1956 results about "Light detector" patented technology

A non-contact temperature measurement system for calculating estimated core body temperature is disclosed. The temperature measurement system can include a sensor that can detect the temperature of a patient and the temperature of ambient surrounding. The temperature of the patient and the ambient temperature can then be used to determine a core body temperature. The temperature measurement system includes an optical module having a light emitter and a light detector. The light emitter emits a beam of light towards the patient and the light detector detects a beam of light reflected by the patient. The reflected beam is analyzed to determine a distance between the temperature measurement system and the patient.

A wearable system can include an electronic device configured to measure one or more physiological parameters of a patient and a wearable device configured to operably position the electronic device. The electronic device can have at least one light emitter and at least one light detector and be configured to measure at least a pulse oximetry measurement. The wearable device can have a main body with a cavity configured to position the electronic device, a securement portion connected to the main body and configured to secure the main body to the patient, and storage component configured to store patient identification data associated with the patient. When the electronic device and the wearable device are secured to one another, the patient identification data can be transferred from the wearable device to the electronic device.

The invention relates to the field of particle size distribution measurement, in particular to a particle size distribution measurement method and system based on machine learning and a light scattering method.The method comprises the steps that a to-be-measured particle sample is irradiated through a light source, and meanwhile light scattering intensity data of different scattering angles and different wavelengths are collected through a multi-angle scattered light detector; constructing a multi-modal deep learning model, and forming an integrated learning architecture in combination with a support vector machine model and a random forest model; inputting the preprocessed multi-wavelength light scattering intensity data into the trained integrated learning architecture to obtain a preliminary particle size distribution result of the to-be-detected particle sample; based on the improved Mie scattering theory, a high-precision theoretical model considering the particle shape, the refractive index, the surface roughness and the internal structure is constructed; an improved Bayesian optimization algorithm is adopted, and the initial particle size distribution result is optimized and adjusted by minimizing the error between the theoretical light scattering intensity and the actually collected light scattering intensity, so that a corrected particle size distribution result is obtained.

Disclosed herein is a sensor device for volumetric capnography. The sensor device is coupled to an adapter comprising a housing that encloses a measurement volume. The adapter is configured for gas flow along a first length axis, which aligns with a second length axis of the sensor device. The device includes an IR light source and an IR light detector, positioned on opposite sides of the housing. The IR light source emits IR light toward the detector across the measurement volume. The sensor device also includes a first ultrasonic transceiver in contact with the adapter and configured to emit ultrasound centered at a first position along the second length axis, directed partly along the axis and partly transversely. A second ultrasonic transceiver, also in contact with the adapter, emits ultrasound centered at a second position along the second length axis, directed partly opposite to the first direction and partly transversely.

The invention discloses a multi-mode end point detection system and method for a semiconductor dry process, and relates to the field of gas concentration detection. A gas absorption cell; the reference light path adjusting unit comprises an adjustable attenuator used for adjusting signals; the first photoelectric detector is used for detecting a transmission signal; the second photoelectric detector is used for detecting a reference signal; the lateral scattered light detector is used for detecting a scattered signal of the particulate matters in the gas absorption tank; and the signal processing unit is in signal connection with the first photoelectric detector, the second photoelectric detector and the lateral scattering light detector and is used for performing compensation calculation on the transmission signal based on the reference signal and the scattering signal so as to obtain a corrected gas absorption signal. By adopting the scheme, measurement signal distortion caused by optical mirror surface pollution and particulate matter scattering interference in a semiconductor tail gas optical detection technology is avoided.

Systems, methods, and non-transitory computer-readable media containing instructions are disclosed for detecting and utilizing facial skin micro-motion. In some non-limiting embodiments, detection of facial skin micro-motion occurs using a speech detection system that may include a wearable housing, a light source (coherent light source or incoherent light source), a light detector, and at least one processor. The one or more processors may be configured to analyze light reflections received from the facial region to determine facial skin micromotion, and extract meanings from the determined facial skin micromotion. Examples of meanings that may be extracted from the determined facial skin micromotion may include words spoken by the individual (silent or voiced), an identity of the individual, an emotional state of the individual, a heart rate of the individual, a respiratory rate of the individual, or any other biometric, emotion or speech related indicator.

