A wearable device includes: a base to be worn on a head of a user; a first sensor that is provided to the base to be at a distance from a surface of the user's head and measures a first signal relating to a temperature of the surface of the user's head; an estimation circuit that estimates a body temperature of the user based on the first signal; and a display that presents the body temperature of the user estimated by the estimation circuit.

A method comprises capturing outputs of a VLC and an infrared array sensor (IAS). A memory includes a calibration based on a position of a laser pointer relative to the IAS. The method includes the laser pointer outputting a light beam to produce a laser dot on a target. The output of the VLC includes a representation of the laser dot. The output of the IAS includes values indicative of infrared radiation from the target. The method includes determining a temperature based on a portion of the values indicative of infrared radiation from the target. The portion of the values includes values associated with a portion of the target at which the laser dot is produced. The method includes displaying, on the display, the output of the VLC and the temperature. Displaying the output of the VLC includes displaying a visible light image showing the laser dot and at least a portion of the target.

Infrared imaging devices are provided which are configured to implement side-scan infrared imaging for, e.g., medical applications. For example, an imaging device includes a ring-shaped detector element comprising a circular array of infrared detectors configured to detect thermal infrared radiation, and a focusing element configured to focus incident infrared radiation towards the circular array of infrared detectors. The imaging device can be an ingestible imaging device (e.g., swallowable camera) or the imaging device can be implemented as part of an endoscope device, for example.

A method includes capturing and scaling VLC and an IAS outputs to generate a scaled VLC output and a scaled thermal output (STO), aligning the scaled VLC output to the STO to generate an aligned image based on the scaled VLC output and the STO, determining alignment value(s) based on the aligned image, a laser pointer outputting a light beam to produce a laser dot on a target, and capturing a further output of the VLC. The method includes displaying the further output of the VLC (including a representation of the laser dot (RLD)), and an alignment marker, shifting the alignment marker and/or the RLD to a common position; determining coordinate(s) of the output of the IAS based on coordinate(s) of the further output of the VLC where the alignment marker and the RLD are shown at the common position; and storing the coordinate(s) of the output of the IAS.

In a detecting device, infrared light is emitted by a first source in a detection target space; second light of a wavelength different from the infrared light is emitted by a second source in a direction different from a direction of the infrared light being emitted by the first source. A reflecting section provided in the direction of the second light being emitted reflects the second light. A light receiver receives infrared light emitted by the first source and reflected by the object, and receives infrared light radiating from the object as a result of the object being irradiated with the infrared light emitted by the first source and being irradiated with the second light emitted by the second source and reflected by the reflecting section. A detector detects the object based on the infrared light received by the light receiver.

A sealing system (20) for an optical sensor of a turbine engine that diverts and exhaust seal leakage away from the seal (22, 24) to prevent ingestion of humid air through the seal (22, 24) is disclosed. The sealing system (20) may include inner and outer optical housings (26, 28) with first and second seals (22, 24) positioned there between separating inner and outer optical housings (26, 28) radially. The sealing system (20) may include one or more leakage manifolds (30) positioned between the first and second seals (22, 24) and containing one or more manifold rings (32). The manifold ring (32) may be positioned between and in contact with the first and second seals (22, 24) enabling the first and second seals (22, 24) to form a double seal. The manifold ring (32) may also be configured to capture leakage air that has seeped past the first seal (22) and exhaust that leakage air through one or more exhaust vents (34) in the outer optical housing (28) before leaking through the sealing system (20).

The present invention relates to an externally mounted calibration device and a temperature measurement system using the same. The temperature measurement system calibrates the temperature of the thermal camera using an externally mounted temperature calibration device that is mounted on one side of the outside of the thermal camera unit and includes a temperature measurement substrate with a temperature sensor. The temperature measurement substrate of the externally mounted temperature calibration device is captured simultaneously with the subject to be measured on the screen of the thermal camera, and using the temperature of the temperature measurement substrate measured by the temperature sensor and the temperature of the temperature measurement substrate measured by the thermal camera, the temperature of the subject to be measured by the thermal camera is calibrated, thereby ensuring that the thermal camera always maintains a constant temperature measurement result regardless of the environmental temperature when used.

A holder for a temporal thermometer, having a bracket arranged to hold the thermometer, a lever operatively arranged to depress a button on the thermometer to take a temperature reading, a foot pedal, a cable linking the foot pedal to the lever to activate the thermometer, and a duplex mirror assembly operatively arranged to display the temperature reading.

Methods are provided for determining plant stress, including: using a computer-based camera system having thermal imaging and visual imaging to capture foliage at close proximity of at least one plant to provide high resolution images/video thereof; analyzing both thermal and visual images/video therefrom to form a composite image; determining the thermal activity of the composite image/video and photosynthesis state of the at least one plant; and deriving the plant stress from the determination. A handheld computer-based camera system is also provided and includes a smartphone and thermal imaging device.

A surface temperature measuring method includes: acquiring a radiation light amount of a surface of a measurement object; irradiating the surface of the measurement object with light under a specular reflection condition to acquire a specular reflection light amount; irradiating the surface of the measurement object with light under a diffuse reflection condition to acquire a diffuse reflection light amount; calculating an emissivity of the surface of the measurement object by using a model indicating a relationship between an emissivity and a specular reflectance, and a relationship between the emissivity and a diffuse reflectance of the surface of the measurement object, the acquired specular reflection light amount, and the acquired diffuse reflection light amount; and calculating a surface temperature of the measurement object using the acquired radiation light amount and the calculated emissivity.