112 results about "Light detector" patented technology

Methods and systems for in-fluid testing of electro optic liquid sensors are provided. The electro optic sensor has a light source and a light detector such that a first power state is applied to the light source to generate a first light for determining whether liquid is present within the electro optic sensor. Based on a determination that liquid is present within the electro optic sensor, a second power state is applied to the light source for generating a second light. The second power state having higher power over a shorter period of time than the first power state. The second light generated from the light source is reflected and the reflected second light is received at the light detector. The reflected second light is compared to a pulse current threshold value to determine whether the electro optic sensor is functioning properly.

This disclosure relates to probe cards and methods for inspecting light-emitting diodes (LEDs) using the same. According to one aspect of this disclosure, the probe card includes: a probe substrate; a photodetector unit disposed on one surface of the probe substrate; and an electrode unit disposed on the photodetector unit and including a first sheath electrode and a second sheath electrode, the second sheath electrode including a through-hole overlapping the photodetector unit. Thus, the through-hole is formed in the second sheath electrode to allow light from the LED to be incident on the photodetector unit, and the electrode unit and the photodetector unit can simultaneously inspect the LED.

A method for processing a plurality of bird eggs, particularly unfertilized eggs, comprising: a step of transporting a first egg (E1) having a first eggshell color and a second egg (E2) having a second eggshell color along a transport path, wherein the first eggshell color is different from the second eggshell color; a step of illuminating the first egg (E1) with an illumination beam (B) of infrared light, wherein at least a portion of the light is transmitted through the egg (E1) and detected by a near-infrared light detector (5); a step of illuminating the second egg (E2) with an illumination beam (B) of near-infrared light, wherein at least a portion of the light is transmitted through the egg (E2) and detected by a near-infrared light detector (5); and to determine the shell condition of each egg (E1, E2), the step of processing the light detection result of the infrared light detector (5) is included, and the detection of the illumination and / or transmitted light of the eggs (E1, E2) is performed under substantially the same illumination and / or detection conditions, respectively.

The light detection unit (23) includes a light detector (31) for detecting light, a housing container (71) that is cylindrical and houses the light detector (31), and a flexible substrate (73) on which a signal processing circuit including an A / D converter (33) that converts a light signal detected by the light detector (31) from an analog signal to a digital signal is mounted, the flexible substrate (73) being disposed in a bent and deformed state inside the housing container (71).

An on-chip visible light signal detector based on the photoimpedance effect of polymer electrolyte belongs to the field of functional photonic chip technology. It consists of a substrate layer, a lower cladding layer, a lower metal layer, a polymer grooved layer, an ion-polymer electrolyte core layer, and an upper metal layer, and the device is a MIM structure. The ion-polymer electrolyte core layer has an inverted ridge waveguide structure. The polymer electrolyte material PIL / PBI exhibits a photoimpedance effect; that is, when the detected optical signal propagates in the inverted ridge waveguide, it interacts with the polymer electrolyte, converting light energy into heat energy, increasing the concentration and activity of free ions inside the PIL / PBI, thereby changing its impedance value. This invention solves the problems of single detection dimension and insufficient responsivity in existing on-chip visible light detectors, realizing the detection of three dimensions of optical signal: polarization state, wavelength, and power. It has advantages such as fast response speed, simple fabrication process, low cost, small size, and high integrability.

An atomic oscillator of the present disclosure includes: a gas cell in which alkali metal atoms are encapsulated; a light generator that applies an irradiation light having at least two different frequency components to the gas cell; a light detector that detects a transmitted light having transmitted by the gas cell; and a controller that determines a resonance frequency of the alkali metal atoms based on a light amount of the transmitted light by the gas cell and controls an oscillation frequency based on the determined resonance frequency. The irradiation light is applied by two irradiation methods in which characteristics of change in the resonance frequency due to change in intensity of the irradiation light are mutually different. The controller controls the oscillation frequency based on a result of comparison between the resonance frequencies when the irradiation light is applied to the gas cell by the two irradiation methods, respectively.

