Abstract: Radio frequency motion sensors may be configured for operation in a common vicinity so as to reduce interference. In some versions, interference may be reduced by timing and/or frequency synchronization. In some versions, a master radio frequency motion sensor may transmit a first radio frequency (RF) signal. A slave radio frequency motion sensor may determine a second radio frequency signal which minimizes interference with the first RF frequency. In some versions, interference may be reduced with additional transmission adjustments such as pulse width reduction or frequency and/or timing dithering differences. In some versions, apparatus may be configured with multiple sensors in a configuration to emit the radio frequency signals in different directions to mitigate interference between emitted pulses from the radio frequency motion sensors.

Abstract: A method of manufacturing a spacer (285) for spacing apart and electrically coupling first and second components of an optical device is disclosed. The method comprises a step of adhesively coupling a first substrate (250) to each of a plurality of spacer elements (205). The method comprises a step of adhesively coupling a second substrate (275) to each of the plurality of spacer elements, such that the plurality of spacer elements are disposed between opposing surfaces of the first and second substrates. At least one of the plurality of spacer elements comprises a conductive coating and/or is adhesively coupled to the first and second substrates with an electrically-conductive adhesive, such that an electrically-conductive path (290a-d) is formed for electrically coupling the first and second components of the optical device. Also disclosed is an optical device (500) comprising a spacer (285) manufactured according to the method.

Abstract: Optical Device and Manufacturing Method An optical device (380) is disclosed, the device comprising a substrate (330), first electrically-conductive element (325) formed as a pattern on the substrate, a layer of material extending over at least a portion of the first electrically-conductive element and forming an optical element (370), and a second electrically-conductive element (355) extending through the layer of material and coupled to the first electrically-conductive element. Also disclosed is an associated method of manufacturing the optical device (380), and an apparatus (600) comprising at least one of the disclosed optical devices, a camera (605), and processing circuitry (615) communicably coupled to the at least one optical device and to the camera.

Abstract: An example system includes a first spectrometer, a second spectrometer, and an electronic control device communicatively coupled to the first spectrometer and the second spectrometer. The first spectrometer is operable to emit first light using a first light source towards a sample region between the first spectrometer and the second spectrometer. The first spectrometer is also operable to measure first reflected light reflected using a first photodetector from an object in the sample region. The second spectrometer is operable to measure first transmitted light transmitted through the object using a second photodetector. The electronic control device is operable to determine, based on at least one of the measured first reflected light or the measured first transmitted light, a spectral distribution of light corresponding to the object.

Abstract: Methods of sensor readout and calibration and circuits for performing the methods are disclosed. In some embodiments, the methods include driving an active sensor at a voltage. In some embodiments, the methods include use of a calibration sensor, and the circuits include the calibration sensor. In some embodiments, the methods include use of a calibration current source and circuits include the calibration current source. In some embodiments, a sensor circuit includes a Sigma-Delta ADC. In some embodiments, a column of sensors is readout using first and second readout circuits during a same row time.

Abstract: An inductive position sensor device includes at least a first terminal to couple the position sensor device with a first receiving antenna coil for providing a first reception signal, and at least a second terminal to couple the position sensor device with a second receiving antenna coil for providing a second reception signal. The device further includes a unique receiver channel to evaluate the first and second reception signal, and a multiplexer. The multiplexer is configured to selectively couple the at least one first terminal or the at least one second terminal with the unique receiver channel in dependence on operating the multiplexer in a first or second operation state.

Abstract: A pixel includes a transfer gate, and a sample structure having a first sample stage and a second sample stage. The transfer gate and the first and the second sample stages are configured to be operated in conjunction with a light source in response to a control signal. The first sample stage is configured to sample a first sample value that depends on radiation incident on the photosensitive element from an object or a scene that is illuminated by the light source emitting light at a first output power, while the second sample stage is configured to sample a second sample value that depends on radiation incident on the photosensitive element from the object or the scene that is illuminated by the light source emitting light at a second output power. The first output power is different, in particular significantly different, from the second output power.

Abstract: The present disclosure discloses a dimming method for a dimming glass, including: in response to a dimming level selected from a user, obtaining a light transmittance value corresponding to the selected dimming level according to a corresponding relationship between dimming levels and actual light transmittance of the dimming glass; obtaining a dimming voltage value corresponding to the light transmittance value according to a corresponding relationship between the actual light transmittance and dimming voltages of the dimming glass; and adjusting a voltage applied to the dimming glass to the obtained dimming voltage value, wherein the corresponding relationship between the dimming levels and the actual light transmittance of the dimming glass is dividing an adjustable range of the actual light transmittance of the dimming glass to obtain the actual light transmittance corresponding to different dimming levels. The present disclosure improves dimming effect of dimming glass.

Abstract: Disclosed are an array substrate and a preparation method thereof, and a digital microfluidic chip. The preparation method includes: forming a plurality of photoelectric detection devices on a silicon-based substrate; transferring the photoelectric detection devices to a base substrate by adopting a micro transfer printing process; and forming a plurality of transparent driving electrodes on the base substrate, wherein the transparent driving electrodes are insulated from the photoelectric detection devices.

Abstract: A spectroscopic laser sensor based on hybrid III-V/IV system-on-a-chip technology. The laser sensor is configured to either (i) be used with a fiber-optic probe connected to an intravenous/intra-arterial optical catheter for direct invasive blood analyte concentration level measurement or (ii) be used to measure blood analyte concentration level non-invasively through an optical interface attached, e.g., to the skin or fingernail bed of a human. The sensor includes a III-V gain-chip, e.g., an AlGaInAsSb/GaSb based gain-chip, and a photonic integrated circuit, with laser wavelength filtering, laser wavelength tuning, laser wavelength monitoring, laser signal monitoring and signal output sections realized on a chip by combining IV-based semiconductor substrates and flip-chip AlGa1-nAsSb/GaSb based photodetectors and embedded electronics for signal processing.

