The invention provides a system and related equipment for the precise measurement of the output characteristic of a light source, e.g., a dental light curing unit (LCU) or light for photodynamic therapy, using a light collector, a light detector, and a computer programmed to deliver the value of the output characteristic of the light source to the user. The systems allow for the determination of a proper exposure time or the selection of a light source as needed for a specific application.

A sun exposure sensor for disposable or single use including a substrate having an upper surface and a lower surface; a sun exposure sensing portion disposed on the upper surface of the substrate, the sun exposure sensing portion comprising a fluorescent toner image, wherein the fluorescent toner image increasingly fades upon exposure to sunlight; a sun exposure scale disposed on the upper surface of the substrate, the sun exposure scale comprising an evaluation image for evaluating an amount of fading of the fluorescent toner image; an optional coating layer disposed over all or a portion of the upper surface of the substrate; an optional backing layer disposed over all or a portion of the lower surface of the substrate. A process for preparing the sensor using xerographic toner printing.

A UV detection device is removably attached to a surface of a structure and includes a photodetector to detect UV light incident on the structure. The UV detection device includes signal processing and a transmitter that wirelessly transmits UV detection data to a remote monitoring station where the detection signals are accumulated and analyzed to determine the total exposure of the structure to UV light.

An integrated ultraviolet (UV) detector includes a silicon carbide (SiC) substrate, supporting metal oxide field effect transistors (MOSFETs), and PN Junction photodiodes. The MOSFET includes a first drain/source implant in the SiC substrate and a second drain/source implant in the SiC substrate. The P-N junction photodiodes include a blanket oxide over the silicon carbide substrate and the gate, an implant extending into the silicon carbide substrate, and an opening extending through the blanket oxide layer down to the silicon carbide substrate on one side of the gate of the P-N junction photodiode.

Various embodiments of the present invention relate to: an electronic device capable of measuring illuminance by using an optical sensor and providing information on the measured illuminance to a user; and an operating method therefor. The electronic device according to various embodiments of the present invention comprises: a light emitting unit; a sensor having a light receiving unit; and a processor, wherein the processor is set so as to: sense a first illuminance outside the electronic device by using the sensor; emit light by using the light emitting unit when the first illuminance belongs to a predetermined range; confirm whether an external object is nearby by using the sensor based on at least the light emitted using the light emitting unit; determine the first illuminance as the illuminance outside the electronic device when the external object is not nearby; and estimate a second illuminance corresponding to the first illuminance by using a selected method based on at least context information related to the electronic device when the external object is nearby.

The present invention relates to an electronic device and a method for measuring ultraviolet light by using an electronic device including a camera. The electronic device according to various embodiments of the present invention comprises: a display; an image sensor for acquiring an image by using light including a first wavelength band or a second wavelength band; and a processor, wherein the processor can be set so as to compare a first image acquired using the light of the first wavelength band with a second image acquired using the light of the second wavelength band, acquire, on the basis of the comparison result, information on ultraviolet reflectance for at least a part of at least one subject included in the first image or the second image, and display at least a part of the acquired information on the ultraviolet reflectance by using the display.

A system for measuring light in a tube is provided. The system includes a tube, a light collecting probe configured to absorb light within the tube, a data acquisition system for determining a level of light associated with light absorbed by the light collecting probe, and a motion system for moving the light collecting probe within the tube.

A transducer modulus, comprising: a substrate; a cap on the substrate, defining a chamber; and a sensor modulus in the chamber, integrating a first MEMS transducer facing the chamber, and a second MEMS transducer facing the supporting substrate. The cap has a first opening that forms a path for access of the first environmental quantity exclusively towards a sensitive element of the first transducer, and the supporting substrate has a second opening that forms a path for access of the second environmental quantity exclusively towards a sensitive element of the second transducer.

A system for measuring a radiant exposure of electromagnetic radiation includes an accumulation detection module having a detector and configured to continuously monitor an electromagnetic radiation received by the detector; and an adaptive circuit configured to periodically interrogate the accumulation detection module; adjust a frequency of interrogation of the accumulation detection module based on an intensity of the electromagnetic radiation received by the detector; and autonomously transmit information related to an amount of the electromagnetic radiation received by the detector to a remote device.

A radiation sensor apparatus for determining a position and/or power of a radiation beam, the radiation sensor apparatus including a chamber to contain a gas, one or more sensors, and a processor. The chamber has a first opening and a second opening such that a radiation beam can enter the chamber through the first opening, propagate through the chamber generally along an axis, and exit the chamber through the second opening. Each of the one or more sensors is arranged to receive and detect radiation emitted from a region of the chamber around the axis. The processor is operable to use the radiation detected by the one or more sensors to determine a position and/or power of the radiation beam.