Disclosed herein are electronic devices, detectors, systems, and methods for estimating a distance to an exterior object. Light pulses from an emitter on the electronic device or detector are received by at least one pair of light detectors positioned at different distances from the emitter. One or more ratios of strengths of signals of the light detectors are used to determine the object's distance. The ratios may be compared to a proximity curve to obtain the object's distance. If the ratio exceeds a critical distance value, a determination may be made that the exterior object has been separated from the electronic device. Wearable electronic devices, such as smart watches, may use the detectors, systems, and methods to determine if a user is wearing the electronic device.

The invention relates to the technical field of focus testing, and particularly discloses a laser cutting head zero focus testing method based on reflected light detection, which comprises the following steps: S1, acquiring an optical signal reflected by a processed plate in a cutting process; s2, adjusting the position of a focusing lens to enable a laser focus to move along the optical axis direction relative to the surface of the plate; s3, recording reflected light intensity values corresponding to different focus positions, obtaining a function relationship between the reflected light intensity and the focus positions, and drawing a light intensity-focus position relationship curve; s4, determining a corresponding focus position when the intensity of the reflected light reaches the maximum value as an optical zero focus position of the system; s5, automatically recording and storing an optical zero focus position; the reflected light detector arranged in the cutting head or the laser reads the intensity of the reflected light in the cutting process, the function relation between the focus position and the intensity of the reflected light can be established, and the focus position corresponding to the maximum value of the intensity of the reflected light is the most accurate optical zero focus position.

A touch sensing apparatus is disclosed, comprising a light transmissive panel that defines a touch surface, an opposite rear surface, and panel sides extending between the touch surface and rear surface. The panel sides define a perimeter of the light transmissive panel. The touch sensing apparatus comprises a plurality of light emitters and detectors arranged along the perimeter and adjacent the panel sides, a light guide arranged along the perimeter and having a first reflective surface comprising a diffusive light scattering element. The light emitters are arranged to emit a respective beam of light onto the diffusive light scattering element so as to generate propagating light that diffusively propagates above the touch surface, wherein the light detectors are arranged to receive detection light generated as said propagating light impinges on the diffusive light scattering element, and wherein the diffusive light scattering element is arranged at least partly outside the panel sides and extending at least partly above the touch surface.

An optical detection assembly for monitoring a fluid includes a light source, a light detector array, and a controller. The controller receives signals from the light detector array that are indicative of the intensity of light received by the light detector array after the light has passed through the fluid. The controller generates a scattering profile based on the signals, with the scattering profile including rising and falling edges each having a slope. The controller calculates one or both slopes and determines the platelet mass index (for a platelet-containing fluid) and / or the concentration of a substance in the fluid based on said slope(s). The optical detection assembly may also be used to analyze a reference fluid having a known concentration of the substance, with signals received by the controller when analyzing the reference fluid being a factor when determining the concentration of the substance in the fluid of interest.

A system for multimodal detection is provided. The system comprises a light collection and distribution device configured to perform at least one of collecting light signals from a field-of-view (FOV) and distributing the light signals to a plurality of detectors. The light signals have a plurality of wavelengths comprising at least a first wavelength and a second wavelength. The system further comprises a multimodal sensor comprising the plurality of detectors. The plurality of detectors comprises at least a light detector of a first type and a light detector of a second type. The light detector of the first type is configured to detect light signals having a first light characteristic. The light detector of the first type is configured to perform distance measuring based on light signals having the first wavelength. The light detector of the second type is configured to detect light signals having a second light characteristic.

