Abstract: Various embodiments of the present disclosure may include a device having a housing and a lens element configured to pass thermal radiation received from an external environment. The lens element may be an outer surface of the housing exposed to the external environment through an aperture in the housing. The device may also include a focal plane array within the housing and configured to receive the thermal radiation passed by the lens element. The device may further include a heater in thermal contact with the lens element and a controller configured to selectively operate the heater to maintain the lens element within a desired temperature range.

Abstract: Techniques are disclosed for systems and methods to provide automatic and substantially continuous calibration for compasses mounted to moving structures. A compass calibration system may include a logic device configured to receive one or more sensor signals and determine a corrected magnetic field based, at least in part, on a measured local magnetic field. The logic device may be adapted to receive an angular velocity, an acceleration, the measured local magnetic field, and/or a speed of a mobile structure; generate stabilized roll and pitch components of an orientation of the mobile structure based, at least in part, on the acceleration and angular velocity; and determine the corrected magnetic field based, at least in part, on the speed, the local magnetic field, the stabilized roll and pitch components, and/or the angular velocity.

Abstract: A bolometer circuit may include an active bolometer configured to receive external infrared (IR) radiation and a resistive load, which are configured to be connected in series in a bolometer conduction path from a supply voltage node to a common voltage node. A node in the bolometer conduction path between the resistive load and the active bolometer is coupled to a first input of an op-amp. A variable voltage source is coupled to a second input of the op-amp to provide a reference voltage level. The op-amp maintains the reference voltage level at the first input to generate a current flow in response to a resistance change of the active bolometer due to the external IR radiation. The amplifier circuit may be configured as a feedback amplifier or an integrating amplifier. The bolometer circuit may be configured to enable a low-power mode of operation.

Abstract: Techniques are disclosed for systems and methods to provide augmented reality sonar imagery for mobile structures. An augmented reality sonar imagery system includes a portable imaging device, a sonar transducer assembly, and a logic device in communication with the sonar transducer assembly and the portable imaging device. The sonar transducer assembly is adapted to be mounted to a mobile structure and placed in a body of water, and the portable imaging device includes a display and an imager position and/or orientation sensor. The logic device is configured to determine a waterline of the body of water relative to a field of view of the display and render sonar data in a portion of the field of view that extends below the waterline. Subsequent user input and/or the sonar data may be used to adjust a steering actuator, a propulsion system thrust, and/or other operational systems.

Abstract: Various embodiments of the present disclosure may include an imaging system with an optical device. The optical device may include a cam tube and a lens cell. The lens cell may be pre-loaded and centered within the cam tube by a plurality of springs and a plurality of bearings. The bearings may form a bearing surface to allow the lens cell to translate within the cam tube. The bearing may include a connector that stabilizes the bearing. The connector may allow for smoother translation of the lens cell within the cam tube.

Abstract: Various embodiments of the present disclosure may include a focal plane array configured to capture thermal image data from a scene. The embodiments may further include a sensor window displaced a first distance from the focal plane array. The embodiments may also include a protective window displaced a second distance greater than the first distance from the focal plane array, wherein the second distance causes damage or debris incident on the protective window to be out of focus in the thermal image data.

Abstract: Techniques are disclosed for measurement devices and methods to obtain measurements of various physical parameters in an integrated manner. For example, according to one or more embodiments, a measurement device includes a housing configured to be hand-held by a user; a light sensor configured to sense light and generate a signal in response; a logic device configured to process the signal from the light sensor to determine an intensity of the light, the logic device being further configured to receive and process another signal to determine a magnitude of a physical parameter associated with an external article; and a display configured to present information representing the intensity of the light and the magnitude of the physical parameter. Such a measurement device may be conveniently carried and utilized by electricians or other users, for example, to perform lighting installation or retrofitting without a need for multiple different devices.

Abstract: Systems and methods for an image-assisted remote control vehicle are provided. An image-assisted remote control system may include a motion controlled device such as an image-assisted remote control vehicle and a remote control device. The motion controlled device may include one or more imaging modules, such as a thermal imaging module and/or a non-thermal imaging module. An infrared image of a part of a track may be captured using the infrared imaging module. A boundary of the track may be detected using the infrared image. The operation of the vehicle may be modified based on the boundary. Modifying the operation of the vehicle in this way may provide a remote controlled vehicle with the ease of use of a slot car track set, the flexibility of remote control cars and the ability for a user to design their own track.

Abstract: An infrared detector useful in, e.g., infrared cameras, includes a substrate having an array of infrared detectors and a readout integrated circuit interconnected with the array disposed on an upper surface thereof, for one or more embodiments. A generally planar window is spaced above the array, the window being substantially transparent to infrared light. A mesa is bonded to the window. The mesa has closed marginal side walls disposed between an outer periphery of a lower surface of the window and an outer periphery of the upper surface of the substrate and defines a closed cavity between the window and the array that encloses the array. A solder seal bonds the mesa to the substrate so as to seal the cavity.

