208results about "Photometry for measuring UV light" patented technology

Apparatuses are disclosed which include a lamp assembly having a germicidal lamp configured to emit ultraviolet light and a base supporting the germicidal lamp. The apparatuses further include a support structure holding operational components for the apparatus and an automated actuator for moving the base and the germicidal lamp relative to the support structure. In addition, the apparatuses include a processor and a storage medium having program instructions which are executable by the processor for activating the automated actuator such that the base and the germicidal lamp are repositioned relative to the support structure while the germicidal lamp is emitting ultraviolet light.

The invention provides a vacuum ultraviolet deuterium lamp spectral radiance traceability method, device and equipment, and relates to the technical field of optical metrology. The method comprises the following steps: determining relative spectral distribution of a deuterium lamp in a vacuum ultraviolet band; acquiring the spectral radiation brightness of the deuterium lamp at 200nm under the condition that the black body is used as a standard radiation source; and determining the spectral radiation brightness of the deuterium lamp in the vacuum ultraviolet band according to the relative spectral distribution of the deuterium lamp in the vacuum ultraviolet band and the spectral radiation brightness of the deuterium lamp at 200nm. The method provided by the embodiment of the invention efficiently and accurately realizes the spectral radiance traceability of the vacuum ultraviolet deuterium lamp.

A calculation module for determining a localization, system, eyewear and computer implemented method. The calculation module is configured to receive, from a spectrophotometer of an optical device, data representing a power density of at least two spectral components of a light received by the spectrophotometer and to determine the localization using the power density of the at least two spectral components.

An energy detection assembly (78) is suitable for an illumination system of a mask inspection system for use with EUV illumination light (3). The assembly (78) has at least one EUV energy sensor device (77) designed to detect energy of the illumination light (3) guided along an illumination light beam path. The EUV energy sensor device (77) has at least one energy value sensor and at least one energy change sensor (79). The energy value sensor serves to detect an illumination energy of the illumination light (3) over an exposure period. The energy change sensor (79) serves to detect a temporal development of the illumination energy of the illumination light (3) over the exposure period. This results in an energy detection assembly by means of which the inspection accuracy of the mask inspection system can be improved.

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.

The invention provides a UV light monitoring system that is capable of estimating the UV irradiance on a target surface oriented at an arbitrary angle relative to a UV emitter that emits UV light. The UV light monitoring system can be used in a system or process for disinfecting a space, where the UV light monitoring system may enable a dose of UV light experienced by a surface in the space to be accurately estimated. The invention can alternatively or additionally provide a mechanism for determining the orientation of a UV light monitor to assist with the optimal placement of the UV light monitor within a space. The orientation is determined based on a comparison between signals received from first and second solar cells that are located on different faces of the UV light monitor.

The invention discloses a corrosion detection sensor. Systems, devices, articles, and methods for corrosion detection are disclosed. An example apparatus includes an adhesive for removably directly coupling the apparatus to a region of a substrate; a first sensor for measuring a first parameter at the region; a second sensor for measuring a second parameter at the region, the first parameter and the second parameter being corrosion factors at the region; and a power source for providing power to the first sensor and the second sensor.

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.

Disclosed are a system and method for wired / wireless-online / offline communication-based continuous, real-time proportional and radiometric measurement, processing, and monitoring of the output of UV sources which generate UV radiation that can be used in water disinfection, surface disinfection, air, and room disinfection processes and for non-disinfection purposes. The system and method are provided to measure and monitor the UV output of the UV sources or in the environment continuously in real-time through externally placed sensors. In the system and method, data from the sensors is processed in a microprocessor-based electronic module, and the information is transmitted to an online / offline interface accessible to the end-user via wired / wireless communication.

