935 results about "Optical detectors" patented technology

The invention relates to the technical field of optical detection, in particular to an AOI automatic optical detector calibration method and system, and the method comprises the following steps: obtaining a standard color palette RGB reflection reference, collecting a measured value, calculating an offset contrast, extracting image brightness, generating a correction ratio, converting gray level, extracting abrupt change, screening anomalies, and analyzing a brightness trend to generate a finishing record. And formulating a rule matching correction output comparison table. According to the method, the accuracy and reliability of image detection are enhanced through detailed analysis and accurate correction of color offset and brightness difference, the scheme combines real-time light source data and image information, fine changes are effectively identified, the misjudgment rate is reduced, the accuracy of gray and color correction is improved through comprehensive analysis of light intensity offset and regional brightness trend, and the accuracy of image detection is improved. The detection efficiency and quality of a high-density circuit are ensured, the detailed calibration mechanism remarkably reduces detection errors especially in a high-precision environment, and product quality control and the stability of a production process are optimized.

An optical speckle receiver for receiving a speckle signal from a sample, the optical speckle receiver comprising an optical detector and an aperture and / or lens array. The aperture and array respectively comprise a plurality of apertures or lenses and is located between the sample and the optical detector such that the received speckle pattern is obtained from multiple discrete sample locations.

An optical detector system providing electrical output signals. The system includes an apertured surface and a transparent window, with a metasurface on the window's opposite side. The metasurface imparts spatially varying phase delay and / or amplitude or polarization modulation to deflect ILR based on their angle of incidence, producing exiting light rays. These rays are detected by a two-dimensional tetralateral position-sensing detector (TLD) with a single resistive photo-absorption layer and four electrodes. The TLD generates X-Y position signals proportional to the azimuth and elevation of the incoming ILR. A computer may be included to calculate these angular values from the position signals.

An entangled quantum state receiver includes an optical detector that generates an electrical signal having a signal characteristic in response to detection of a single photon. A first electrical circuit generating an electrical signal having a predetermined duration when the signal characteristic is present at the input. A clock generates a clock waveform with a period. A second electrical circuit generates a state value when the electrical signal has the predetermined duration during a cycle of the clock waveform. A processor is configured to determine received entangled state information from the state value and configured to adjust the clock period based on a background photon count at the optical detector.

In a general aspect, a quantum spectrum sensing system is presented. In some implementations, a quantum spectrum sensing system includes a laser system, a vapor cell sensor, and an optical detector. The laser system includes first and second lasers configured to generate a first and second laser signals. The laser system also includes first and second comb generators configured to produce first and second frequency comb signals based on the first and second laser signals, respectively. The laser system includes a frequency separator that can select frequency components of the second frequency comb signal and a frequency shifter that can shift the selected frequency components toward Rydberg states of a vapor. The vapor cell sensor can receive input optical signals from the laser system and produce output optical signals based on interactions of the vapor with the input optical signals. The optical detector can detect the output optical signals.

The invention relates to the technical field of optical detection, and provides a relative spectral responsivity adjustable optical detector and a use method thereof, the detector comprises an acquisition module, a dispersion module, an adjustment module, a collection module and a detection module which are sequentially arranged along an optical path; the acquisition module is used for acquiring incident light and converting the incident light into divergent, converged or parallel light beams; the dispersion module is used for carrying out dispersion on the light beams output by the acquisition module and carrying out spatial separation on the multi-color light beams according to wavelengths to form dispersion light bands; the adjusting module can dynamically adjust the reflectivity or transmittance of the region corresponding to each wavelength; the collection module is used for converging the adjusted dispersion light band again and transmitting the dispersion light band to the detection module; the detection module is used for receiving the converged light beams and converting the light beams into electric signals. According to the optical detector with the adjustable relative spectral responsivity, by introducing the dispersion module and the adjusting module, light intensity distribution modulation of a dispersion light band is achieved, and the relative spectral responsivity of the detector can be adjusted according to needs.

