Abstract: The present invention relates to medical imaging, and in particular a medical imaging detector. In order to improve and facilitate the collection of information, e.g. for medical diagnosis, a medical imaging detector is provided that comprises a first sensor arrangement (12) and a second sensor arrangement (14). The first sensor arrangement is configured to provide a first type of image data belonging to a first imaging modality. The second sensor arrangement is configured to provide a second type of image data belonging to a second imaging modality. The first imaging modality is an X-ray imaging modality, while the second imaging modality is a non-X-ray imaging modality. The first sensor arrangement comprises one or a plurality of first sensor segments (16) arranged within a first circumferential line (18) defining a first imaging area (20).

Abstract: The instant disclosure provides a gas detection device including a chamber module, a light emitting module and an optical sensing module. The chamber module includes a condensing chamber, a receiving chamber and a sampling chamber. The condensing chamber has a first reflecting structure, a second reflecting structure and a third reflecting structure. The first reflecting structure is disposed between the second reflecting structure and the third reflecting structure. The light emitting module is disposed on the condensing chamber and includes a light emitting unit corresponding to the condensing chamber. The optical sensing module includes an optical sensing unit disposed in the receiving chamber.

Abstract: Infrared cameras can include an infrared sensor and an infrared lens assembly defining an optical axis. A camera can include an inner gear engaging the infrared lens assembly and a focus ring that engages the inner gear. The inner gear can engage the focus ring and the infrared lens assembly such that rotation of the focus ring about its central axis can cause the rotation of the infrared lens assembly about its optical axis, which may be offset from the central axis of the focus ring. The camera can include a sensor can threadably engaging the infrared lens assembly and fixed relative to the infrared sensor such that rotation of the infrared lens assembly causes the infrared lens assembly to move relative to the infrared sensor. The sensor can support other components such as a visible light lens assembly or a laser within a perimeter of the focus ring.

Abstract: A coherent anti-stokes Raman scattering apparatus for imaging a sample comprises an optical output; an optical source arranged to generate a first optical signal at a first wavelength; and a nonlinear element arranged to receive the first optical signal, where the nonlinear element is arranged to cause the first optical signal to undergo four-wave mixing on transmission through the nonlinear element such that a second optical signal at a second wavelength and a third optical signal at a third wavelength are generated, wherein an optical signal pair comprising two of the first, second and third optical signals is provided to the optical output for imaging the sample.

Abstract: In the present invention, a high-voltage DC/DC converter suitable for powering x-ray tubes and the like provides control of a voltage applied to a resonant circuit at least in part according to a timing of a monitored voltage on the resonator thereby compensating for variations in the parameter stability of the resonant circuit, nonlinearity in the resonant gain curve and frequency dependencies.

Abstract: Devices and methods for determining the position of a device relative to a person using the device, or the position of a part of a user's body relative to the user. One or more thermal sensor may be used to determine the relative position of the device or part of the user's body.

Abstract: An illumination apparatus for a vehicle is disclosed. The illumination apparatus comprises a wear component comprising a plurality of layers disposed in an engine compartment. The layers comprise a photoluminescent portion and a cover layer disposed over the photoluminescent portion. The apparatus further comprises a light source located in the engine compartment. The light source is configured to emit an excitation emission configured to illuminate the photoluminescent portion to emit an output emission having a color different than the excitation emission.

Abstract: A downhole system in which an agile light source is used to simulate an integrated optical element to measure one or more characteristics of a fluid in a wellbore.

Abstract: The present invention relates to an electrically thin molybdenum thin film absorber coating for a detector, that is capable of absorbing a fraction of incident electromagnetic radiation over a 1-15 THz spectral range.

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 measuring a sensor having two terminals includes first and second transistors with first and second control signal inputs connected to the sensor terminals. The system further includes a current divider including a reference current input, a current divider control input and first and second current outputs connected to the first and second transistors. First and second load circuits are connected to the first and second transistors at first and second differential output nodes. First and second integrating circuits are connected to the first and second differential output nodes. A comparator is driven by first and second differential output nodes. The comparator output controls a digital integrator. A value of a current divider control signal driving the current divider control input depends at least indirectly from the digital integrator.

Abstract: A device is for the spatially resolved measurement of photons, in particular x-ray photons. In an embodiment, the device includes a first plurality of photoelectric converters, a second plurality of current measuring apparatuses and a third plurality of voltage conditioners. Each current measuring apparatus is electrically connected to at least one photoelectric converter; each voltage conditioner is electrically connected to at least one current measuring apparatus; and each photoelectric converter is configured to generate a photocurrent from an incident photon. Each voltage conditioner is connectable to a supply bar, configured to provide a supply voltage. The voltage conditioner is configured to down-convert the supply voltage to an operating voltage of a current measuring apparatus. Each current measuring apparatus is configured to measure a photocurrent under operating voltage when this is generated in a photoelectric converter, electrically connected to the respective current measuring apparatus.

