The proposed invention relates to an electronic ring for monitoring Vitamin D produced in a body of a user. The electronic ring comprises an Ultraviolet (UV) light sensor for determining a value of Ultraviolet B (UVB) radiation during exposure of sunlight on a body of a user. The electronic ring further comprises a microcontroller for determining an exposure time of the user to the sunlight. The microcontroller further determines an UVB dosage of the user based on a reciprocal of a product of the exposure time and a predefined weightage factor. The predefined weightage factor is associated with a wavelength of the UVB radiation. The microcontroller further determines an amount of Vitamin D produced in the body of the user based on the UVB dosage of the user.

A thermally coupled imager includes a single photon detection pixel electrically isolated but in thermal communication with a thermal readout bus via a thermally conductive galvanic isolator, wherein the single photon detection pixel receives a single photon and produces thermal energy that is communicated to the thermal readout bus. A position and time of arrival of the single photon received by the single photon detection pixel is determined from voltage pulses produced by the thermal readout bus in response to receiving the thermal energy from the single photon detection pixel.

An air conditioner includes: a fan; an ultraviolet (UV) light emitter; memory storing instructions; and at least one processor, wherein the instructions, when executed by the at least one processor, cause the air conditioner to: perform a sterilization operation on a first region of the fan by controlling the UV light emitter to irradiate the first region with the UV light, after performing the sterilization operation on the first region, rotate the fan to change a region of the fan on which the sterilization operation is to be performed to a second region, determine whether the second region being irradiated with the UV light has been previously subjected to the sterilization operation, and based on determining that the second region has been previously subjected to the sterilization operation, rotate the fan again to change the region of the fan on which the sterilization operation is to be performed.

A first object of the present invention is to provide an ultraviolet-sensing member having excellent storage stability and image stability. In addition, a second object of the present invention is to provide a microcapsule, a production method of a microcapsule, a dispersion liquid for forming an ultraviolet-sensing layer, and an ultraviolet-sensing kit. The ultraviolet-sensing member of the present invention is an ultraviolet-sensing member including an ultraviolet-sensing layer containing a microcapsule which contains a photoactivator, a color-forming agent, and an aromatic solvent, in which the aromatic solvent includes an aromatic solvent including a heteroatom and an aromatic solvent including no heteroatom.

A tracking system for an adaptive eyeglass includes a left eye-tracker, a right eye-tracker, left auxiliary sensor(s), right auxiliary sensor(s), a processor, a left communication bus communicably coupling the processor to the left auxiliary sensor(s), and a right communication bus communicably coupling the processor to the right auxiliary sensor(s). Communication between the left auxiliary sensor(s) and the left communication bus is temporarily disabled, whilst sampling left eye-tracking data using the left eye-tracker. Communication between the right auxiliary sensor(s) and the right communication bus is temporarily disabled, whilst sampling right eye-tracking data using the right eye-tracker.

A solar radiation protective band for a driver that includes a housing and an armband. The housing includes a front panel, a side panel, and a microcontroller. The front panel includes a front panel UV light sensor, a front panel IR phototransistor, and an LCD. The side panel includes a side panel UV light sensor, and a side panel IR phototransistor. A temperature sensor measures a skin temperature and generates a temperature signal. A skin color sensor detects a skin color of the driver and generates a skin color signal. The microcontroller requests an input of a SPF of a sunscreen used by the driver; calculates an exposure time threshold; generates a UV exposure warning when an exposure time exceeds the exposure time threshold; calculates an updated skin temperature; and generates an IR exposure warning when the updated skin temperature exceeds a maximum skin temperature threshold.

A photoionization detector (PID) and method for PID is disclosed. The PID comprises a primary pole and a secondary pole spaced apart from the primary pole. The secondary pole is coupled to a bias voltage source. The secondary pole is exposed to ultraviolet (UV) light emitted from at least one UV light source for generating photo-induced electrons. The PID further comprises at least one gas port associated with the secondary pole configured to flow gas in between the primary pole and the secondary pole for absorbing the UV light to alter the generated photo-induced electrons.

A gas turbine engine fuel system includes a fuel delivery system, an oil cooling subsystem, a fuel delivery conditioning system, and one or more optical coking sensors. The fuel delivery subsystem delivers fuel to a gas turbine engine and the oil cooling subsystem receives heated oil from the gas turbine engine. The fuel delivery conditioning system includes a fuel/oil cooler that is in fluid communication with the fuel delivery subsystem to receive the fuel and is in fluid communication with the oil cooling subsystem to receive the heated oil. The fuel/oil cooler transfers heat from the oil to the fuel to increase a temperature of the fuel, and the optical coking sensors output a signal indicating a thermal stress of the fuel that occurs with a changing temperature of the fuel. A controller receives the voltage signal determines an onset of coking in the fuel based on the signal.

With the present invention, it is possible to provide an inspection tool capable of easily inspecting whether or not light which inactivates a virus or the like has been radiated and easily inspecting whether or not light which is harmful to the human body has been radiated. The inspection tool of the present invention includes a first display portion and a second display portion, in which the first display portion is a display portion which indicates a visual change before and after irradiation of the inspection tool with light having at least any of wavelengths in a wavelength range of 200 to 280 nm, and the second display portion is a display portion which does not indicate a visual change before and after irradiation of the inspection tool with light in a wavelength range of 200 to 230 nm, but indicates a visual change before and after irradiation of the inspection tool with light having at least any of wavelengths in a wavelength range of more than 230 nm and 280 nm or less.

The proposed invention relates to an electronic ring for monitoring Vitamin D produced in a body of a user. The electronic ring comprises an Ultraviolet (UV) light sensor for determining a value of Ultraviolet B (UVB) radiation during exposure of sunlight on a body of a user. The electronic ring further comprises a microcontroller for determining an exposure time of the user to the sunlight. The microcontroller further determines an UVB dosage of the user based on a reciprocal of a product of the exposure time and a predefined weightage factor. The predefined weightage factor is associated with a wavelength of the UVB radiation. The microcontroller further determines an amount of Vitamin D produced in the body of the user based on the UVB dosage of the user.