324results about "Photometry using multiple detectors" patented technology

There is provided a photonic integrated apparatus for determining an orientation and / or a position of an optical waveguide, by measuring a relative intensity and a relative phase difference of the probe light signal incident on a sensor array. The phase profile of the probe light signal projected spatially on the sensor array is particularly sensitive to small changes in the optical probe's orientation and distance. The apparatus measures the relative intensity and relative phase difference of the probe light signal incident on a sensor array. A photonic integrated sensor circuit comprises the sensor array and one or more optical interferometric circuits. Changes in the sensed relative intensity and relative phase difference of the probe light signal, as sampled by the sensor array, indicate variations in the relative orientation and / or distance between the optical waveguide and the sensor array.

The invention provides a light intensity measurement method and device based on single-photon detection and electronic equipment, and relates to the technical field of single-photon detection and laser radar imaging, and the method comprises the steps: collecting the arrival time information of photons in a plurality of single-photon detection events for each detection position; extracting a time sequence characteristic quantity related to the light intensity estimation based on the arrival time information; constructing a model input parameter for estimating the target light intensity based on the time sequence characteristic quantity; inputting the model input parameters into a light intensity estimation model, and predicting a light intensity estimation value of the target light intensity; and generating a corresponding light intensity distribution image according to the light intensity estimation value. According to the method, high-precision light intensity estimation can be realized only by a few photons, the requirements on the repeated detection times and the signal-to-background ratio are greatly reduced, and the imaging robustness is enhanced.

A positioning method and apparatus, and a vehicle. The method comprises: acquiring first position information of a first light source (S301); determining a first ambient light sensor corresponding to the first light source, the first ambient light sensor being located in an ambient light sensor group (S302); and determining second position information of the vehicle according to the orientation information of the first ambient light sensor and the first position information (S303). Through the method, the vehicle can be positioned in a low-cost and high-precision manner in a scene with insufficient natural light.

A photodetection element according to the present disclosure includes first, second, and third photoelectric conversion units that photoelectrically convert light in first, second, and third wavelength ranges respectively, a color splitter layer, and an antireflection film. The first photoelectric conversion unit is arranged side by side with the second and third photoelectric conversion units. The color splitter layer is on a light incident side of the first, second, and third photoelectric conversion units. The antireflection film is on a light incident side of the color splitter layer. The antireflection film arranged on the light incident side of the first photoelectric conversion unit, the antireflection film arranged on a light incident side of the second photoelectric conversion unit, and the antireflection film arranged on a light incident side of the third photoelectric conversion unit have different respective configurations.

A method for calibrating an optical sensor and / or a camera for a motor vehicle, wherein the optical sensor and / or the camera detects ambient light through a first pane (10) for the motor vehicle, the method comprising the following steps: receiving a first attenuation value of a first reference light beam reflected in a second pane (50) for a motor vehicle; receiving a second attenuation value of a second reference light beam passed through the second pane (50); transmitting a measuring light beam from a first side (12) of the first pane (10) into the first pane (10); receiving the measuring light beam reflected in the first pane (10) on the first side (12) of the first pane (10); determining a third attenuation value of the measuring light beam in the first pane (10) based on the transmitted measuring light beam and the received measuring light beam;and calibrating the optical sensor and / or the camera based on the first attenuation value of the second disc (50), the second attenuation value of the second disc (50) and the third attenuation value of the first disc (10);

A filter array, which is to be used in a photodetection system that generates image data of each of N wavelength bands (where N is an integer greater than or equal to 4), includes optical filters whose light transmittances in each of the N wavelength bands differ from each other. (σ1 / μ1)≥0.1, . . . , and (σN / μN)≥0.1, where μi is a mean value of transmittances, corresponding one-to-one to the optical filters, with respect to light of an i-th wavelength band (where i is an integer greater than or equal to 1 and less than or equal to N) among the N wavelength bands, and where σi is a standard deviation of the transmittances, corresponding one-to-one to the optical filters, with respect to the light of the i-th wavelength band.

In a first aspect of the disclosure there is provided a multi-spectral optical sensor comprising: a monolithic semiconductor chip defining a plurality of subarrays of optical detector regions, each array comprising the same number and relative spatial arrangement of optical detector regions; a plurality of optical filters; and a plurality of lens elements, wherein each optical filter is positioned between a corresponding lens element and a corresponding subarray of optical detector regions such that light from a scene incident on any one of the lens elements along a direction of incidence propagates through the corresponding optical filter towards a corresponding one of the optical detector regions of the corresponding subarray of optical detector regions, which corresponding one of the optical detector regions depending on the direction of incidence, and wherein the incident light forms an out-of-focus image of the scene at a plane of the optical detector regions.