Various embodiments for detecting and rejecting false, unintended rotations of rotary inputs of electronic devices are disclosed herein. In one example, an electronic device is provided with an optical detector that measures the distance between the electronic device and the wearer's forearm or hand, and when the distance is smaller than a threshold distance, the turns of the rotary input are false, unintended turns. In another example, a crown of a rotary input includes a plurality of capacitive sensors that detects the presence of a wearer's finger, which when absent, the turns of the rotary input are false turns. In another example, deflections or positions of a shaft of the rotary input are measured and if the deflections / positions indicate an upward force on the rotary input (which are likely caused by the wearer's forearm or hand), the turns of the rotary input are false turns. Other embodiments are described herein.

The invention provides a high-precision optical pose measurement method based on tower recovery, which adopts a close-range bidirectional optical cooperation mode, measures a mark point of a recovery tower through an optical detector on a rocket, and determines the distance and the pose of the rocket relative to the recovery tower; and the optical measurement system of the recovery tower synchronously detects and identifies the rocket and controls a capture arm and a buffer mechanism of the recovery tower to move, and optical measurement data of the recovery tower are fed back to the rocket and are integrated with optical measurement data on the rocket to control landing of the rocket. According to the invention, optical measurement and navigation are introduced into rocket tower type recovery, and the method has the advantages of high measurement precision, high data frequency, interference resistance and the like. The relative relation between the rocket and the recovery tower can be directly obtained through optical pose measurement, compared with inertial navigation, the coordinate conversion process can be reduced, and the advantage of no accumulated error is achieved. Compared with satellite navigation, optical pose measurement does not depend on external signals, and higher independence and electromagnetic resistance are achieved.

The invention discloses an optical detector, an optical receiving system, an optical detection method and a chip, and belongs to the field of optical communication. The optical detector comprises a micro-ring detector and N micro-ring resonant cavities which are sequentially arranged and coupled, the first micro-ring resonant cavity is coupled with the waveguide, the micro-ring detector is coupled with the Nth micro-ring resonant cavity, and a first coupling coefficient between the waveguide and the first micro-ring resonant cavity is not smaller than a second coupling coefficient between the micro-ring detector and the Nth micro-ring resonant cavity; and the micro-ring detector is used for generating a first light current based on the target light signal, the first light current is used for detecting the intensity of the target light signal, and the target light signal is obtained by filtering the initial light signal transmitted in the waveguide through the micro-ring detector and the N micro-ring resonant cavities. The optical detector provided by the invention is higher in isolation degree.

The invention relates to the technical field of optical wireless communication, in particular to an optical wireless communication device and method based on beam shaping, and the device comprises a beam shaping module which comprises at least one beam shaping lens so as to convert a beam outputted by a point light source into a uniformly distributed linear or planar light field; the optical transceiver module comprises a plurality of optical base stations, the optical base stations are arranged in a redundant mode in the extension direction of the communication scene, each optical base station integrates at least one optical transmitter, an optical detector and a plurality of prisms and is used for transmitting and receiving optical signals, and the coverage range of the single optical base station is expanded through the prisms; and the dynamic demodulation module is connected with the optical detector, and dynamically adjusts the demodulation threshold value of the corresponding bit error rate according to the real-time channel state. Therefore, when the technology is applied to wireless optical communication, the communication performance can be improved, the coverage distance can be increased, the coverage uniformity can be improved, the bit error rate can be reduced, the construction cost can be reduced, and the long-term stable communication requirement of a closed scene can be met.

The invention relates to the technical field of garment fabric detection equipment, in particular to a fabric elasticity detection device for garment manufacturing, which comprises a base, a detection frame body is fixedly connected to the upper end surface of the base, an optical detector is fixedly mounted on the inner top surface of the detection frame body, and two hollow extension rollers are slidably connected to the side wall of the detection frame body. The two hollow extension rollers are used for fixing, extending and stretching cloth. According to the invention, the hollow extension roller can be used for carrying out winding type adsorption fixation on the garment fabric, the consistency of the overall stretching degree of the garment fabric can be effectively maintained, gradient continuous segmented pressure detection can be carried out on the garment fabric, the pressure detection operation of the garment fabric is simplified, the elasticity detection efficiency of the garment fabric is improved, and the detection precision is improved. Meanwhile, intermittent stretching and extension of the garment fabric can be achieved, corresponding segmented pressure detection can be conducted on the fabric under different extension conditions, and the elastic performance of the garment fabric can be reflected more accurately.