A biological fluid processing device includes pump and valve systems, a controller, and an optical detection assembly. During a biological fluid processing procedure, the controller controls the operation of the pump and valve systems to separate a cell-containing fluid from the blood of a blood source and controls the optical detection assembly to emit light through the cell-containing fluid. The controller receives signals from the optical detection assembly that are indicative of the intensity of light that has passed through the cell-containing fluid. The controller receives or calculates an adjustment factor that is derived from historical data reflecting a cell collection procedure previously executed for the same blood source in which the same type of cell was collected. The controller determines an adjusted cell concentration of the cell-containing fluid based at least in part on the signals from the light detector and the adjustment factor.

According to an aspect there is provided an apparatus for Raman light detection, said apparatus comprising: an illumination unit, configured to provide a wavelength modulation for generating and outputting wavelength modulated laser light towards a sample for inducing generation of Raman scattered light from the sample; a wavelength filter for filtering the Raman scattered light; and a light detector, configured to receive the Raman scattered light filtered by the wavelength filter and to provide an instantaneous response signal dependent on an intensity of the received Raman scattered light.

The present application relates to the field of spectral analysis, and relates to an absorption spectrometer and a direct measurement method of absorption light intensity. The present application provides an absorption spectrometer which can directly measure absorption light intensity. The absorption spectrometer comprises a light source assembly, a sample cell, a semi-transparent mirror and a light detector. The absorption spectrometer also provides a direct measurement method of absorption light intensity. In the front light path of two coherent lights, a same sample cell is placed in each light path. The optical path of one light is adjusted until the output of the light detector included in the absorption spectrometer is minimum. Then, a sample to be measured is added to one sample cell, and a blank solution is added to the other sample cell. At this time, the light detector measures the intensity of the remaining light which is not completely cancelled after the convergence of the two lights, i.e. the intensity of the light absorbed by the sample to be measured, i.e. the absorption light intensity. The absorption spectrometer provided by the present application detects absorption light intensity, while the traditional absorption spectrometer detects absorbance. Changing the detection of absorbance to the detection of absorption light intensity can avoid the quantum noise of a large signal from drowning out a weak signal, thereby greatly improving the detection sensitivity of the absorption spectrometer.

A LiDAR system includes alight emitter, a light detector, and a controller. The controller is programmed to: activate the light emitter to emit a series of shots into a field of view of the light detector; activate the light detector to detect shots reflected from an object in the field of view; record the detected shots from a first subset of the series of shots; group a second subset of the series of shots not in the first subset; and based on the detected shots from the second subset of the series of shots, identify an object moving in the field of view.

The utility model provides a kind of high detection accuracy silica gel button silk screen visual light inspection machine, it is related to silica gel button silk screen visual light inspection technical field, including base, classification mechanism, alignment mechanism and measuring mechanism, the classification mechanism includes classification box and inclined plate, the lower surface of inclined plate is fixedly connected with the upper surface of classification box, the classification box and inclined plate are used to classify and collect the silica gel button silk screen of detection, it is convenient to unify arrangement in later period, in the utility model, the silica gel button silk screen after detection can be according to detection result fall in specified classification box by inclined plate, so that it can unify arrangement rework to silica gel button after detection, while using pressing plate and adjusting plate can adjust the orientation of silica gel button silk screen, and measuring plate is convenient to measure the orientation of silica gel button silk screen, so that it can improve the detection accuracy of silica gel button silk screen.

A large-aperture reflective zoom and laser communication integrated camera is disclosed, relating to the fields of optoelectronic imaging and laser communication technology. It addresses the technological gap where liquid zoom lenses cannot be applied to large-aperture RC systems, and the problem of relying on additional components for integrated visible light imaging and laser communication, making it difficult to balance lightweight design and high performance. The camera consists only of a primary mirror, a liquid zoom lens array, a grating film, a visible light detector, and an infrared detector. The front of the liquid zoom lens integrates a multi-layer liquid zoom lens array, with each layer having a different focal length. Independent drive circuits electrically control and adjust each lens layer to eliminate aberrations and adjust the focal length for optical systems of different apertures. The grating film on the back exhibits high reflectivity to visible light and high transmittance to 1550nm laser light, enabling visible light to form an RC structure imaging optical path, while the laser light is transmitted to complete communication. This invention can be widely applied in aerospace, aviation, and ground observation scenarios.