Abstract: An optical encoder system is disclosed comprising a movable target arranged to provide a varying reflectance dependent on a position of the target within the system. An emitter is positioned on a first side of the target to illuminate the target and a sensor is positioned on the first side of the target to sense a reflectance from the target, wherein the sensed reflectance is dependent on the position of the target within the system. Also disclosed are a target and a sensor module for use in such a system, a device comprising such a system and a method of determining the position of a moving target using such a system.

Abstract: Optoelectronic modules operable to measure proximity independent of object surface reflectivity and, in some implementations, operable to measure characteristics (such as surface reflectivity or absorptivity) of stationary or moving objects are disclosed. The optoelectronic modules are operable to determine, for example, pulse rate, peripheral blood circulation, and/or blood oxygen levels of moving objects, such as the appendage of a user, in some instances. The optoelectronic modules can be used to measure peripheral blood circulation, for example, when a user of the optoelectronic module is engaged in physical activity, such as walking, running or cycling.

Abstract: A pixel arrangement comprises a photodiode, a circuit node, a transfer transistor coupled to the photodiode and to the circuit node, an amplifier with an input coupled to the circuit node, a first and a second capacitor, a first transistor coupled to an output of the amplifier and to the first capacitor, a second transistor coupled to the first transistor and to the second capacitor, and a coupling transistor coupled to the circuit node and to the second capacitor.

Abstract: In order to suppress the amount of time needed for the start-up of a microwave tube carried out when voltage fed from a power source has decreased, while avoiding increase in scale of a power storage unit, this power supply device includes: a power supply unit that supplies power fed from the power source to the microwave tube that is provided with a cathode, a heater for heating the cathode, an anode, and a collector; a power storage unit that stores the fed power and, if the voltage of the fed power decreases, supplies stored power that is power obtained by the power storing, to the microwave tube; and a power supply switching unit that, if the voltage of the fed power decreases, stops supplying the stored power to the anode and does not stop supplying the stored power to the heater.

Abstract: This disclosure describes illumination assemblies operable to generate a patterned illumination that maintain high contrast over a wide temperature range. An implementation of the illumination assembly can include an array of monochromatic light sources positioned on an illumination plane, first and second optical elements, and an exit aperture. A chief ray of each light source within the array of monochromatic light sources can substantially converge at an exit aperture. In such implementations light generated by the array of monochromatic light sources can be used efficiently.

Abstract: A method of manufacturing MEMS housings includes: providing glass spacers; providing a window plate; attaching the window plate to the glass spacers; aligning the glass spacers with a device glass plate having MEMS devices thereon; bonding the glass spacers to the device glass plate; and singulating the glass spacers, window plate, and device glass plate to produce the MEMS housings.

Abstract: The present disclosure provides an antenna, an antenna device, a fabricating method of the antenna, and a fabricating method of the antenna device, and relates to the field of antenna technology. The antenna includes a first substrate; a base material layer on the first substrate and having a plurality of antenna cavities arranged in an array therein; and a conductive layer on an inner side of each of the plurality of antenna cavities, each of the plurality of antenna cavities and the conductive layer on the inner side thereof forming an antenna unit, wherein each of the plurality of antenna cavities includes a first opening, and an aperture of the first opening at a position of the antenna cavity close to the first substrate is smaller than an aperture of the first opening at a position of the antenna cavity away from the first substrate.

Abstract: A LiDAR sensor for light detection and ranging includes a light source, a driver circuit, a detector and a processing unit. The light source includes an array of light emitters, wherein the light emitters are electrically interconnected as groups, and wherein the light emitters are operable to emit light away from the LiDAR sensor. At least two of the groups of light emitters form areas of the light source resembling different geometries from each other. The driver circuit is operable to address the groups of light emitters individually, such that the light emitters from a same group emit light with a same emission characteristic. The detector includes an array of photodetectors, wherein each photodetector is operable to detect light emitted by the light source and being reflected by an object outside the LiDAR sensor and to generate a detector signal as a function of the detected light.

Abstract: Methods and apparatus provide monitoring of coughing and/or a sleep disordered breathing state of a person. One or more sensors may be configured for non-contact active and/or passive sensing. The processor(s) may extract respiratory effort signal(s) from one or more motion signals generated by active non-contact sensing with the sensor(s). The processor(s) may extract one or more energy band signals from an acoustic audio signal generated by passive non-contact sensing with the sensor(s). The processor(s) may assess the energy band signal(s) and/or the respiratory efforts signal(s) to generate intensity signal(s) representing sleep disorder breathing modulation. The processor(s) may classify feature(s) derived from the one or more intensity signals to generate measure(s) of coughing and/or sleep disordered breathing.

Abstract: The present disclosure relates to systems and methods for elastic delivery, processing, and storage for wearable devices based on system resources. For example, a wearable apparatus may have at least one battery; at least one sensor configured to measure at least one property associated with a user of the wearable apparatus; at least one memory storing measurements from the at least one sensor and instructions; at least one transmitter configured to send data to a device remote from the wearable apparatus; and at least one processor configured to execute the instructions to: receive, from the at least one battery, an indicator of a charge; and based on the received indicator, sending a command to the at least one sensor to operate in a low-power mode or a high-power mode, the low-power mode having. a lower sampling rate than the high-power mode.