The present disclosure relates to an optical transfer device for tissue treatment. An optical transfer device of the present disclosure includes an optical probe having a light divergence part at the longitudinal end thereof, and a coating part configured to surround the optical probe, wherein the coating part includes a light diffusion part formed at the end thereof configured to cover the light divergence part, the light diffusion part having multiple grooves formed thereon.

An apparatus for digitizing an optical signal comprises: an optical detector to detect an optical signal and to generate an electric signal corresponding to the optical signal; an envelope curve detector to determine the amplitude of the electric signal or a modified electric signal resulting from the electric signal, and to supply an amplitude signal corresponding to the amplitude; an analog to digital converter to digitize the amplitude signal and to supply a corresponding digitized amplitude signal; and a variable voltage source to calibrate the envelope curve detector.

An aspect of the disclosure provides an interferometric near infrared spectroscopy, iNIRS, system comprising: a light emitting arrangement comprising: a first light source configured to provide wavelength-swept emission of light through a plurality of different wavelengths in a first wavelength range; a second light source configured to provide wavelength-swept emission of light through a plurality of different wavelengths in a second wavelength range different to the first wavelength range; a common sample delivery channel coupled to each of the first and second light sources to receive light therefrom and to deliver said light towards a subject; and one or more reference channels for receiving reference light from the first light source and / or the second light source; a light detecting arrangement comprising an interferometrie optical detector; wherein the optical detector is coupled to the one or more reference channels for receiving reference light from the first and second light sources; wherein the light detecting arrangement is arranged to be coupled to the subject for the optical detector to receive sample light from the first and second light sources, the sample light comprising light which travelled along the common sample delivery channel; wherein the optical detector is arranged to combine the sample light with the reference light to provide combined light signals comprising one or more components at a beat frequency between sample light and reference light; and wherein the iNIRS system is configured to process the combined light signals for providing imaging and analysis of the subject.

A wearable device with a light source and an optical sensor. In some embodiments, a system includes a wearable device for being worn by a subject and for measuring a first biomarker of a blood vessel of the subject. The wearable device may include a first light source, and a plurality of optical detectors. The system may be configured: to perform a photoplethysmography measurement with each of the plurality of optical detectors, the first biomarker being a blood volume; or to perform a speckleplethysmography measurement with each of the plurality of optical detectors, the first biomarker being a blood flow velocity.

Embodiments herein relate to an optical chemical sensor system that is wearable and includes a microneedle array. In one embodiment, the invention includes a chemical sensing device having a set of microneedles and sensor elements. The sensor element may include a first low refractive index gel layer, a second low refractive index gel layer, and a chromogenic ionophore sensing film disposed between the first low refractive index gel layer and the second low refractive index gel layer. In one embodiment, a retardation layer may be disposed between the sensor element and a set of microneedles. An optical emitter may be configured to emit light into the sensor element. An optical detector may be configured to receive light from the sensor element. Other embodiments are also included herein.

The present disclosure provides a semiconductor structure and a system for manufacturing the semiconductor structure. The system includes a fabrication equipment, configured to perform operations to form a layer on a wafer; an exposure equipment, configured to perform patterning operations to form a pattern of the layer; and an alignment equipment, configured to detect an alignment of two overlay marks at different elevations on the wafer. The alignment equipment includes a stage, configured to support the wafer; an optical device, configured to emit a radiation to excite a photoluminescent material of one of the two overlay marks; an optical filter, configured to receive and filter a radiation emitted from the photoluminescent material; and an optical detector, configured to convert an optical signal filtered by the optical filter to an electrical signal.

In a general aspect, a quantum spectrum sensing system is presented. In some implementations, a system includes a laser system, a vapor cell sensor, an optical detector, and a signal processing system. The laser system includes a first laser that generates a first laser signal; a comb generator that produces a frequency comb signal based on the first laser signal; and a second laser generates a second laser signal. The vapor cell sensor includes a vapor and receives input optical signals based on the frequency comb signal and the second laser signal. The vapor cell sensor produces output optical signals based on interactions of the vapor with the input optical signals and electromagnetic radiation. The signal processing system processes the output optical signals to identifying signals in the electromagnetic radiation that are off resonance with a transition frequency between Rydberg states of the vapor.

