An apparatus comprises: a first narrow bandwidth electromagnetic wave filter, a second narrow bandwidth electromagnetic wave filter, and an electromagnetic wave dispersive filter. The first narrow bandwidth electromagnetic wave filter is configured to: convert a wide bandwidth signal to a first monochromatic signal; and direct the first monochromatic signal to at least one first pixel. The second narrow bandwidth electromagnetic wave filter is configured to: convert the wide bandwidth signal to a second monochromatic signal; and direct the second monochromatic signal to at least one second pixel. The electromagnetic wave dispersive filter is configured to: convert the wide bandwidth signal to a spatially distributed wide bandwidth spectrum; and direct the spatially distributed wide bandwidth spectrum to third pixels.

A calibration device receives at least a first multispectral measurement of: a first monochromatic signal taken at a first pixel location; a second multispectral measurement of a second monochromatic signal taken at a second pixel location; and a multiplicity of third multispectral measurements of a spatially distributed wide bandwidth dispersed spectrum, of a wide bandwidth signal, taken at a multiplicity of third pixel locations. The device relates known pixel values of wavelengths to pixel values of measured wavelengths. The device outputs spectrum wavelength and power calibration values for the multispectral imaging system, comprising at least a relation of: a first third pixel location to a first known wavelength; and a second third pixel location to a second known wavelength.

An ultra-small thermal imaging core, or micro-core. The design of the micro-core may include substrates for mounting optics and electronic connectors that are thermally matched to the imaging Focal Plane Array (FPA). Test fixtures for test and adjustment that allow for operation and image acquisition of multiple cores may also be provided. Tooling may be included to position the optics to set the core focus, either by moving the lens and lens holder as one or by pushing and/or pulling the lens against a lens positioning element within the lens holder, while observing a scene. Test procedures and fixtures that allow for full temperature calibration of each individual core, as well as providing data useful for uniformity correction during operation may also be included as part of the test and manufacture of the core.

Temperature detection systems and methods for detecting temperature of an object are provided. The system utilizes either a predetermined temperature reference by using a well-behaved and calibrated thermal camera with reliable internal temperature reference calibration or one or more calibrated temperature reference devices, such as a blackbody reference, in view of the camera. The system then determines temperature values for each pixel within the image based on mean and median reference temperatures determined from the predetermined temperature reference or the calibrated temperature reference devices and identifies any pixels in the image having a predetermined characteristics, such as those pixels having a temperature greater than the predetermined reference temperature or some other threshold, or, alternatively, pixels in a range of temperatures.

Temperature detection systems and methods for detecting temperature of an object are provided. The system utilizes either a predetermined temperature reference by using a well-behaved and calibrated thermal camera with reliable internal temperature reference calibration or one or more calibrated temperature reference devices, such as a blackbody reference, in view of the camera. The system then determines temperature values for each pixel within the image based on mean and median reference temperatures determined from the predetermined temperature reference or the calibrated temperature reference devices and identifies any pixels in the image having a predetermined characteristics, such as those pixels having a temperature greater than the predetermined reference temperature or some other threshold, or, alternatively, pixels in a range of temperatures.

A calibration device receives at least a first multispectral measurement of: a first monochromatic signal taken at a first pixel location; a second multispectral measurement of a second monochromatic signal taken at a second pixel location; and a multiplicity of third multispectral measurements of a spatially distributed wide bandwidth dispersed spectrum, of a wide bandwidth signal, taken at a multiplicity of third pixel locations. The device relates known pixel values of wavelengths to pixel values of measured wavelengths. The device outputs spectrum wavelength and power calibration values for the multispectral imaging system, comprising at least a relation of: a first third pixel location to a first known wavelength; and a second third pixel location to a second known wavelength.

The disclosed MMW wave sensing camera calibration arrangement that generally includes a millimeter wave camera that uses an energy emission calibration panel as a calibration standard. The MMW camera is positioned opposite the calibration panel in the MMW camera's field-of-view. The calibration panel is held at a constant temperature to provide a standard emission of millimeter waves that is sensed by an MMW sensor to set or otherwise calibrate the MMW camera to a baseline emissivity value corresponding to the panel. The MMW camera is linked to a microprocessor and non-transient computer memory containing a calibration routine that is configured to reset the baseline only when nothing obstructs the calibration panel's field-of-view. A visual display is linked to the MMW camera and configured to display an MMW signature of a metal object that is disposed on a person's body when the person's body is in the field-of-view, the metal object concealed by clothing worn over the person's body.

Various embodiments disclosed herein describe an infrared (IR) imaging system for detecting a gas. The imaging system can include an optical filter that selectively passes light having a wavelength in a range of 1585 nm to 1595 nm while attenuating light at wavelengths above 1600 nm and below 1580 nm. The system can include an optical detector array sensitive to light having a wavelength of 1590 that is positioned rear of the optical filter.

A temperature detection system includes a housing, a thermal imaging system at least partially disposed within the housing, an arm operably coupled with and extending from the housing, and a reference illumination system operably coupled with the arm. The thermal imaging system is adapted to capture at least one thermal image of a subject. The reference illumination system includes a substrate having at least one reference calibration unit operably coupled therewith such that the substrate is at least partially constructed from a solid metal embedded therein. The at least one reference calibration unit is visible to the thermal imaging system.

Various techniques are disclosed for providing a device attachment configured to releasably attach to and provide infrared imaging functionality to mobile phones or other portable electronic devices. The device attachment may include an infrared imagining module and a non-thermal imaging module that cooperate with one or more of a non-thermal imaging module in an attached device and a light source in the attached device for capturing and processing images.