Photolithography system, comprising: a plasma generation chamber (101); a droplet generator (108) configured to deliver a stream of droplets (142) into the plasma generation chamber; a laser (102) configured to generate a plasma from the droplets by irradiating the droplets in the plasma generation chamber; one or more first charged particle detectors configured to detect the speed, intensity, and / or energy of the charged particles ejected from the plasma and to output first sensor signals indicative of the charged particles; and a control system (114) configured to receive the first sensor signals, analyze the first sensor signals, and adjust plasma generation parameters based at least in part on the first sensor signals.

A system (5) for quantifying a color change in a colorimetric indicator (15), comprising: an imaging device (22) configured to acquire an image of an object (10) including the colorimetric indicator (15); and a processing device (20) configured to compare the acquired image with reference data (30) associated with the colorimetric indicator (15) to generate a quantitative output (28) associated with the acquired image. A system with.

The application provides a preparation method of a light response thin film material, the light response thin film material, an ultraviolet light monitoring device and a system. The method comprises the following steps: adding 4,4'-dihydroxyhexyloxy azobenzene into a polymer obtained by polymerization of a dihydroxy oligomer and a diisocyanate-based monomer to obtain polyurethane containing an azobenzene group; dissolving the polyurethane and a piezoelectric polymer in a high-boiling-point solvent to obtain an electrospinning solution; and performing electrospinning on the electrospinning solution to obtain the light response thin film material. The 4,4'-dihydroxyhexyloxy azobenzene containing a six-carbon spacer is added as a chain extender into the polymer of the dihydroxy oligomer and the diisocyanate-based monomer to obtain the ultraviolet light response polyurethane containing the azobenzene group. Furthermore, the light response thin film material with better flexibility, better mechanical properties and good ultraviolet light response can be prepared by combining the polyurethane and the piezoelectric polymer. The preparation process of the light response thin film material is simple, and the preparation cost is low.

The application discloses a thermoelectric pile structure for calibrating a far ultraviolet ultraviolet detector based on MEMS, which comprises a silicon substrate, a support layer, an absorption layer, a thermocouple pair, aluminum wires, aluminum electrodes and a single crystal silicon material structure on the silicon substrate. The double-layer thermocouple stacking structure is adopted to improve the device duty ratio, more thermocouple pairs can be laid in the case of keeping the size of the one-layer structure unchanged, and the response rate of the detector is improved. The circular structure conforms to the distribution trend that the temperature is radially diffused from the center of the absorption layer to the periphery in a decreasing manner, the hot end of the thermocouple pair can be closer to the area with higher temperature, the temperature of the hot end of the thermocouple pair is more uniform, and the response rate of the detector is improved. The radiant energy of the far ultraviolet ultraviolet radiation source is converted into an output thermoelectric electromotive force, a mathematical model of Fourier's law and the Seebeck effect is established for calculation, and the heat flux density of the far ultraviolet ultraviolet radiation source is measured.

One aspect relates to a device for measuring the intensity (10) of the UV radiation generated by a UV radiation source (26), in particular a UV radiation source (26) for sewer rehabilitation work, wherein the device comprises: - a receiving unit (12) with a measuring chamber (24) for receiving the UV radiation source (26) during the intensity measurement, wherein the receiving unit (12) comprises a first UV sensor (38) for measuring the intensity of the UV radiation generated by the UV radiation source (26), wherein the receiving unit (12) comprises a UV radiation source connection (28) to which the UV radiation source (26) can be connected in order to supply the UV radiation source (26) with operating voltage orto supply operating current, wherein in a first measuring mode the device is designed to measure the intensity of a UV radiation source (26) by arranging the UV radiation source (26) in the measuring chamber (24) and operating it at the UV radiation source connection (28), and wherein in a second measuring mode the device is designed to measure the intensity of a UV radiation source (26) by arranging the UV radiation source (26) in the measuring chamber (24) and operating it at an external device (27), in particular a device for curing UV-curable sewer rehabilitation materials.