The embodiment of the invention provides an optical detection circuit, a wireless communication base station, a system and a signal processing method, relates to the technical field of wireless communication, and is used for improving the rollback efficiency of the optical detection circuit. The optical detection circuit comprises a main circuit and an auxiliary circuit, the main circuit is conducted, the auxiliary circuit is conducted under the control of the power amplifier when the power is larger than a set value, the turn-on voltage effect similar to that of a triode can be achieved, and the output power of the optical detection circuit is improved. An impedance modulation network is adopted to carry out output load modulation on the optical detector in the main path and the optical detector in the auxiliary path, so that dynamic load conversion from a backoff point to a maximum output point is realized, and the main path optical detector and the auxiliary path optical detector can maintain relatively high output efficiency in an interval between the maximum power point and the backoff point; therefore, the purpose of improving the backspacing efficiency of the optical detection circuit is achieved.

The present application provides a chip appearance detection device, a chip, and a chip appearance detection method. The detection device includes: a chip clamping component and a first optical detector. The first optical detector is arranged on one side of the chip clamping component and is used to perform appearance detection on the chip on the chip clamping component at a first position; the chip clamping component includes: a rotating disk, positioning teeth and a fixed frame; the rotating disk is used to transfer the chip to a second position corresponding to the first position so that the first optical detector can perform appearance detection on the chip. The rotating disk is evenly provided with positioning teeth along the circumference, and the sides of the positioning teeth facing the fixed frame are provided with a shading portion, which is used to block the light transmitted through the chip; a fixed frame connected to the circumference of the rotating disk and a rotating space for the fixed frame to rotate to the shading portion are provided between adjacent positioning teeth, and the fixed frame is used to fix the chip. The shading portion is used to block the light transmitted through the chip circuit board, effectively image the chip appearance, and avoid light interference.

The invention discloses a wafer defect identification method and system under multi-feature fusion, and relates to the related field of semiconductor manufacturing, and the method comprises the steps: activating an optical detector to obtain an initial surface image of a target wafer, and carrying out the processing of the initial surface image according to a preprocessing strategy, and obtaining a target surface image; extracting a first image corresponding to the first structure from the target surface image, and constructing a first target image according to a plurality of crystal grain images in the first image; and comparing the first target graph with the first standard graph to obtain a first defect graph, and obtaining a defect identification result of the target wafer based on the first defect graph. The technical problem that existing wafer defect recognition is insufficient in recognition accuracy and robustness is solved, and the technical effect of improving the accuracy and robustness of defect recognition is achieved.

Various embodiments for detecting and rejecting false, unintended rotations of rotary inputs of electronic devices are disclosed herein. In one example, an electronic device is provided with an optical detector that measures the distance between the electronic device and the wearer's forearm or hand, and when the distance is smaller than a threshold distance, the turns of the rotary input are false, unintended turns. In another example, a crown of a rotary input includes a plurality of capacitive sensors that detects the presence of a wearer's finger, which when absent, the turns of the rotary input are false turns. In another example, deflections or positions of a shaft of the rotary input are measured and if the deflections / positions indicate an upward force on the rotary input (which are likely caused by the wearer's forearm or hand), the turns of the rotary input are false turns. Other embodiments are described herein.

Systems and methods for optically sensing medicament concentrations within medicament delivery devices are disclosed. A medicament delivery device can include a fluid path comprising a reservoir in fluid communication with an outlet port, in which the device is actuatable to drive fluid through the fluid path, from the reservoir and out of the outlet port. A sensor assembly of the delivery device is configured to determine concentration of an analyte in the fluid. The sensor assembly includes an optical emitter configured to emit photons towards a fluid sample within the fluid path, an optical detector configured to receive photons passed through and / or reflected from the fluid sample and provide a detector signal, and one or more signal processing components configured to receive the detector signal and, based at least in part on the detector signal, provide an indication of the analyte concentration in the fluid sample.

An optical detector system providing output signals. The system includes a ring-type photodetector, having an open center and multiple ring detector segments each separated by a gap, and an integral lens for receiving incident light and generating a beam spot on the photodetector. The lens includes an axicon and an asphere with a surface defined by both odd and even polynomial terms. The light does not fall outside or inside of the ring detector segments when the incident light is moved laterally off an optical center line but an intensity of the light is shifted around the ring detector segments. The detector system also may include a computer system configured to determine, based on the output signals, first data indicative of a direction of the beam spot relative to a predetermined point on the photodetector and second data indicative of a distance between the beam spot and the predetermined point.

