Techniques are disclosed for systems and methods to provide reliable analyte spatial detection systems. An analyte spatial detection system includes an imaging module, a visible light projector, associated processing and control electronics, and, optionally, orientation and/or position sensors integrated with the imaging module and/or the visible light projector. The imaging module includes sensor elements configured to detect electromagnetic radiation in one or more selected spectrums, such as infrared, visible light, and/or other spectrums. The visible light projector includes one or more types of projectors configured project visible light within a spatial volume monitored by the imaging module. The system may be partially or completely portable and/or fixed in place. The visible light projector is used to indicate presence of a detected analyte on a surface near or adjoining the spatial position of the detected analyte.

Systems for adjusting for irregular movement during spectral imaging are provided herein. Exemplary systems include: a spectrograph measuring a plurality of spectrographic data sets; a camera capturing images, a processor communicatively coupled to the spectrograph and the camera; and a memory coupled to the processor, the memory storing instructions executable by the processor to perform a method comprising: receiving a plurality of spectrographs for a series of respective locations and the images corresponding to the respective locations; generating a continuous image using the images; identifying a respective corresponding position in the continuous image for each spectrograph, such that each spectrograph is a measurement of the respective position; and associating each spectrograph with the respective position.

Pressure variations within a solid propellant rocket motor produce like variations in the optical radiance of the motor exhaust plume. The periodicity of the variation is related to the length L of the rocket motor or speed of sound in the rocket motor combustion chamber to length ratio a/L. The optical radiance is collected and converted to electrical signals that are sampled at or above the Nyquist rate. An array of single-pixel photo detectors is well suited to provide amplitude data at high sample rates. The sampled data from the one or more detectors is assembled to form a high fidelity time sequence. A window of sampled data is processed to form a signal frequency spectrum. The mode structure in the frequency spectrum is related to the rocket motor length or speed of sound in the rocket motor chamber to length ratio. The rocket motor length or speed of sound to length ratio is used alone or in combination with other information to either classify or identify the rocket motor.

Devices, systems, and methods are provided for enhanced multispectral sensor calibration. A device may include a first layer having copper, a second layer having solder material, the second layer above the first layer, and a third layer having a white silkscreen material, the third layer above the second layer. Regarding the device, the first layer may be used for calibration of a thermal sensor, the second layer may be used for calibration of an image sensor and calibration of a light detection and ranging (LIDAR) sensor, and the third layer may be used for the calibration of the image sensor and the calibration of the LIDAR sensor.

An optical filter element for devices for converting spectral information into location information, uses a connected detector for detecting signals The element has at least two microresonators, each comprising at least two superposed reflective layer structures of a material layer having a high refractive index and a material layer having a low refractive index in an alternating sequence, and at least one superposed resonance layer arranged between the two superposed reflective layer structures. The filter element comprises at least one transparent plane-parallel substrate for optically decoupling the two microresonators; the first microresonator being located on a first of two opposing surfaces of said substrate, and the second microresonator being located on said substrate on a second surface thereof that lies opposite the first surface. The resonance layer of at least one microresonator, and/or the reflective layer structure that surrounds said resonance layer, has a layer thickness which can vary along a horizontal axis of said filter element.

Apparatus for determining a property of products, in particular plant or animal products, the apparatus comprising: a conveyor configured for conveying products one-by-one along a transport path in a transport direction; a light source configured for illuminating a first illumination area of the transport path, wherein the first illumination area extends substantially across the transverse width of the transport path; and a sensor structure configured for receiving light from a sensing area of the transport path, wherein the sensing area extends substantially across the transverse width of the transport path, wherein the sensing area is adjacent to the first illumination area.

A spectrometer is provided. In one implementation, for example, a spectrometer comprises an excitation source, a focusing lens, a movable mirror, and an actuator assembly. The focusing lens is adapted to focus an incident beam from the excitation source. The actuator assembly is adapted to control the movable mirror to move a focused incident beam across a surface of the sample.

Described herein is a spectrometer device. The spectrometer device is configured for determining at least one spectral or spectroscopic information of at least one object. The spectrometer device is configured for determining intensities of constituent wavelength signals of at least one light beam propagating from the object to the spectrometer device. The spectrometer device includes at least one distance detector configured for determining at least one distance information about a distance between at least one object and the spectrometer device, at least one pixelated imaging detector configured for determining at least one image of the object, and at least one evaluation device configured for determining at least one material information of the object by evaluating of at least one image of the object determined by the pixelated imaging detector. The evaluation device is configured for performing at least one spectroscopic analysis of the determined intensities of constituent wavelength signals.

A spectrometric method includes illuminating a target object with measurement light from a light source; receiving with a plurality of two-dimensionally-arranged pixels transmitted light or diffused reflected light output from the target object as a result of being irradiated with the measurement light; acquiring spectral data of each of a plurality of unit regions including at least one unit region and a unit region adjacent to the one unit region on the target object; and calculating spectral data of the target object by averaging the spectral data of the plurality of unit regions. Furthermore, a spectrometric device captures an image of the same unit region of the target object a plurality of times (twice or more) and calculates the spectral data of the target object by integrating and averaging a plurality of times' worth of spectral data obtained at each of the image-captured unit regions of the target object.

The invention is directed to a hyperspectral/multispectral system referred to as the OxyVu-1 system. The hyperspectral imaging technology performs spectral analysis at each point in a two-dimensional scanned area producing an image displaying information derived from the analysis. For the OxyVu-1 system, the spectral analytical methods determined in superficial tissues approximate values of oxygen saturation (HT-Sat), oxyhemoglobin levels (HT-Oxy), and deoxyhemoglobin levels (HT-Deoxy). The OxyVu-1 system displays the tissue oxygenation in a two-dimensional, color-coded image. The system contains a system console, a cart, system electronics, CPU, monitor, keyboard, pointing device and printer. The hyperspectral instrument head with support arm contains broadband illuminator, camera and spectral filter for collecting hyperspectral imaging cube. The single use OxyVu Check Pads and Targets are used to perform an instrument check prior to patient measurements. The OxyVu Target is placed within the intended field of view and is used as a fiduciary mark for image registration and for focusing.