The present invention provides a silicon carbide-based ultraviolet position-sensitive detector and a preparation method thereof, belonging to the technical field of position detectors. It includes an N-type silicon carbide substrate layer, an electrical isolation layer, a highly doped lower drift layer, a lowly doped middle drift layer, and a highly doped upper drift layer arranged from bottom to top. A first graphic area is provided on the highly doped lower drift layer, and the lowly doped middle drift layer and the highly doped upper drift layer are located in the first graphic area. First ohmic contact electrodes are respectively arranged on opposite sides of the first graphic area in a first direction. Two second ohmic contact electrodes are arranged at intervals along a second direction on the top of the highly doped upper drift layer, and the second direction is perpendicular to the first direction. The conductive characteristics of the highly doped lower drift layer and the highly doped upper drift layer are opposite. It can solve the technical problems of large detection structure position error and unsatisfactory measurement accuracy caused by device structure defects in the existing ultraviolet position-sensitive detectors.

The invention relates to the technical field of ultraviolet photoelectric detectors, and discloses an intelligent data acquisition system based on a SiC ultraviolet photoelectric detector, which comprises a Pico W main control unit, a low-noise power management module, a photoelectric acquisition front end, a sound-light alarm driving unit, a man-machine interaction display module and a dual-mode communication module. The Pico W main control unit coordinates data interaction of each module; the low-noise power supply management module avoids an onboard switching power supply loop through physical wiring and provides a physically isolated voltage-stabilized power supply for the photoelectric acquisition front end; the photoelectric acquisition front end constructs a transimpedance amplification framework to output analog voltage; the Net-WiFi communication module supports port multiplexing, and the Bluetooth communication module adopts a big data fragmentation mechanism. The problems that weak ultraviolet signals are easily interfered by power supply noise and transmission is discontinuous are solved, the signal-to-noise ratio is optimized through analog-to-digital power supply isolation, and high-precision real-time acquisition and monitoring of ultraviolet radiation are realized in combination with circulating storage and a high-efficiency communication protocol.

A method for inspecting an extreme ultraviolet (EUV) light source includes: removing a collector mirror of the EUV light source from a collector chamber; installing an inspection apparatus within the collector chamber, the apparatus including a selectively extendable and retractable member and a camera at one end of the member; operating a first actuator to extend the member along a path through the interior chamber of the EUV light source, thereby moving the camera to a given position within the interior chamber of the EUV light source; operating a second actuator to pan the camera about an axis of rotation, thereby establishing a given camera orientation within the interior of the EUV light source; and, capturing an image of the interior chamber of the EUV light source with the camera while the camera is at the given position and orientation established by the operation of the first and second actuators.

A wearable device detects ambient ultraviolet light and provides output related to lengths of time for safe exposure and health benefits. Orientations of the device, determined by an orientation sensor, intensity of ambient light determined by ultraviolet and visible light sensors, or both are used to determine a current position of the sun or other source of ultraviolet light. Data from the sensors and position of the sun are used to select a gain level for the ultraviolet light sensor or a corrective factor to be applied to signals from the ultraviolet light sensor. At a subsequent time, detected intensity of ambient ultraviolet light may be used in combination with external data relating to the location of the device to determine an output, such as recommended times for exposure. Other sensors may determine physiological characteristics of the user, which may also be used to determine personalized recommended exposure times.

This invention relates to a quartz optical window for enhancing solar-blind ultraviolet detection, its fabrication method, and its application. The method includes: etching a periodic array of hollow micro / nano structures with gradually changing morphology on the emitting end face of a quartz substrate with high transmittance in the solar-blind ultraviolet band; cleaning to obtain a quartz element; depositing a solar-blind ultraviolet-transmittance thin film material as the filling material for the hollow structure on the emitting end face of the obtained quartz element; polishing the coated emitting end face to obtain a functional layer of a periodic array of micro / nano structures with a period of 100nm–300nm, a thickness of 80nm–300nm, and a duty cycle greater than or equal to 0.5; cleaning to obtain a quartz optical window for enhancing solar-blind ultraviolet detection with the periodic array of micro / nano structures. This invention improves the quantum efficiency of the cesium telluride photocathode in a solar-blind ultraviolet image intensifier by using a quartz optical window with a micro / nano structure functional layer, thereby improving the cathode sensitivity and achieving long-distance, high-definition detection.

