1413 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 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 generates an electrical signal having a predetermined duration at an output when the signal characteristic is present. A clock generates a clock with a period, wherein the predetermined duration is greater than the period. A second electrical circuit generates and stores a state or a time in a memory location, where the state has a first state value when the electrical signal having the predetermined duration is present during a clock cycle and has a second state value when the electrical signal having the predetermined duration is not present during the clock cycle. A processor determines received entangled state information from the state value stored in the memory location or from time stored in the memory location.

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.

A time-based wireless pairing operation between a medical device, such as a patient bed, and a wall module in a patient room is initiated in response to a power plug of the medical device being plugged into a power receptacle carried by the wall module. Times determined by timers of the medical device and the wall module are compared by the wall module or by the medical device so that wireless pairing occurs only with the medical device that was plugged into the wall module. Different types of plug detectors used in the wall module to detect connection of the power plug include optical detectors, mechanical switches, and current sensors.

The invention discloses an amorphous tungsten superconducting nanowire single-photon detector, which comprises a photosensitive component, and is characterized in that the photosensitive component is an amorphous tungsten superconducting nanowire; the amorphous tungsten superconducting nanowire is prepared by the following steps: (1) growing an amorphous tungsten film on a substrate; and (2) etching the amorphous tungsten film into a roundabout nanowire structure by using electron beam exposure and reactive ion etching methods to obtain the amorphous tungsten superconducting nanowire. According to the invention, the tungsten nanowire with good stability is used as the main body material of the SNSPD, so that the robustness of the SNSPD preparation process is improved, and the service life of the SNSPD device in practical application is prolonged.

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.

Embodiments herein relate to optical chemical sensor systems that can be wearable and include microneedle arrays. In an embodiment, a chemical sensing device is included having a set of microneedles and a sensor element. The sensor element can include a first low-index gel layer, a second low-index gel layer, and a chromoionophore sensing film disposed between the first low-index gel layer and the second low-index gel layer. In an embodiment, a delay layer can be disposed between the sensor element and the set of microneedles. An optical emitter can be configured to emit light into the sensor element. An optical detector can be configured to receive light from the sensor element. Other embodiments are also included herein.

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.

Disclosed are a nanopore-optical electronic device and a method for sequencing a biomolecule and modifications thereof. The nanopore-optical electronic device includes: a cis-fluidic chamber and a trans-fluidic chamber fabricated in a planar substrate; a nano-fluidic channel in between and connecting the cis-fluidic chamber and the trans-fluidic chamber; a first electrode and a second electrode sealed in the nano-fluidic channel and forming a nanogap / nanopore therebetween; a third electrode and fourth electrode disposed in the cis-fluidic chamber and the trans-fluidic chamber, respectively; an optical coupling element coupling an electromagnetic beam with the nanogap; an optical detector detecting an optical signal from the nanogap when a biomolecule translocates through the nanopore; and a current-measuring circuit concurrently measuring a tunneling current and ionic current when the biomolecule translocates through the nanopore. The recorded optical signal and tunneling current and ionic current signals are coincidental in time and colocalized in space.

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.

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.

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.

A method includes receiving an indication of an emission plume traveling along a first direction. The method also includes determining a cross-section of the emission plume, wherein the cross-section is substantially perpendicular to the first direction. Further, the method includes determining a travel path for an optical detector to obtain optical measurements along the cross-section, wherein the travel path extends in a second direction along the cross-section, and the optical detector is configured to obtain the optical measurements in a third direction crosswise to the travel path.

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.