Abstract: One aspect of the invention provides a phantom including a confined fluidic path defining a plurality of regions of monotonically decreasing, discrete cross-sectional dimensions with respect to an imaging plane. Another aspect of the invention provides a method of assessing imaging. The method includes: placing a phantom as described herein within an imaging system; flowing one or more fluids through the phantom; and capturing one or more images of the phantom. Another aspect of the invention provides a kit for assessing imaging. The kit includes a phantom as described herein and instructions for use.

Abstract: There is provided an optical measurement method using a detector having a detection sensitivity to at least a near-infrared region. The optical measurement method including: obtaining an output value by measuring a light sample at any exposure time with the detector; and correcting the output value with an amount of correction corresponding to the output value, when the exposure time at which the output value is obtained is within a second range. The amount of correction includes a product of a coefficient and a square of the exposure time, the coefficient indicating a degree to which an output value obtained when the light sample is measured with the detector at an exposure time within the second range deviates from output linearity obtained when the light sample is measured with the detector at an exposure time within a first range.

Abstract: Various embodiments of a light detection device and a system that utilizes such device are disclosed. In one or more embodiments, the light detection device can include a housing that includes a port disposed in a top surface, a receptacle disposed within the housing and adapted to receive a sample, a detector disposed within the housing along an optical axis and including an input surface having an active area, and a reflector disposed within the housing along the optical axis between the receptacle and the input surface of the detector. The reflector can include an input aperture disposed adjacent the receptacle, an output aperture disposed adjacent the input surface of the detector, and a reflective surface that extends between the input aperture and the output aperture.

Abstract: Systems and methods disclosed herein, in accordance with one or more embodiments provide for imaging gas in a scene, the scene having a background and a possible occurrence of gas. In one embodiment, a method and a system adapted to perform the method includes: controlling a thermal imaging system to capture a gas IR image representing the temperature of a gas and a background IR image representing the temperature of a background based on a predetermined absorption spectrum of the gas, on an estimated gas temperature and on an estimated background temperature; and generating a gas-absorption-path-length image, representing the length of the path of radiation from the background through the gas, based on the gas image and the background IR image. The system and method may include generating a gas visualization image based on the gas-absorption-path-length image to display an output image visualizing a gas occurrence in the scene.

Abstract: A ceramic scintillator array of an embodiment includes: a plurality of scintillator segments each composed of a sintered compact of a rare earth oxysulfide phosphor; and a reflective layer interposed between the scintillator segments adjacent to each other. The reflective layer contains a transparent resin and reflective particles dispersed in the transparent resin. The reflective particles contain titanium oxide and at least one inorganic substance selected from the group consisting of alumina, zirconia, and silica. A glass transition point of the transparent resin is 50° C. or higher, and a thermal expansion coefficient of the transparent resin at a temperature higher than the glass transition point is 3.5×10?5/° C. or less.

Abstract: A method and a system to quantify gas in a thermal imaging device, said method comprising obtaining a gas-absorption-path-length image as a scene difference infrared image based on a gas infrared image and a scene background infrared image substantially depicting the same scene and generating a quantified scene difference infrared image based on said scene difference infrared image and a predefined gas-quantifying relation.

Abstract: A tool can include an X-ray tomography device to evaluate cement in a downhole environment. The X-ray tomography device includes an X-ray beam source configured to transmit an X-ray beam at a first predetermined angle. The beam angle may be set by a capillary device coupled to the X-ray beam source. An energy dispersive, multi-pixel photon detector is configured to count detected backscatter photons received at a second predetermined angle and determine an energy spectrum for the detected photons. A density map of the cement may be generated in response to the number of detected photons. Additional apparatus, systems, and methods are disclosed.

Abstract: A sensor including an optical cavity capable of receiving the gas, and defined by first and second opposite ends and a connecting portion connecting said ends; a light source arranged to emit infrared light in the optical cavity; at least one infrared detector arranged to detect the infrared light; at least one mirror arranged in the optical cavity to guide the infrared light towards said at least one infrared detector; the sensor being remarkable in that it includes first and second reflective elements respectively extending at the first and second ends of the optical cavity, and having an infrared light reflection coefficient greater than or equal to 75% for any angle of incidence.