A measuring device, measuring method, and procedure are provided to measure the spectrum of pulsed light with higher precision. The measuring device (10) includes: a spectrometer (11) that extracts specific wavelength components from incident light; a photodetector (13) that outputs a signal corresponding to the intensity of the extracted wavelength components; and a processor (16) wherein the processor (16) acquires a first signal and a second signal for each of a plurality of wavelength intervals that divide the wavelength range of the object to be measured, and outputs the difference between the second signal and the first signal as the spectrum of the corresponding wavelength interval, wherein the first signal is output from the photodetector in a light-shielded state, and the second signal is output from the photodetector in an unshielded state corresponding to the intensity of the incident light.

The present invention relates to a polarimetric (PT) measurement device for anisotropic quantities of a medium (M), comprising a spectrally structured light source (SSS) delivering a series of pulses with reference spectral grooves, spectral polarization coding means (MPG) configured to spectrally polarize each of the reference pulses delivered by the light source with a measurement phase delay identical to the reference phase delay, a light detector (D) configured to capture the light intensity reflected by the medium (M) for each of the reference pulses delivered by the light source, and a measurement unit configured to determine the anisotropic quantities of the medium (M) from the images captured by the detector. Figure 3

An electronic device may have a touch sensitive display that is insensitive to the presence of moisture. The display may have a two-dimensional optical touch sensor that gathers touch input while the electronic device is immersed in water or otherwise exposed to moisture. The optical touch sensor may include light sources and light detectors. The light sources and the light sensors may be mounted on a common substrate with an array of image pixels. The image pixels may be formed by crystalline semiconductor light-emitting diode dies. Angular filters may be included over the light sources and / or the light detectors to improve discrimination between a user's finger and water droplets. The angular filters may be on-axis light blocking angular filters or off-axis light blocking angular filters.

The invention relates to a sensor device (10) for detecting a physical quantity (110) acting on the sensor device (10), wherein the sensor device (10) comprises an optical source (20), an optical detector (30), a sensor element (40) and a processing unit (50), wherein the processing unit (50) is configured to emit a light beam (21) by means of the optical source (20) within an optical path (25) towards the optical detector (30), wherein the sensor element (40) at least partially encompasses the optical path (25) and is configured such that, in the event of at least partial deformation and / or at least partial deflection and / or at least partial change of a physical property of the sensor element (40), which occurs in particular due to a change in the physical quantity (110) to be measured by the sensor device (10), the optical path (25) changes at least partially.and wherein the processing unit (50) is configured to detect a change in the light beam (21) passing through the optical path (25) by means of the optical detector (30) and to determine the physical quantity (110) as a function of this change, wherein the sensor device (10) is configured such that the physical quantity (110) can be detected in at least a first measuring range and a second measuring range, wherein the first measuring range differs at least partially from the second measuring range.

The application discloses a kind of multiband SPAD light detection structures for laser radar, belong to laser radar with light detector field.The light detection structure includes: P substrate layer, BN buried layer, be located on the upper end of the P substrate layer, and with the deep P well layer being located on the upper end thereof, constitute third avalanche junction;Deep P well layer, be located on the upper end of the BN buried layer, and with the second N well layer being located on the upper end close to the end portion thereof, constitute second avalanche junction;First N well layer, be located on the upper end of the deep P well layer, and with the PB layer being located on the upper end close to the end portion thereof, constitute first avalanche junction.The application is integrated three functional differentiation avalanche junction, respectively realize the accurate capture of short wavelength, medium wavelength and long wavelength photon, three junctions work together can achieve the efficient absorption of full-band photon, greatly improve the detection efficiency of device in complex light environment to multiband photon.