Systems, methods, and non-transitory computer-readable media including instructions for detecting and utilizing facial skin micromovements are disclosed. In some non-limiting embodiments, the detection of the facial skin micromovements occurs using a speech detection system that may include a wearable housing, a light source (either a coherent light source or a non-coherent light source), a light detector, and at least one processor. One or more processors may be configured to analyze light reflections received from a facial region to determine the facial skin micromovements, and extract meaning from the determined facial skin micromovements. Examples of meaning that may be extracted from the determined facial skin micromovements may include words spoken by the individual (either silently spoken or vocally spoken), an identification of the individual, an emotional state of the individual, a heart rate of the individual, a respiration rate of the individual, or any other biometric, emotion, or speech-related indicator.

This flow cytometer includes a flow path through which an observation object flows with a fluid; an optical illumination system including a spatial optical modulation device, and a first optical element; and an optical detection system including a first light detector, wherein the optical illumination system further includes a first spatial filter disposed in a first optical path between a light source and an image position of light imaged in the flow path by the first optical element and having a first region which hinders traveling of light emitted from the light source towards the observation object, the optical detection system further includes a second light detector disposed in a second optical path between the first light detector and the image position and having a second region which directs the light modulated by the observation object towards the first light detector, and the position of the first region and the position of the second region are in a substantially optically conjugate relationship.

A multifunctional earpiece comprising an ear-mountable housing, a speaker integrated with the ear-mountable housing for presenting sound, a light source integrated with the ear-mountable housing for projecting light toward skin of the wearer's face, a light detector integrated with the ear-mountable housing and configured to receive reflections from the skin corresponding to facial skin micromovements indicative of prevocalized words of the wearer, and wherein the multifunctional earpiece is configured to simultaneously present the sound through the speaker, project the light toward the skin, and detect the received reflections indicative of the prevocalized words.

A device for fluorescence-based imaging and monitoring of a target is provided. The device includes a light source emitting light for illuminating the target, the emitted light including at least one wavelength or wavelength band causing at least one biomarker associated with the target to fluoresce, and a light detector for detecting the fluorescence.

The invention provides a data acquisition method and device based on combination of an XAFS and ATR-SEIRAS. The device comprises an in-situ pool, an infrared test system and an XAFS test system, the infrared test system is used for acquiring ATR-SEIRAS data of a sample to be tested, and the infrared test system comprises an infrared light source and an infrared light detector; the XAFS testing system is used for acquiring XAFS data of a sample to be tested, the XAFS testing system comprises an X-ray light source, a front ionization chamber and an X-ray fluorescence detector, and the front ionization chamber is used for measuring the intensity of incident X rays. According to the data acquisition method and device based on combination of the XAFS and the ATR-SEIRAS, ATR-SEIRAS data of the to-be-tested sample is obtained based on the infrared test system, XAFS data of the to-be-tested sample is obtained based on the XAFS test system, dynamic association between the surface interface active structure evolution law of the to-be-tested sample and the physical and chemical behaviors of a reaction intermediate under the reaction condition can be achieved, and the data acquisition accuracy is improved. Therefore, the structure-activity mechanism of the reduction process of the electro-catalysis # imgabs0 # is accurately disclosed.

The invention discloses a large-view-field wireless light transmission method for an unmanned aerial vehicle, and the method comprises the following steps: S100, enabling an MPPC light detector to enable a plurality of detection units to be distributed in a space, carrying out the whole-region LED array layout, increasing the effective area for receiving a light signal, and improving the geometric reception rate; s200, collecting channel data at the same time by using a multi-channel gain algorithm to realize signal acquisition and processing; s300, through an array structure and multi-channel data fusion analysis, target detection and perception performance is improved; the invention further discloses a large-view-field wireless optical transmission system for the unmanned aerial vehicle. According to the technical scheme, horizontal 360-degree full-area coverage of the radiation direction of the LED array can be achieved, and the radiation range of the LED array is remarkably expanded; an array multi-pixel photoelectric detector receiving technology is used for coping with dynamic receiving, so that possibility is provided for realizing communication in motion of the unmanned aerial vehicle; the signal receiving performance is effectively improved, and the method has more excellent performance in the aspects of processing weak light signals and dynamically receiving scenes.