Abstract: Systems and methods may be provided for generating reduced-height circuit packages such as infrared detector packages. An alignment and dicing system may include an infrared camera that captures images of alignment marks of a wafer assembly through a lid wafer of the wafer assembly, a light source that illuminates the alignment marks through the lid wafer, and dicing equipment that dices the wafer assembly based on infrared images captured using the infrared camera. The light source may illuminate the alignment marks through the lid wafer by providing light such as infrared light to the wafer assembly through optics of the infrared camera. The infrared camera may capture images of alignment marks formed on a detector wafer of the wafer assembly or on an interior or lower surface of the lid wafer through the lid wafer. The dicing equipment may be aligned with the wafer assembly based on the captured images.

Abstract: Systems and methods according to one or more embodiments are provided for detecting an object in a field of view of an imaging device. An object may be detected by an imaging device when the object is present along a trajectory in a target scene. In one example, a system includes a memory component to store a plurality of images of the target scene and a processor. The processor is configured to define the trajectory between two locations within the target scene and extract a subset of pixel values from each of successive images corresponding to the trajectory. The extracted subsets of pixel values are processed to detect an object within the target scene. Additional systems and methods are also provided.

Abstract: Various embodiments of the present disclosure may include an imaging system that includes a de-icing assembly. The de-icing assembly may include a de-icing window and a window frame. The de-icing window may be constructed from Float Zone Silicon, single crystal sapphire, and/or germanium. The de-icing assembly may be coupled to a lens barrel of a camera. Heat generated by a heater element of the camera may be conducted via the housing and the lens barrel of the camera to the de-icing assembly. The heated de-icing assembly may prevent the formation of ice on the de-icing window by conducting heat to the de-icing window.

Abstract: Various embodiments of the present disclosure may include an imaging system. The imaging system may include a controller that is adapted to determine behavior typical of an object within an environment. The imaging system may additionally monitor the object within the environment and detect when the object behaves anomalously within the environment. Upon detection of anomalous behavior, the controller may output an alarm and/or a response message.

Abstract: Various techniques are provided for implementing an infrared imaging system. In one example, a system includes a focal plane array (FPA). The FPA includes an array of infrared sensors adapted to image a scene. The FPA also includes a bias circuit adapted to provide a bias voltage to the infrared sensors. The bias voltage is selected from a range of approximately 0.2 volts to approximately 0.7 volts. The FPA also includes a read out integrated circuit (ROIC) adapted to provide signals from the infrared sensors corresponding to captured image frames. Other implementations are also provided.

Abstract: Various techniques are provided for an infrared sensor assembly having a hybrid infrared sensor array. In one example, such a hybrid infrared sensor array may include a plurality of microbolometers and a non-bolometric infrared sensor. The non-bolometric infrared sensor may be a thermopile or other type of infrared sensor different from a bolometer-based sensor. The non-bolometric infrared sensor may be utilized to provide a more accurate and stable temperature reading of an object or area of a scene captured by the array. In some embodiments, the non-bolometric infrared sensor may also be utilized to perform a shutter-less radiometric calibration of the microbolometers of the array. An infrared sensor assembly may include, for example, the hybrid infrared sensor array, as well as a substrate including bond pads and/or appropriate circuits to obtain and/or transmit output signals from the non-bolometric infrared sensor.

Abstract: Various embodiments of the present disclosure may include an assembly with a shock detection and disabling device. The shock detection and disabling device may detect when a shock greater than a shock threshold has been experienced by the assembly and disable the assembly. In certain embodiments, the shock detection and disabling device may include a shock detection component connected to an electrical conductor to form an electrical circuit. When a force above a threshold force level and/or profile is detected by the shock detection component, the shock detection component may break the electrical circuit to render the assembly inoperable.

Abstract: An example laser system includes a laser source to transmit a source light generated based on optical feedback provided by a laser cavity. The laser system further includes a beam-splitter to split the source light into a reference light and a split source light. The laser system further includes a modulator to modulate the split source light's frequency. The modulated light may be transmitted towards and reflected from a target. The modulator and beam-splitter may receive, frequency-modulate, and pass the reflected light to the laser cavity. The laser cavity amplifies the reflected light and transmits the amplified light toward the beam-splitter, such that the amplified light follows a same path as the reference light. The laser system further includes a detector to receive the reference light and amplified light, and detect a beating frequency as an indication of presence of the reflected light. Related methods and devices are also disclosed.

Abstract: An imager array may be provided as part of an imaging system. The imager array may include a plurality of infrared imaging modules. Each infrared imaging module may include a plurality of infrared sensors associated with an optical element. The infrared imaging modules may be oriented, for example, substantially in a plane facing the same direction and configured to detect images from the same scene. Such images may be processed in accordance with various techniques to provide images of infrared radiation. The infrared imaging modules may include filters or lens coatings to selectively detect desired ranges of infrared radiation. Such arrangements of infrared imaging modules in an imager array may be used to advantageous effect in a variety of different applications.

Abstract: Systems and methods are provided for detecting overexposure of skin to ultraviolet light. A system may include a thermal imaging module that captures thermal images of a person's skin. Using the thermal images, the system may determine whether the person's skin has been or is being overexposed to ultraviolet light. The system may be a fixed camera system for monitoring an outdoor area, may be a mobile device having a thermal imaging module within or coupled to the mobile device, or may be part of a tanning system having an ultraviolet light source and a thermal imaging module. The overexposure may be detected in a thermal image based on a temperature of the person's skin, a change in the temperature of the person's skin over time or a temperature difference between portions of the person's skin.