An easy-to-use, compact, and relatively inexpensive non-contact surface property evaluation device is provided. The surface property evaluation device includes: a photodetector (240) for receiving and detecting scattered light from a target object; and a single optical aperture (250) or an array of optical apertures (250) arranged to face a light-receiving surface (242) of the photodetector (240). The relative positions of the optical apertures (250) and the photodetector (240) are fixed such that the gap between the optical apertures (250) and the light-receiving surface (242) of the photodetector (240) is constant. The surface properties of the target object are evaluated based on the intensity distribution of the light detected by the photodetector (240).

The application relates to the technical field of photovoltaic panel trackers, in particular to an intelligent tracker for angle adjustment of a photovoltaic panel, which comprises a light-pursuing detector, a fixed base and a universal adjusting support arranged on the fixed base, the universal adjusting support is composed of a transverse adjusting frame and a longitudinal adjusting frame, the transverse adjusting frame is rotatably arranged on the fixed base, and the longitudinal adjusting frame is hingedly arranged on the transverse adjusting frame; a transverse driving motor for driving the transverse adjusting frame to horizontally rotate is arranged on the transverse adjusting frame, and a longitudinal driving motor for driving the longitudinal adjusting frame to pitch and rotate is arranged on the transverse adjusting frame; a connecting support for mounting the photovoltaic panel is fixed to the top of the longitudinal adjusting frame, the light-pursuing detector is connected with a controller, the controller controls the transverse driving motor and the longitudinal driving motor according to the light signal collected by the light-pursuing detector, and the double-axis angle intelligent adjustment of the photovoltaic panel is realized.

The application relates to an integrated chip with power monitoring and a preparation method thereof, and belongs to the field of optical communication device manufacturing. The integrated chip comprises a substrate layer and a multilayer semiconductor structure which is epitaxially grown on the substrate layer in sequence, and the multilayer semiconductor structure at least comprises a lower limiting layer, an active layer, an upper limiting layer and an upper contact layer; wherein the upper contact layer and part of the layer structure below the upper contact layer are etched to form a physically separated mesa structure on the integrated chip, and a semiconductor laser and a semiconductor light detector are physically separated in the width direction; the semiconductor laser is configured to generate laser when a first bias voltage is applied, and the semiconductor light detector is configured to convert a received optical signal into an electrical signal when a second bias voltage is applied. The integrated chip has the advantages of realizing power monitoring without external optical path, simplifying the packaging structure, reducing the cost and improving the system stability.

The present application relates to the technical field of induction lamps, and discloses an ambient light detector and an induction lighting device comprising same. The ambient light detector comprises: a light concentrating member, which is a reflector cup, wherein a concave surface of the reflector cup is a reflective surface, and the edge of a large end of the reflector cup is parallel to the main axis of the reflector cup; and a light sensing receiver, which is mounted at a small end of the reflector cup, wherein a light receiving surface of the light sensing receiver faces the reflector cup. By means of the cooperation of the light converging member and the light sensing receiver, light within a detection angle can be converged and enhanced, and light outside the detection range can be automatically blocked and is not received, so that a clear detection boundary is realized. The light sensing receiver can accurately detect a change in external ambient light by receiving a light signal that is converged and enhanced and has a clear boundary within a large angle range, thereby greatly reducing an environmental error when the brightness of a lamp is adjusted on the basis of the light signal received by the light sensing receiver.

A head-mounted device may have a head-mounted support structure. Gaze tracking systems may be supported by the support structure so that the gaze of a user may be monitored. Lenses may be supported by the support structure. Display systems may provide computer-generated images to the user while the user is viewing real-world objects through the lenses. The gaze tracking systems may include image-sensor-based systems such as glint-based systems. A glint-based gaze tracking system may include light-emitting devices that emit light beams that create eye glints on the surface of a user's eyes and may include an image sensor that measures the eye glints to gather information on the user's gaze. A low-power gaze tracking system may be included in the head-mounted device. The low-power gaze tracking system may use light detectors to measure the magnitudes of respective light reflections of the light beams.

The optical computing unit of the present application is used for optical computation, and is connected with a light source, an electric control unit, other optical computing units or a light detector, and comprises: an optical waveguide connected with the light source, other optical computing units or the light detector, used for transmitting optical signals; and a plurality of modulation electrodes arranged on the optical waveguide, connected with the electric control unit, receiving electric signals from the electric control unit, and changing the refractive index of the optical waveguide.