Aspects of the present disclosure relate generally to night-vision systems and more specifically to an integrated flex circuit. One example illustrated herein includes a method of upgrading a night-vision system. The method may include attaching a flex circuit to an intensifier module, in which the flex circuit includes one or more light detectors. The method may include inserting the intensifier module into a housing and folding the flex circuit to expose the one or more light detectors.

Systems, methods, and non-transitory computer-readable media including instructions for detecting and utilizing facial skin micromovements are disclosed. In some non-limiting embodiments, the detection of the facial skin micromovements occurs using a speech detection system that may include a wearable housing, a light source (either a coherent light source or a non-coherent light source), a light detector, and at least one processor. One or more processors may be configured to analyze light reflections received from a facial region to determine the facial skin micromovements, and extract meaning from the determined facial skin micromovements. Examples of meaning that may be extracted from the determined facial skin micromovements may include words spoken by the individual (either silently spoken or vocally spoken), an identification of the individual, an emotional state of the individual, a heart rate of the individual, a respiration rate of the individual, or any other biometric, emotion, or speech-related indicator.

A device for fluorescence-based imaging and monitoring of a target is provided. The device includes a light source emitting light for illuminating the target, the emitted light including at least one wavelength or wavelength band causing at least one biomarker associated with the target to fluoresce, and a light detector for detecting the fluorescence.

Methods and device for obtaining microscopic digital images, using an emission module, a detection module and an observation zone arranged between said modules, the method comprises arranging a sample in said observation zone and:-determining at least one target light emitter of said emission module;-determining at least one target detection zone of said detection module each zone corresponding to one target light emitter;-activating the target light emitter(s) and reading the light detectors of the target detection zone(s);-determining a plurality of target pixels of said digital image and obtaining each of said target pixels from said reading of said target light detectors;and, iterating until all the image pixels of said digital image are obtained, thus obtaining said microscopic digital image of said sample.

A device for fluorescence-based imaging and monitoring of a target is provided. The device includes a light source emitting light for illuminating the target, the emitted light including at least one wavelength or wavelength band causing at least one biomarker associated with the target to fluoresce, and a light detector for detecting the fluorescence.

A thickness-distribution measurement device includes a light source; a light detector; and a control device. The light source irradiates a region of an object being conveyed with light, the region extending in a width direction. The light detector detects emitted light that has transmitted through the object. The control device obtains information on a distribution of a relative thickness of the object in the width direction based on a detection result in the light detector. The light detector includes an image sensor and a lens array. The image sensor includes a plurality of pixels arranged in the width direction, and detects an intensity of the emitted light for each pixel. The lens array includes a plurality of lenses having an equal magnification and arranged along the width direction, and collects the emitted light and forms an image of the emitted light on the image sensor.

Embodiments herein relate to a system for detecting bubbles in a fluid. In an embodiment, a fluidic system ventilation detector having an optical bubble sensor is included. The optical bubble sensor may include a light source, a light detector, and a sensor controller. The sensor controller may be in signal communication with the light detector and may be configured to detect bubbles based on a signal received from the light detector. The sensor controller may be further configured to estimate a throughput of the fluid based on the detected bubbles. Other embodiments are also included herein.

Light-based non-invasive blood pressure measurement systems and methods that include a sensor having a light emitter and a light detector are disclosed. The light emitter emitting coherent or non-coherent light that is transmitted into and reflected from the tissues of the patient, including reflecting from moving blood. The light reflected from the moving blood being having a Doppler shift and detected by the light detector to generate a noninvasive blood pressure signal. The non-invasive blood pressure signal is processed to determine the instantaneous velocity of the blood. Additionally, pulse wave velocity data is obtained nearly, or substantially, simultaneously with the acquisition of the non-invasive blood pressure signal. Using the pulse wave velocity, the instantaneous velocity of the blood and a density of the blood, an instantaneous blood pressure can be determined.

