173results about "Photometry using multiple detectors" patented technology

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);

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.

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.

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.

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.

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.

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).

[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.

To provide a photo-detector capable of reducing the thickness and optical loss while maintaining the function of a metalens as a lens.SOLUTION: A photo-detector 4 includes a photodetector element 6 having a surface 6a and including a plurality of avalanche photodiodes APD arranged along the surface 6a, and a plurality of metalens portions 8 arranged on the surface 6a so as to correspond to the plurality of avalanche photodiodes APD. From among the plurality of avalanche photodiodes APD and the plurality of metalens portions 8, in the corresponding one avalanche photodiode APD and one metalens portion 8, the one metalens portion 8 includes a plurality of metalens 9 arranged along the surface 6a.SELECTED DRAWING: Figure 10

A tilt and orientation sensing device is provided. [Solution] The tilt and orientation sensing device includes a dome structure including a spherical surface, and a ductile circuit board configured to surround at least a portion of the spherical surface, the ductile circuit board including a plurality of optical sensors configured to measure the amount of sunlight, and is characterized in that when the ductile circuit board is positioned on the spherical surface, the plurality of optical sensors face different directions from each other.

The invention comprises a device (100) for measuring (120) solar radiation in the interior (211) of a driver's cabin (210) of a commercial vehicle (200), comprising: - a spherical lens (10) configured for providing a focused light beam (L2) opposite [along] to a vertical direction (z) based on collected solar radiation (L1) which is specific for the interior (211) of a driver's cabin (210) of a commercial vehicle (200), - a sensor (20) configured for measuring (120) the focused light beam (L2), wherein the sensor (20) is configured for providing a sensor signal (S3) based on the measured focused light beam (L2), - an interface (30) configured for transmitting (130) the sensor signal (S3) to an electronic control unit (ECU). Furthermore, the invention comprises a corresponding method, computer program product, computer readable storage medium and a commercial vehicle (200).

According to embodiments of the present invention, a method of detecting photons is provided. The method includes arranging a plurality of light absorbing elements to interact with an electromagnetic standing wave at a corresponding plurality of points of the electromagnetic standing wave to absorb at least part of the electromagnetic standing wave, the plurality of light absorbing elements being spaced apart from each other, and detecting electrical signals generated in response to the absorption to detect photons corresponding to the electromagnetic standing wave. According to further embodiments of the present invention, a photon detector arrangement is also provided.

A light detection element includes a first semiconductor layer having a first main surface and a second main surface, a layer structure, metal wiring located inside of the layer structure, and a plurality of quenching elements. The first semiconductor layer includes a plurality of first semiconductor regions, a plurality of second semiconductor regions, and a plurality of third semiconductor regions. The thickness of the metal wiring is larger than the distance from the first surface of the metal wiring on a side opposite to the first main surface to the surface of the layer structure on a side opposite to the first main surface, and is larger than the distance from the 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.

An alignment sensor is provided for a laser system that emits a coherent beam. The sensor includes a dispersing prism, a focal plane array detector, a processor, and a transform lens. The dispersing prism receives the beam for deflection and wavelength separation as transmission into a plurality of dispersion beams. The transform lens focuses the plurality of dispersion beams towards the focal plane array to yield data. The focal plane array detector transmits the data. The processor receives the data.

To reduce current consumption while reducing an error in an image signal.SOLUTION: A photoelectric conversion device in a disclosure has: an avalanche photodiode; a pulse generation unit that converts an output from the avalanche photodiode into a pulse signal; a pulse count unit that counts the pulse signals and outputs a pulse count value; a time count unit that outputs a time count value representing the time from when the pulse generation unit starts the operation; an output unit that, when the pulse count value does not exceed a threshold, outputs the pulse count value, and when the pulse count value exceeds the threshold, ends the counting in the pulse count unit and outputs the time count value at the time point when the pulse count value exceeds the threshold; and a threshold arithmetic unit that calculates the threshold by using the time count value.SELECTED DRAWING: Figure 6

An ambient light sensor comprising at least three main channel sensing units and at least one cooperative channel sensing unit. Each main channel sensing unit includes a filter and a photosensitive element, with the filter positioned on the light receiving path of the photosensitive element, wherein the filter of at least one main channel sensing unit is an absorptive filter. Each cooperative channel sensing unit includes a filter and a photosensitive element, with the filter positioned on the light receiving path of the photosensitive element, wherein the filter of at least one cooperative channel sensing unit is an interference filter. This configuration effectively controls the error range of spectral reproduction results in ambient light sensor products affected by process variations, thereby improving product yield.

An optical detector unit (10) comprising an optical sensor (16) arranged in a chamber (14) having an aperture (18) in a housing (12), the optical sensor (16) being arranged to detect photons received through the aperture (18), where the optical sensor (16) comprises a plurality of sensor channels (44) arranged to receive photons through the aperture (18). Each channel (44) comprises a sensor pixel (38) and an optical filter (42) associated with the sensor pixel (38), each channel should be implemented to perform a UV index determination with higher accuracy and data reliability. According to the invention, this is achieved in that at least two of the channels (44), in one preferred embodiment, are designed for three channels as UVI measurement channels (44), each UVI measurement channel (44) having a spectral responsivity with a peak wavelength between 280 nm and 370 nm.

An optical sensor circuit for improved background signal cancellation in a musical instrument pickup. An operational amplifier is configured as a transimpedance amplifier (TIA). The TIA is electrically coupled to a first photodetector and a second photodetector in a series connection wherein the anode of the first photodetector and the cathode of the second photodetector are electrically coupled to define a connection node that is electrically coupled to an input of the TIA. In this configuration, symmetric in-band and out-of-band background optical signals and symmetric DC signals received by the pickup are negated. Asymmetric non-DC signals that are output from the photodetectors are passed to the input of the TIA as a signal of interest generated at the connection node.

A light intensity measuring device for an ultraviolet disinfection chamber and a related method are provided. The light intensity measuring device for the ultraviolet disinfection chamber includes a base, a photocell array rotatably arranged at the base and configured to simultaneously measure the ultraviolet light intensity in the ultraviolet disinfection chamber at multiple points, and a supporting component arranged at the chamber top of the photocell array.

Measuring holographic replay field, comprising: forming holographic replay field (509, 609, Fig. 8; 809) at plane comprising housing, wherein holographic replay field comprises image area (511, 611, F