Abstract:
System and method are described for visualization and for display of remote surface measurement areas by capture of both visible and invisible views of image zones of an identified surface measurement area and the mutual display of visible and infrared views of thermal image zones with temperature indication across a panoramic view of the measured area by video.
Abstract:
A surface plasmon polariton (SPP) pixel structure is provided. The SPP pixel structure includes a coupling structure that couples the probing light into the SPP mode by matching the in-plane wave vector by changing the refractive index of the coupling structure using thermo-optic effects to vary the coupling strength of the probing light into the SPP mode. An absorber layer is positioned on the coupling structure for absorbing incident infrared/thermal radiation being detected.
Abstract:
Remote sensing in an environment having temperatures greater than 300° C., using an optical fiber having a core (10), a cladding (20), and a metallic protective coating (30) on the cladding to protect a surface of the cladding, the cladding having a diameter greater than 150 μm, and a thickness of at least 50 μm. The larger diameter cladding means stress from the metallic protective layer can be reduced, giving lower optical loss and better hydrogen protection. A metal conduit (330) encapsulates the sensing fiber, and a pump evacuates the conduit to reduce hydrogen seepage. Ceramic splice protectors are used. OTDR is used to determine differential loss at different locations along the fiber. A reflective element at the far-end of the fiber eases calibration.
Abstract:
An infrared thermometer includes a probe and an infrared sensor. The probe with an infrared target absorbs thermal radiation to provide a substantially consistent source of infrared radiation and an aperture for preventing contamination of the infrared target while permitting the transmission of thermal radiation to the target. The infrared sensor is configured for sensing infrared radiation from the infrared target. The infrared target is positioned within the probe such that it absorbs thermal radiation that comes from the aperture and thereafter emits thermal radiation to the infrared sensor.
Abstract:
An exemplary heat-distribution sensor includes a base and a number of thermocouples. The base includes a spherical surface and defines a number of receiving holes in the spherical surface. Each thermocouple has a sensing end which is received in a corresponding receiving hole and is configured for sensing heat generated by sunlight rays impinging on the sensing end.
Abstract:
A detector incorporating a laser-doped element that is favorably absorbing to at least a portion of the electromagnetic spectrum, for example in the infra-red range, is used in a light detector article. Readout circuits permitting a detector to operate in a substantial range of the electromagnetic spectrum, including the visual and infra-red range, enable day and night imaging in some embodiments. Configurations for making the detectors are also provided.
Abstract:
Detection and identification of minute quantities of condensed or solid state materials with significantly improved performance over the present state-of-the-art, comprises illuminating a small target particle with an appropriate laser radiation at a wavelength that is strongly absorbed by the target. The resulting temperature rise is observed by monitoring the increased blackbody radiation from the sample. An unambiguous determination of the target compound or the target material composition can be achieved through the use of a tunable laser that generates an absorption fingerprint of the target.
Abstract:
A conformal coherent wideband antenna coupled IR detector array included a plurality of unit cells each having a dimension that includes an antenna for focusing radiation onto an absorber element sized less than the dimension. In one embodiment, the absorber element may be formed of a mercury cadmium telluride alloy. According to a further embodiment, the antenna array may be fabricated using sub-wavelength fabrication processes.
Abstract:
This bolometric detector for electromagnetic radiation comprises: a first and a second crossed bow-tie antenna intended to collect electromagnetic radiation; a resistive load coupled to said antennas in order to convert the collected electromagnetic power into calorific power; a bolometric micro bridge structure suspended above substrate by support and thermal isolation arms with the micro bridge comprising: the resistive load; a thermometric element coupled to resistive load so that its temperature can rise due to the effect of the calorific power produced. The first antenna is located outside micro bridge and is capacitively coupled with the resistive load and the second antenna is located in micro bridge and is resistively coupled with the resistive load.
Abstract:
A thermal-type infrared image sensing device and method of producing a thermal-type infrared image sensing device are provided. The thermal-type infrared image sensing device includes pixel elements that are two-dimensionally arranged on a semiconductor substrate. Each pixel element includes a detector that detects temperature, an infrared-light absorber that absorbs incident infrared light and that converts the light into heat, and a support that supports the detector apart from the semiconductor substrate. The thermal-type infrared image sensing device also includes reference-pixel elements that are arranged adjacent to and along a row of the pixel elements. Each of the reference pixels generates a reference signal, and each of the reference pixels includes a structure that shields a detector from incident infrared light. The detectors of the pixel elements and the reference-pixel elements are each connected to the semiconductor substrate through the respective supports.