The present disclosure relates to a package structure for an optical sensor that enables sensing through reception of light in an ultraviolet (UV) wavelength range and converts an UV signal to a digital signal and a method for manufacturing the same, and the package structure for the optical sensor that enables sensing through reception of light in the UV wavelength range and converts the UV signal to the digital signal includes a light shield disposed at a printed circuit board (PCB) substrate on which a device portion for light sensing is mounted, surrounding the device portion such that a light receiving part of the device portion is exposed, and made of a material that blocks visible light coming in from a side of the device portion except the light receiving part; and a light diffuser disposed at the light receiving part of the device portion, configured to allow the light to pass through and diffuse the light, and made of a material including silicon dioxide.

The present invention relates to a thermal protection device and method for an ultraviolet filter used in a near-solar detector. The filter comprises a first filter substrate, a second filter substrate, and an ultraviolet filter film disposed on the surface of the first filter substrate. The thermal protection device comprises a base temperature control layer disposed between the first and second filter substrates, and a column-side temperature control layer disposed around the first filter substrate. The base temperature control layer is controlled by a first temperature controller, while the column-side temperature control layer is controlled by a second temperature controller. The present invention can control the temperature of the ultraviolet filter, preventing it from melting due to the extremely strong solar radiation incident on the near-solar detector.

Disclosed is a system for the measurement and analysis of melanopic light quantity, comprising a wearable sensor device (100), comprising a sensor array (102), the sensor array (102) comprising sensors, the sensors comprising a melanopic light sensor and at least one of a UV light sensor and an accelerometer. A data processing unit determines a behavioral pattern comprising analyzing the time-series sensor data. If further determines a melanopic light quantity within a predefined time range of the sensor data of the melanopic light sensor, determines a behavioral element of the pattern which has assigned a respective one of the melanopic light quantities suitable to at least partially compensate for the difference between a desired value and the determined value of the melanopic light quantity, and outputs a signal comprising a behavioral recommendation based on the selected behavioral element.

In a system, a conditioning device includes a diffuser, a lens configured to focus a beam of laser energy onto the diffuser and an iris configured to transmit at least a portion of the beam of laser energy transmitted by the diffuser.

To provide UV-responsive laminates including a first layer having a photochromatic pigment arranged as a pigment texture, or one or more photochromatic indicators, or combinations thereof.SOLUTION: The photochromatic pigment may be disposed on the laminates during laminate fabrication, prior to laminate installation, or subsequently to the installation in situ. The photochromatic pigment is configured to change from a first state to a second state in response to exposure to an ultraviolet (UV) light source, the first state is invisible to the naked eye under ambient lighting and the second state is visible to the naked eye under ambient lighting. The UV-responsive laminates may further include additional layers, such as a second layer which may be a coupling layer configured to removably couple the laminate to a component. Additional layers, such as a protective layer or a backing layer, may also be included in the UV-responsive laminate.SELECTED DRAWING: Figure 1D

To provide a sun exposure sensor which is easily manufactured, is simple and inexpensive.SOLUTION: A sun exposure sensor for disposable or single use includes: 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, the fluorescent toner image increasingly fading 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; and an optional backing layer disposed over all or a portion of the lower surface of the substrate. There is also provided a process for preparing the sensor using xerographic toner printing.SELECTED DRAWING: Figure 1