An optical inspection system of removing a pattern relevant to surface metallic texture on circuits from an image to be inspected includes a first light source module, an image forming module and an operation processor. The first light source module includes a first polarizer and a linear light source. The first polarizer has a first polarization axis. The linear light source emits a linear light beam which passes through the first polarizer to project polarization beam onto the circuits. The image forming module includes a second polarizer and an optical detector. The optical detector receives a reflection beam generated by the linear polarization beam being reflected from the circuits and passing through the second polarizer. The operation processor receives the image to be inspected generated by the reflection beam, and analyzes the image to be inspected for determining whether the circuits have any defect except the surface metallic texture.

The optical detector protection device comprises a supporting assembly, a control assembly, a protection assembly and a movement assembly, parts in the supporting assembly are connected and fixed through threads, and the protection assembly is fixed to the positions corresponding to the parts in the supporting assembly through screws and bolts. The control assembly and the movement assembly are fixed to the supporting assembly. According to the utility model, the control assembly controls the motion assembly to drive the shielding plate in the protection assembly to move, so that the shielding plate in the protection assembly can be rapidly and stably opened when the detector is used, the experiment progress is accelerated, the complex process is reduced, and the detection surface of the detector is protected from being influenced and damaged by external factors when the detector is not used. Meanwhile, the detector protection device has the advantages of quick and efficient response, simple operation, convenient installation mode and small occupied experiment space.

The invention provides a detection device for a density gradient centrifugal sample, and belongs to the technical field of detection devices. The device comprises a sample suction platform mechanism which is used for sucking layered samples to be detected in a centrifugal tube layer by layer and conveying the layered samples to a sample detection chamber of an optical detector mechanism; the optical detector mechanism is provided with a xenon lamp light source and a beam shrinking light path system and supports 200-1100 nm full-wavelength detection; and the automatic collecting platform mechanism is used for sub-packaging the samples detected by the optical detector mechanism. According to the invention, a separation system and a collection system are integrated into a continuous process, so that man-made interference is reduced, and the resolution ratio and efficiency are improved. The xenon lamp light source and the beam shrinking light path system are adopted, the detection precision and stability are improved based on the spectrophotometer principle, the detection wavelength can be freely selected, and the limitation of traditional dual wavelengths is broken through.

To provide a scanning noise microscope capable of measuring at both low temperatures and a room temperature.SOLUTION: There is provided a scanning noise microscope comprising a sample stage whose sample position is adjustable, a probe support unit for supporting a probe and capable of adjusting the position of the probe and bringing the tip of the probe close to the surface of the sample, an objective lens, and an optical detector capable of detecting a terahertz wave focused by the objective lens, the scanning noise microscope measuring a passive near-field signal obtained by scattering the near-field light of the sample itself at the tip of the probe. The optical detector is disposed in a first chamber, and the sample stage, the probe support unit, and the objective lens are disposed in a second chamber, with the first and second chambers constituted to be capable of controlling the temperature independently.SELECTED DRAWING: Figure 1

In a general aspect, a quantum spectrum sensing system is presented. In some implementations, a system includes a laser system, a vapor cell sensor, an optical detector, and a signal processing system. The laser system includes a first laser that generates a first laser signal; a comb generator that produces a frequency comb signal based on the first laser signal; and a second laser generates a second laser signal. The vapor cell sensor includes a vapor and receives input optical signals based on the frequency comb signal and the second laser signal. The vapor cell sensor produces output optical signals based on interactions of the vapor with the input optical signals and electromagnetic radiation. The signal processing system processes the output optical signals to identifying signals in the electromagnetic radiation that are off resonance with a transition frequency between Rydberg states of the vapor.

A system for monitoring a petrochemical installation is disclosed. The system can include an optical imaging system comprising an array of optical detectors. The system can comprise processing electronics configured to process image data detected by the optical imaging system. The processing electronics can be configured to detect a target species based at least in part on the processed image data. The processing electronics can further be configured to, based on a detected amount of the target species, transmit an alarm notification to an external computing device over a communications network indicating that the target species has been detected at the petrochemical installation.