The invention relates to the technical field of induction lamps, and discloses an ambient light detector and an induction lighting device with the same. The ambient light detector comprises a light condensation piece which is a reflection cup, the concave face of the reflection cup is a reflection face, and the edge of the large opening end of the reflection cup is parallel to the main shaft of the reflection cup; and the light sensation receiving piece is installed at the small end of the reflection cup, and the light receiving face of the light sensation receiving piece faces the reflection cup. Through the cooperation of the light condensing part and the light sensation receiving part, light in a detection angle can be converged and enhanced, light outside a detection range can be automatically shielded and is not received, and a clear detection boundary can be realized. The light sensation receiving part receives the light signals which are converged and enhanced and have clear boundaries in a large-angle range, so that the light change of the external environment can be accurately detected, and the environment error when the light intensity of the lamp is adjusted according to the light signals received by the light sensation receiving part is greatly reduced.

The invention relates to Device for quantum generation of random numbers comprising a light source (100) with fixed polarization and a polarization splitting element (110) optically connected thereto, having a first output (111) corresponding to vertical polarization and a second output (112) corresponding to horizontal polarization, and a first detector (131) optically connected to the first output (111) of the polarization splitting element (110) and a second detector (132) optically connected to the second output (112) of the polarization splitting element (110), a generating module (140) having a first input (141) connected to the output of the first detector (131) and a second input (142) connected to the output of the second detector (132), and a two-state output (143), the generating module (140) configured to generate on the two-state output (143) bits having a value of 1 upon receiving a signal on the first input (141) and bits having a value of 0 upon receiving a signal on the second input (142), characterized in that the light source (100) is connected to the polarization splitting element (110) via a multi-state polarization modulator (150) controlled by a digital or analog signal generated by a control electronics (160) connected to the multi-state polarization modulator (150).The invention comprises also a method for verification of privacy of random bit sequences generated by means of such a device.

Illuminance distributions on illuminated surfaces within two or more local angular intervals in the far-field of a measured luminaire are measured by a first imaging measurement device and integrated to obtain full spatial light field information of the measured luminaire. Meanwhile, light-emitting surface images of the measured luminaire in two or more poses are obtained by a second imaging measurement device, so as to obtain more accurate pose information of the luminaire when measured by the first imaging measurement device; ray set information of the measured luminaire is calculated from the light-emitting surface images at all angles, and more spatial light field distribution data is further derived. The system includes a rotatable table for installing the measured luminaire, a diffusing screen, the first imaging measurement device, the second imaging measurement device, and a data transmission and reception control unit.

The invention belongs to the technical field of optoelectronic equipment testing, and particularly relates to a method for testing irradiation intensity of an area light source device, which comprises the following steps of: firstly, dividing the area light source device into a plurality of test areas, and numbering each area; secondly, acquiring the irradiation intensity of each test area in real time by using a high-precision optical sensor array; then, the collected analog signals are converted into digital signals through an A / D conversion circuit, and the digital signals are transmitted to a data processing unit; then, the data processing unit calculates the irradiation intensity value of each area, and analyzes the uniformity and consistency of the overall irradiation intensity distribution; and finally, displaying a test result through an upper computer control system, and generating an irradiation intensity distribution diagram. Through the high-precision sensor array and the data processing technology, the irradiation intensity distribution of the area light source device can be rapidly and accurately tested, a reliable basis is provided for light source performance optimization, and the method has the advantages of being efficient, accurate and high in practicability.

The invention relates to sensor system arrangements and configurations. In particular, the invention provides methods, devices, systems and computer program products for integrating, compositing and / or processing data representing a measurable state within a region-of-interest, that has been received from a plurality of sensors that respectively have different input sensitivities, spectral sensitivity ranges and / or input capture ranges.

The invention relates to a method and a device for determining an albedo of the ground and / or an irradiance of radiation reflected by the ground (14), in a solar installation (12), by means of at least one device (30, 31, 54) for capturing ground-based measurement data, comprising at least one camera (32) which captures an image or a plurality of images of the ground (14) and an evaluation unit (42) which evaluates the ground-based measurement data using satellite image data. The invention also relates to a computer program for determining an irradiance of radiation reflected by the ground, to a data processing device, and to trained machine-learning models for extracting features.

