255results 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 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.

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 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.

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.

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.

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.

The invention relates to the field of wavefront detection, and provides a large-aperture light beam wavefront detection device which comprises a beam shrinking system which comprises a light beam receiving end lens group and a light beam transmitting end lens group, the light beam receiving end lens group comprises a plurality of receiving end lenses arranged in an array mode, and the light beam transmitting end lens group comprises a plurality of transmitting end lenses arranged in an array mode. The transmitting end lenses and the receiving end lenses are arranged in one-to-one correspondence; the micro-lens array comprises a plurality of micro-lenses which are arranged in an array mode, and the micro-lenses and the transmitting end lenses are arranged in a one-to-one correspondence mode; the detector array comprises a plurality of detectors arranged in an array mode, and the detectors and the micro lenses are arranged in a one-to-one correspondence mode. Therefore, the light beam receiving end lens, the light beam transmitting end lens, the micro lens and the detector are in one-to-one correspondence to form a wavefront detection unit, a wavefront detection unit array is further formed, and the problems that an existing wavefront detector for measuring large-aperture light beams is large in size and low in imaging resolution are solved.

The present invention discloses a method and system for measuring the spatial light field of a lamp. A first imaging measurement device is used to measure the far-field illuminated surface illuminance distribution of the lamp under test within two or more local angle intervals, and synthesizes the global spatial light intensity distribution of the lamp under test. At the same time, a second imaging measurement device is used to measure the luminous surface images of the lamp under test in two or more postures to more accurately obtain the posture information of the lamp when measured by the first imaging measurement device. The global light set information of the lamp under test is calculated using the luminous surface images at various angles, and more spatial light field distribution data is further derived. The lamp spatial light field measurement system includes a rotating stage on which the lamp under test is installed, a diffuse screen, a first imaging measurement device, a second imaging measurement device, and a data transceiver control unit. The first imaging measurement device is aligned with the diffuse screen for measurement, and the second imaging measurement device is aligned with the lamp under test for measurement. Two or more sets of stray light elimination apertures are arranged between the rotating stage and the diffuse screen.

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 light detection element is provided with: a first semiconductor layer having a first main surface, which is a light incident surface, and a second main surface on the opposite side from the first main surface; a layer structure formed on the first main surface; a metal wiring line located inside the layer structure; and a plurality of quenching elements. The first semiconductor layer has: a plurality of first semiconductor regions of a first conductivity type; a plurality of second semiconductor regions of a second conductivity type that constitute a plurality of avalanche photodiodes together with the plurality of first semiconductor regions; and a plurality of third semiconductor regions of the first conductivity type having an impurity concentration higher than that of the first semiconductor regions. The thickness of the metal wiring is greater than the distance from a first surface of the metal wiring on the opposite side to the first main surface to a surface of the layer structure on the opposite side to the first main surface, and is greater than the distance from a second surface of the metal wiring on the first main surface side to the surface of the layer structure on the first main surface side.

A method of forming a bismuth chalcogenide film is disclosed including the steps of (a) forming at least one bismuth (Bi) elemental layer on a substrate, (b) forming at least one selenium (Se) or tellurium (Te) elemental layer on the substrate, and (c) after steps (a) and (b), heating the substrate to form a bismuth chalcogenide film.

The invention discloses a time-space fusion detector double-reservoir network system based on multi-frame-in-one calculation, and relates to the technical field of bionic intelligent vision and brain-like calculation. The system comprises a photoelectric reservoir layer and an electrical readout layer, and the photoelectric reservoir layer comprises a retina-shaped MoS2 photoelectric detector array and is used for constructing the photoelectric reservoir layer by using the nonlinear continuous photoconduction characteristic of a two-dimensional MoS2 photoelectric detector. Detecting an optical signal and projecting the optical signal into an electrical readout layer with increased dimensions in a photocurrent form of a multi-frame-in-one pattern; the electrical readout layer includes a memristor cross array for processing an input signal in a parallel manner and generating an output result in real time. The system has the advantages of low power consumption, low delay, high recognition precision and the like, and is particularly suitable for complex application scenes such as infrared dynamic moving target recognition.

Disclosed herein are methods, systems, and devices for providing optimized simultaneous illumination for human vision and machine based navigation vision on a semi-autonomous vehicle. In one embodiment, a system includes a first control output configured to provide first illumination control information including first active cycle times for a first illumination source. The first illumination source is configured to provide a first frequency band of illumination for machine vision navigation of the semi-autonomous vehicle. The system further includes a second control output configured to provide second illumination control information including second active cycle times for a second illumination source. The second illumination source is configured to provide a second frequency band of illumination for a human driver of the semi-autonomous vehicle. The system further includes a first monitor input configured to receive ambient illumination information from a camera system.

An optical system (1) for a multispectral optical sensor (10) comprises: a diffusing element (2); a detector (3) comprising a detection plane (30); an optical element (4) having an entrance side (41) and an exit side (42), located between the diffusion element (2) and the detector (3); and an aperture (5) located at the incident side (41) of the optical element (4) between the diffusing element (2) and the optical element (41). The optical element (4) is configured to image at least one field of view (100) to a detection plane (30). The detection plane (30) is arranged in a focal plane of the optical element (4). The diffusing element (2) is configured to scatter light from the field of view (100), generating a blurred image (90) of the field of view (100) in the detection plane (30).

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.

[Problem to be solved by the invention] In a method of checking optical characteristics of one LED of a pair of LEDs that are to be checked by causing the one LED to emit light and receiving the light by the other LED, using a current value of a current output by a photoelectric effect, optical characteristics of a plurality of LEDs cannot be checked at once. [Solution] A test device includes: an electrical connection portion electrically connected to terminals of each of a plurality of light emitting elements that are to be tested; a light source portion that irradiates light to the plurality of light emitting elements together; a measurement portion that measures a photoelectric signal output from the plurality of light emitting elements by photoelectric conversion of light irradiated by the light source portion and via the electrical connection portion; an acquisition portion that acquires a correction map including a correction value for correcting unevenness in intensity of light irradiated by the light source portion to positions of each of the plurality of light emitting elements; and a determination portion that determines whether each of the plurality of light emitting elements is good or not based on a measurement result of the measurement portion and the correction map acquired by the acquisition portion.