Embodiments herein relate to water in fuel sensing systems that can be mounted on-vehicle. In an embodiment, a water in fuel sensing system is included having a light source, a light detector, and a sensor controller, wherein the sensor controller is in signal communication with the light detector and the sensor controller is configured to evaluate signals received from the light detector, identify water droplets based on the signals received from the light detector, record information regarding the classified water droplets, and generate an estimate of an amount of water in a fuel. Other embodiments are also included herein.

The invention discloses pipeline bending equipment and a using method thereof, and relates to the technical field of bending equipment.The pipeline bending equipment comprises an operation machine body, a curvature angle laser detector is installed on the side of the top end of the operation machine body, an arc-shaped electromagnetic guide rail is installed on the surface of the top end of the operation machine body, and a vertical guide rail is slidably connected into the arc-shaped electromagnetic guide rail; an annular electromagnetic guide rail is fixedly connected into the vertical guide rail through a sliding connecting rod, under cooperation of the bending regulation and control assembly, the local bending area of a pipeline is heated and softened, the springback phenomenon in the bending process is reduced, the bending quality and the bending efficiency are improved, the overall bending accuracy is guaranteed, and under cooperation of an anti-springback assembly, the bending accuracy is improved. According to the method, accurate adjustment is carried out according to actual pipeline bending requirements, it is ensured that the bending accuracy of the bent pipeline cannot be changed due to springback, and the influence that airtight butt joint cannot be accurately formed during follow-up installation butt joint is reduced.

The invention discloses a WS2 (Er < 3 + > + Yb < 3 + >) / WSe2 (Er < 3 + > + Yb < 3 + >) optical detector based on a rare earth ion co-doping technology, and relates to the field of a two-dimensional material rare earth ion co-doping technology and a two-dimensional material microcell fixed-point transfer technology, a WS2 (Er < 3 + > + Yb < 3 + >) layer synthesized by a chemical vapor deposition method is successfully transferred to a WSe2 (Er < 3 + > + Yb < 3 + >) surface layer by using a microcell fixed-point transfer method, and a WS2 (Er < + > Yb) / WSe2 (Er < + > Yb) vdW heterojunction is prepared; the method comprises the following steps: sequentially spin-coating LOR photoresist and S1805 photoresist on the surface of a sample 1, respectively carrying out soft baking treatment to obtain a sample 1, carrying out laser direct writing on a selected area to obtain a sample 2, removing metamorphic photoresist from the obtained sample 2 by using a developing solution, cleaning to obtain a sample 3, plating chromium and gold on the sample 3 by using a magnetron sputtering technology to obtain a sample 4, and carrying out drying to obtain a sample 5; and soaking the sample IV in acetone to dissolve the photoresist, and stripping a redundant metal layer under a microscope to obtain the Van der Waals heterojunction electrode device. Therefore, the invention provides the WS2 (Er < 3 + > + Yb < 3 + >) / WSe2 (Er < 3 + > + Yb < 3 + >) light detector based on the rare earth ion co-doping technology, the rare earth doping concentration of the two-dimensional material is improved, and excellent photoelectric properties of the WS2 (Er < 3 + > + Yb < 3 + >) and WSe2 (Er < 3 + > + Yb < 3 + >) two-dimensional semiconductor material are obtained.

The invention discloses a servo control method and system for a tracking turntable, and belongs to the technical field of tracking measurement. The method comprises the following steps: receiving tracking data, and setting a corresponding working mode flag bit after processing the tracking data; calling the tracking data by using the interrupt function, and generating a control quantity corresponding to the tracking data according to the working mode flag bit; a pulse width modulation signal corresponding to the control amount is generated. According to the invention, stable tracking measurement of an infrared and visible light detector on a target can be realized, and the servo control system for the tracking turntable integrates driving and control of a servo motor, so that the production, research and development cost is reduced.

A device for fluorescence-based imaging and monitoring of a target is provided. The device includes a light source emitting light for illuminating the target, the emitted light including at least one wavelength or wavelength band causing at least one biomarker associated with the target to fluoresce, and a light detector for detecting the fluorescence.