The invention provides an unmanned aerial vehicle ultraviolet radiation characteristic simulation system. The system comprises a light source assembly, a radiation energy gradual change modulation assembly and a beam expanding output assembly. The light source assembly comprises an ultraviolet light source lamp which is used for providing ultraviolet light; the radiation energy gradient modulation assembly comprises two groups of electric control variable attenuation sheet assemblies and a controller, and the controller is used for controlling corresponding motors to drive attenuation sheet discs in the two groups of electric control variable attenuation sheet assemblies to rotate so as to switch combinations of attenuation sheets in the two groups of electric control variable attenuation sheet assemblies, so that energy with different attenuation multiples is generated; the beam expanding output assembly comprises at least two beam expanding output optical lenses; wherein an emission port of the ultraviolet light source lamp, one attenuation piece of attenuation pieces of the electric control variable attenuation piece assembly and the beam expanding output optical lens are sequentially and coaxially arranged, ultraviolet light emitted by the ultraviolet light source lamp is modulated through the electric control variable attenuation piece assembly, beam expanding is conducted on emergent light through the beam expanding output assembly, and therefore the ultraviolet radiation characteristic of the unmanned aerial vehicle is simulated.

According to an aspect, a UV radiometer is provided. The UV radiometer includes a sensor assembly and a sensor controller. The sensor assembly includes a UV sensor element and a temperature sensing component configured to perform a thermal adjustment of a sensed UV input from the UV sensor element to produce a compensated UV signal. The sensor controller includes a signal conditioning circuit configured to receive the compensated UV signal from the sensor assembly and produce a conditioned and compensated UV signal. The sensor controller also includes a communication interface configured to transmit the conditioned and compensated UV signal to a UV process controller.

To provide users with optimal information that takes into account time-series environmental factors. [Solution] The information processing device has a means for acquiring environmental information indicating the amount of ultraviolet exposure that the user has been exposed to, the temperature of the environment in which the user spent time, and the humidity of the environment in which the user spent time, a means for presenting first information regarding the user's skin condition based on the environmental information, and a means for presenting second information regarding the user's skin condition based on environmental log information that includes multiple pieces of environmental information.

The invention discloses a flame recognition method, device and equipment and a storage medium, and relates to the technical field of fire protection and security. Comprising the following steps: monitoring ultraviolet radiation in a target monitoring environment in real time to obtain an ultraviolet monitoring result; the ultraviolet monitoring result is used for representing whether the ultraviolet monitoring signal in the target monitoring environment accords with flame radiation characteristics or not; monitoring infrared radiation in the target monitoring environment in response to the ultraviolet monitoring result indicating that the ultraviolet monitoring signal in the target monitoring environment accords with flame radiation characteristics, and obtaining an infrared monitoring result; the infrared monitoring result is used for representing whether an infrared monitoring signal in the target monitoring environment accords with flame radiation characteristics or not; and in response to the ultraviolet monitoring result continuously indicating that the ultraviolet monitoring signal in the target monitoring environment accords with the flame radiation characteristic and the infrared monitoring result indicating that the infrared monitoring signal in the target monitoring environment accords with the flame radiation characteristic, determining that the flame appears in the target monitoring environment. The accuracy of flame recognition can be improved.

This invention relates to an electronic circuit 1 for measuring photocurrent while considering temperature dependence. Furthermore, this invention relates to an optical gas sensor and a method for measuring photocurrent while considering temperature dependence. [Solution] The photodetector 10 has an anode terminal 11 and a cathode terminal 12, and the operational amplifier 20 has a first input section 21, a second input section 22 and an output section 23, the anode terminal 11 of the photodetector 10 and the first input section 21 of the operational amplifier 20 are electrically connected to each other, the cathode terminal 12 of the photodetector 10 and the second input section 22 of the operational amplifier 20 are electrically connected to each other, and the bias voltage terminal 50 is electrically connected to the anode terminal 11 of the photodetector 10 and the first input section 21 of the operational amplifier 20 via a first path 41. In this case, the electronic circuit 1 further includes a voltage divider 30 located in the first path 41 between the anode terminal 11 of the photodetector 10 and the bias voltage terminal 50.