The present application relates to light guide plate manufacturing technical field, especially electronic light guide plate warping degree detection workbench, including box, still including: sliding frame, between the left and right sides of the upper part of the box is connected in the longitudinal sliding type, for bearing laser detector, drive mechanism, installed on the box, for driving the sliding frame moves in the longitudinal direction, laser detector body, through the electric slide rail slidingly connected to the sliding frame, for moving left and right under the drive of electric slide rail to scan detection light guide plate, this workbench through setting multiple longitudinal adjustable sliding frame and multiple horizontal sliding slide block, realize the two-dimensional flexible layout of air floating support point, the staff can choose the support point position and quantity according to the size of light guide plate, both meet the stability demand of oversized product, and can avoid the weak parts such as hollow, solve the poor adaptability problem of traditional fixed air floating support.

A kind of fluorescence imaging system, fluorescence imaging direction and gene sequencer, fluorescence imaging system includes light source, first dichroic mirror, second dichroic mirror, third dichroic mirror, first light detector and second light detector, first dichroic mirror is used to transmit first laser and reflect second laser, and for transmitting first fluorescence and reflecting second fluorescence.Due to the first laser and second laser are divided into two laser for excitation, the fluorescence generated by the first laser and second laser excitation can also be collected in two ways, four light paths can be combined and split, can adopt one or more single-pass single-reflection dichroic mirror combination to form excitation light path and imaging light path, the film layer in single-pass single-reflection dichroic mirror only needs to be set as two structures, so that the structure of single-pass single-reflection dichroic mirror is relatively simple, easy to generate manufacturing, can reduce the cost of imaging system, and using single-pass single-reflection dichroic mirror can also simplify light path.

This invention discloses a large-diameter bidirectional mixed-phase metering device and method for injection and production in the same pipe, relating to the field of industrial mixed-phase fluid measurement technology. The device includes a main body, a sunshade, a non-radioactive composite quantum light source, a quantum light detector, a quantum light flow computer, a front differential pressure tap, a rear differential pressure tap, and a power module. The main body has an internal throttling channel. The non-radioactive composite quantum light source emits quantum light beams of four energy levels. Based on quantum precision metering multiphase detection technology, it adopts quantum precision measurement technology, an internal throttling channel, and a dual differential pressure structure to achieve functions such as large diameter and bidirectional injection and production in the same pipe, enabling high-precision real-time monitoring and metering. The quantum light source emits photons of different energies. The absorption of photons by matter causes the photon energy to attenuate after passing through the matter. Combining the different absorption degrees of photon energy by different substances, it achieves high-flow-rate, high-gas-content, multiphase, real-time, and accurate bidirectional metering of gas storage injection and production.

The utility model discloses a measuring equipment technical field a christmas lamp detector, including left face cover, right face cover, fixed base, panel, button switch cap, zero fire line pole piece, lamp holder contact piece, button switch, the utility model solves the problem that whole machine yield is not high, the utility model discloses through the direct connection welding of zero fire line pole piece, lamp holder contact piece and high -voltage repair circuit board, avoided the problem that wire contact is not good and wire occupies the space greatly, make the welding convenient, yield is high, and the efficiency is high, and through the high -voltage repair circuit module, low -voltage detection circuit module separates the assembly, separates the test, makes the module not to interfere with each other to realize the improvement whole machine yield, promote the efficiency, reduce whole machine test bad rate.

A detection device according to an embodiment of the present disclosure includes two or more frame bodies that can be connected to each other, a first light detector that can be connected to the frame bodies, and a second light detector that can be connected to the frame bodies. The frame bodies have a first connection portion that can be connected to the first light detector, a second connection portion that can be connected to the second light detector, and a third opening portion that faces the first connection portion. At least one of the frame bodies has a dichroic mirror disposed between the first opening portion and the third opening portion. The dichroic mirror transmits light having a first wavelength of light incident from the third opening portion to the first opening portion and reflects light having a second wavelength of the incident light to the second opening portion.