A calibration tool for a beam profiler is disclosed. The calibration tool includes an integrating sphere configured to receive laser light emitted from a laser and generate diffuse laser light. A sensor system is configured to output an expected intensity value of the diffuse laser light. An interface is configured to align a beam profiler with the integrating sphere to direct the diffuse laser light to be incident on an array of pixels of a beam sensor of the beam profiler. The array of pixels of the beam sensor is configured to output a plurality of native intensity values of the diffuse laser light. A computing system is configured to calibrate the beam profiler based at least on differences between the plurality of native intensity values of the diffuse laser light and the expected intensity value of the diffuse laser light.

In a first aspect of the disclosure there is provided a multi-spectral optical sensor comprising: a monolithic semiconductor chip defining a plurality of subarrays of optical detector regions, each array comprising the same number and relative spatial arrangement of optical detector regions; a plurality of optical filters; and a plurality of lens elements, wherein each optical filter is positioned between a corresponding lens element and a corresponding subarray of optical detector regions such that light from a scene incident on any one of the lens elements along a direction of incidence propagates through the corresponding optical filter towards a corresponding one of the optical detector regions of the corresponding subarray of optical detector regions, which corresponding one of the optical detector regions depending on the direction of incidence, and wherein the incident light forms an out-of-focus image of the scene at a plane of the optical detector regions.

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 present invention provides an array coherent balanced photodetection component and manufacturing method. The component includes: a package housing, an array balanced readout integrated circuit, two photodetector array units, and a package substrate. The top surface of the package housing includes a filter plate. Inside the package housing, two photodetector array units are disposed on the top surface of the array balanced readout integrated circuit and connected to the array balanced readout integrated circuit. The top surface of the array balanced readout integrated circuit is the side facing the filter plate. The package substrate is disposed on the bottom surface of the array balanced readout integrated circuit and connected to the array balanced readout integrated circuit. The above-mentioned array coherent balanced photodetection component can integrate the two photodetector array units, thereby realizing high-sensitivity laser signal array detection based on laser signal coherent detection and integrated array photoelectric signal processing, thereby improving detection sensitivity.

A photodetector device includes an avalanche photodiode array substrate 10 formed from compound semiconductor. A plurality of avalanche photodiodes 20 arranged to operate in a Geiger mode are two-dimensionally arranged on the avalanche photodiode array substrate 10. A circuit substrate 50 includes a plurality of output units 30 which are connected to each other in parallel to form at least one channel 40. Each of the output units 30 includes a passive quenching element 31 and a capacitative element 32. The passive quenching element 31 is connected in series to at least one of the plurality of avalanche photodiodes 20. The capacitative element 32 is connected in series to at least one of the avalanche photodiodes 20 and is connected in parallel to the passive quenching element 31.

The present invention provides an optical waveguide. The optical waveguide includes an optical waveguide plate; an input grating, the input grating couples light emitted by an external image source into the optical waveguide plate; a turning grating, the turning grating is used to receive light from the input grating, and the turning grating is located on one side of the input grating; an output grating, the output grating is used to receive light from the turning grating, and the output grating is located on one side of the turning grating, the line connecting the center of the input grating and the center of the turning grating is perpendicular to the line connecting the center of the output grating and the center of the turning grating, and the output grating couples light out of the optical waveguide plate; a detector, at least one detector is located on the side of the turning grating away from the input grating, so as to receive light in the turning grating that does not enter the output grating, and at least another detector is located on the side of the output grating away from the turning grating, so as to receive light in the output grating that is not used for imaging. The present invention solves the problem that the optical waveguide in the prior art is difficult to realize real-time detection and affects the imaging quality.

An integrated photodetection semiconductor optoelectronic component (300) for measuring the intensity (I1, I2) of each of two color components (C1, C2) of dichroic light (DL) irradiating the optoelectronic component, comprising: a first SPAD (306) adapted to detect photons within a wide wavelength range, the first SPAD comprising an effective surface area (340) allowing photons to be detected to enter the first SPAD; a second SPAD (308) adapted to detect photons within a wide wavelength range, the second SPAD being arranged adjacent to the first SPAD (306); and a semiconductor optical long-pass filter (310) at least partially covering the effective surface area (340) of the first SPAD. 310) allows the first color component (C1) of the two color components of the dichroic light (DL) to pass through, and blocks the second color component (C2) of the two color components of the dichroic light (DL); an electronic circuit (304) for reading and processing the detection signals (S1, S2) transmitted by the first and second SPADs, the electronic circuit being suitable for: i) providing a first intensity output signal I1 indicating the intensity of the first color component (C1) based on the detection signal (S1) transmitted by the first SPAD; and ii) providing a second intensity output signal I2 indicating the intensity of the second color component (C2) through difference analysis based on the detection signals (S1, S2) transmitted by the first and second SPADs.

