m.

Abstract: A beacon system includes a controller, a laser module operably connected to the controller, and at least one sensor operably connected to the controller. In such a system, the controller is configured to receive a signal from the at least one sensor, and to determine whether a response to the signal is required.

Abstract: A system for interacting with a thermal detector includes at least one unmanned aerial vehicle and a sensor mounted to the at least one unmanned aerial vehicle. The sensor is configured to determine the presence of a component of the thermal detector and to generate a signal indicative of the presence of the component. The system also includes a beam emitter mounted to the at least one unmanned vehicle and in communication with the sensor. The beam emitter includes a beam source configured to direct a beam of thermal radiation to the thermal detector in response to the signal from the sensor.

Abstract: A system for use in identifying one of an unmanned ground vehicle and an unmanned aerial vehicle includes a signal emitter associated with the unmanned vehicle. The signal emitter includes at least one quantum cascade laser. The signal emitter emits a signal having a wavelength between approximately 2 ?m and approximately 30 ?m, and the signal is detectable to identify the unmanned vehicle as friendly at a distance from the signal emitter greater than approximately 1 meter.

Abstract: Switchless sensing is provided to control electronic devices of the type associated with deterrent devices.

Abstract: A system for interacting with a thermal detector includes at least one unmanned aerial vehicle and a sensor mounted to the at least one unmanned aerial vehicle. The sensor is configured to determine the presence of a component of the thermal detector and to generate a signal indicative of the presence of the component. The system also includes a beam emitter mounted to the at least one unmanned vehicle and in communication with the sensor. The beam emitter includes a beam source configured to direct a beam of thermal radiation to the thermal detector in response to the signal from the sensor.

Abstract: A system for use in identifying a user includes a portable emitter transported with the user. The emitter includes a quantum cascade laser configured to emit a thermal beam identifying a location of the user in response to a command, the thermal beam having a wavelength between approximately 2 ?m and approximately 30 ?m.

Abstract: A system for interacting with a thermal detector includes at least one unmanned aerial vehicle and a sensor mounted to the at least one unmanned aerial vehicle. The sensor is configured to determine the presence of a component of the thermal detector and to generate a signal indicative of the presence of the component. The system also includes a beam emitter mounted to the at least one unmanned vehicle and in communication with the sensor. The beam emitter includes a beam source configured to direct a beam of thermal radiation to the thermal detector in response to the signal from the sensor.

Abstract: Accessories for a deterrent device having an accessory mounting projecting from a support by a mounting projection distance along a mounting projection axis are provided. In one aspect, an accessory has an electronics module having an electronic system and a mounting portion adapted to engage to the accessory mounting with the mounting portion extending along the mounting projection axis by an accessory lateral projection distance when engaged to the accessory mounting and with the mounting portion positioning the electronics module so that the electronics module to extends along an axis parallel to the orthogonal axis by a lateral extent and is positioned by the mounting adjacent to the accessory mounting with the mounting portion having an accessory mounting projection distance is less than the projection mounting projection distance.

Abstract: A beacon system includes a controller, a laser module operably connected to the controller, and at least one sensor operably connected to the controller. In such a system, the controller is configured to receive a signal from the at least one sensor, and to determine whether a response to the signal is required.

Abstract: Switchless sensing is provided to control electronic devices of the type associated with deterrent devices.

Abstract: A system for use in identifying one of an unmanned ground vehicle and an unmanned aerial vehicle includes a signal emitter associated with the unmanned vehicle. The signal emitter includes at least one quantum cascade laser. The signal emitter emits a signal having a wavelength between approximately 2 ?m and approximately 30 ?m, and the signal is detectable to identify the unmanned vehicle as friendly at a distance from the signal emitter greater than approximately 1 meter.

Abstract: A system for interacting with a thermal detector includes at least one unmanned aerial vehicle and a sensor mounted to the at least one unmanned aerial vehicle. The sensor is configured to determine the presence of a component of the thermal detector and to generate a signal indicative of the presence of the component. The system also includes a beam emitter mounted to the at least one unmanned vehicle and in communication with the sensor. The beam emitter includes a beam source configured to direct a beam of thermal radiation to the thermal detector in response to the signal from the sensor.

Abstract: Aiming systems are provided for use with a particle projection device. Such aiming systems may have a housing mountable to the particle projection device for movement therewith, a window defining a field of view when in a first orientation and a second field of view when in a second orientation. A first reticle image is visible in the window when the housing and particle projection device are at the first orientation with the first reticle image representative of a projection path of the particles in the first field of view. A second reticle image is visible in the window when the housing and particle projection device are at the second orientation with the second reticle image being representative of a projection path of the particles in the second field of view.

Abstract: A system for use in identifying one of an unmanned ground vehicle and an unmanned aerial vehicle includes a signal emitter associated with the unmanned vehicle. The signal emitter includes at least one quantum cascade laser. The signal emitter emits a signal having a wavelength between approximately 2 ?m and approximately 30 ?m, and the signal is detectable to identify the unmanned vehicle as friendly at a distance from the signal emitter greater than approximately 1 meter.