Sun sensor for a vehicle (100), vehicle with the sun sensor, method for operating the vehicle, wherein the sun sensor comprises several module cells of a photovoltaic module (101) of a photovoltaic system for the vehicle (100), wherein the sun sensor is configured to detect and / or output a sensor value, in particular a radiant power, a voltage, and / or a current, wherein the sensor value characterizes a solar irradiance into a module cell or a solar irradiance into several module cells.

The present invention relates to sensor apparatus and methods and storage media. Methods for low-level fusion for silicon photomultiplier based sensors, i.e., SiPM-based sensors, are provided that can include circumventing light detection and ranging sensor processing paths, i.e., LiDAR sensor processing paths, to provide high-confidence low-level fusion between camera (passive) imaging and LiDAR (active) imaging. Systems and computer program products are also provided.

The present invention relates to a confocal Raman microspectrometry apparatus (100) comprising a laser source (1), a microscope objective (3) arranged to focus the excitation laser beam (10) towards a sample (5), and a focusing system on the sample. According to the invention, the focusing system comprises an optical beam splitter (11), an image detector (13), an astigmatic optical system (12), a processor comprising an image processing system (15), and a feedback device (16). The optical beam splitter (11) is adapted to extract a fraction (21) of the reflected beam, the astigmatic optical system (12) is adapted to project the fraction (21) of the reflected beam as a spot on the image detector (13), and the image processing system (15) is adapted to calculate a focusing error signal from the image of the spot. Figure 1

This disclosure relates to a display panel and a display device. The display panel includes at least one sensing module disposed in a peripheral area. The sensing module includes at least one sensing unit, and the sensing unit includes a sensing transistor. A first terminal of the sensing transistor receives an electrical signal, a gate of the sensing transistor receives a first control signal, and a second terminal of the sensing transistor outputs a light-sensitive signal. When the sensing transistor receives the first control signal, the gate of the sensing transistor is set to an off state. When illuminated, the voltage output from the drain of the sensing transistor increases. The voltage change is read as a light-sensitive signal. Based on the response results to different wavelengths and combined with the spectral characteristics of common ambient light, ambient light is identified. Based on this function, the display color temperature can be optimized to improve the display effect.

A system for analyzing laser beam characteristics at field of view extremities in high-speed laser motion systems, wherein the high-speed laser motion systems comprise a laser that generates a non- stationary laser beam and a build platform positioned at a predetermined location relative to the non- stationary laser beam, comprising a known or pre-defined field of view of the laser, wherein the laser beam characteristics are known or determined at a center location of the field of view; and a plurality of pin-hole sensors mounted at the field of view extremities, wherein each pin-hole sensor measures the laser beam characteristics at the field of view extremities, and wherein differences between the laser beam characteristics at the center location and the laser beam characteristics at the field of view extremities are captured and accounted for in the high-speed laser motion system during processing.

The invention relates to beam analyzer authentication and calibration. A calibration tool for a beam analyzer is disclosed. The calibration tool includes an integrating sphere configured to receive laser light emitted from the laser and generate diffused laser light. The sensor system is configured to output an expected intensity value of the diffused laser light. The interface is configured to align the beam analyzer with the integrating sphere to direct the diffuse laser light to be incident on a pixel array of a beam sensor of the beam analyzer. A pixel array of the beam sensor is configured to output a plurality of intrinsic intensity values of the diffused laser light. The computing system is configured to calibrate the beam analyzer based at least on a difference between a plurality of intrinsic intensity values of the diffused laser and an expected intensity value of the diffused laser.

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.

An imaging device includes: a photoelectric conversion element including an avalanche photodiode; a generation unit configured to generate an image based on a signal acquired by the photoelectric conversion element; a first correction unit configured to correct the image based on first characteristic information on crosstalk between pixels of the photoelectric conversion element; and a second correction unit configured to perform pixel interpolation of the image based on second characteristic information for determining a crosstalk region to neighboring pixels of a specific pixel and the image.