Abstract: In some examples, an apparatus is provided. The apparatus comprises: an illuminator having an adjustable field of view (FOV), the FOV being adjusted based on setting a direction of propagation of light to illuminate the FOV; a light detector; and a controller configured to: control the illuminator to project the light along a first direction of propagation to illuminate a first FOV; control the illuminator to project the light along a second direction of propagation to illuminate a second FOV; detect, using the light detector, reflected light received from the first FOV and the second FOV to generate one or more detection outputs for a combined FOV including the first FOV and the second FOV; and perform at least one of a detection operation or a ranging operation of an object in the combined FOV based on the one or more detection outputs.

Abstract: Embodiments of the disclosure provide receivers for light detection and ranging (LiDAR). In an example, a receiver includes an acousto-optical (AO) beam deflecting unit configured to receive an input laser beam and a controller configured to cause an acoustic signal to be applied to the AO beam deflecting unit to deflect the input laser beam for a deflection angle and form an output laser beam towards a beam sensor. The deflection angle between the input and the output laser beams is nonzero.

Abstract: Embodiments of the disclosure provide receivers for light detection and ranging (LiDAR). In an example, a receiver includes a beam converging device and an EO beam deflecting unit. The beam converging device is configured to receive a laser beam from an object being scanned by the LiDAR and form an input laser beam. The EO beam deflecting unit is configured to generate a non-uniform medium having at least one of a refractive index gradient or a diffraction grating, receive the input laser beam such that the input laser beam impinges upon the non-uniform medium, and form an output laser beam towards a photosensor. An angle between the input and the output laser beams is nonzero.

Abstract: Embodiments of the disclosure provide control systems and methods for controlling a pulsed laser diode and a sensing device including a pulsed laser diode. An exemplary control system includes a distance detector configured to generate a distance signal indicating a distance between the pulsed laser diode and an object reflecting pulsed laser beams emitted by the pulsed laser diode. The control system may also include a controller configured to dynamically control power supplied to the pulse laser diode based on the distance signal.

Abstract: Embodiments of the disclosure provide receivers for light detection and ranging (LiDAR). In an example, a receiver includes a beam reflecting unit having a plurality of digital micromirror devices (DMDs). The beam reflecting unit is configured to receive an input light beam returned from an object being scanned by the LiDAR, reflect a signal in the input light beam by at least one first DMD selectively switched to an “ON” state at an operation angle to form an output signal towards a detector, reflect a noise signal in the input light beam away from the detector by at least one second DMD selectively switched to an “OFF” state at a non-operation angle. The receiver also includes the detector configured to receive the output signal.

Abstract: Embodiments of the disclosure provide receivers for light detection and ranging (LiDAR). In an example, a receiver includes a beam converging device, an AO beam deflecting unit, and a beam sensor. The beam converging device is configured to receive a laser beam from an object being scanned by the LiDAR and form an input laser beam. The AO beam deflecting unit is configured to generate a diffraction grating along a propagating direction of an acoustic wave, receive the input laser beam such that the input laser beam impinges upon the diffraction grating, and form an output laser beam towards the beam sensor. An angle between the input and the output laser beams is nonzero.

Abstract: Disclosed herein are techniques for improving structural stability and duration of light beam steering components in a LiDAR system. A galvo mirror assembly for light detection and ranging includes a top bracket including a first rotatable unit configured to rotate around an axis; a bottom bracket aligned with the top bracket and including a second rotatable unit configured to rotate around the axis; a mirror including a top end and a bottom end, where the top end of the mirror is coupled to the first rotatable unit of the top bracket and the bottom end of the mirror is coupled to the second rotatable unit of the bottom bracket, such that the mirror is rotatable around the axis; and an enhance plate extending between and non-rotatably coupled to the top bracket and the bottom bracket. The enhance plate is spaced apart from the mirror.

Abstract: Embodiments of the disclosure provide a receiver in an optical sensing system for receiving a light beam. The receiver includes a first polarizer configured to pass the light beam of a first polarization. The receiver further includes an electro-optical layer coated with patterned transparent electrodes. An electric field is applied to a selected area of the electro-optical layer through the patterned transparent electrodes, and the electro-optical layer changes a portion of the light beam from the first polarization to a second polarization. The receiver also includes a second polarizer configured to selectively pass the portion of the light beam of the second polarization. The receiver additionally includes a detector configured to receive the portion of the light beam output from the second polarizer.

Abstract: Embodiments of the disclosure provide transmitters for light detection and ranging (LiDAR). The transmitter includes a laser source, a light collimator, and a beam shifter. The laser source is configured to provide a native laser beam. The light collimator is configured to collimate the native laser beam to form an input laser beam transmitting along a lateral direction. The beam shifter is configured to shift the input laser beam along a vertical direction perpendicular to the lateral direction by a displacement to form an output laser beam. The output laser beam and the input laser beam are parallel to each other.

Abstract: Systems, apparatuses, and methods for determining locations of wireless nodes in a network architecture are disclosed herein. In one example, a system includes a first wireless node having a wireless device with one or more processing units and RF circuitry for transmitting and receiving communications in the wireless network architecture including a first RF signal having a first packet. A second wireless node having a wireless device with a transmitter and a receiver enables bi-directional communications with the first wireless node in the wireless network architecture including a second RF signal with a second packet. The one or more processing units of the first wireless node are configured to execute instructions to determine a round trip time estimate of the first and second packets, to determine channel state information (CSI) of the first and second wireless nodes, and to calibrate hardware to determine hardware delays of the first and second wireless nodes.

Abstract: A method for operating a LiDAR system in an automobile that can include receiving noise data corresponding to an ambient noise level, receiving false positive data corresponding to a rate of false positive object detection occurrences; determining an object detection range spanning a distance defined by a minimum range of object detection and a maximum range of object detection for the LiDAR system; generating an object detection threshold value for detecting objects based on the noise data and the rate of false positive data; applying the object detection threshold value to each of a plurality of range values within the object detection range; and applying a gain sensitivity profile to the object detection threshold value at each of a plurality of range values.

Abstract: In one example, an apparatus is provided. The apparatus is part of a Light Detection and Ranging (LiDAR) module and comprises a transmitter circuit, a receiver circuit, and a controller. The receiver circuit comprises a photodetector configured to convert a light signal into a photocurrent signal. The controller is configured to: transmit, using the transmitter circuit, a first light signal; receive, using the photodetector of the receiver circuit, a second light signal; determine whether the second light signal includes a scatter signal coupled from the transmitter circuit, and a reflected first light signal; and based on whether the second light signal includes the scatter signal and the reflected first light signal, determine a time-of-flight of the first light signal based on one of: a width of the second light signal, or a time difference between the transmission of the first light signal and the reception of the second light signal.

Abstract: Provided are embodiments of replicative oncolytic adenovirus AD5 ApoA1 for inhibiting tumor growth and metastasis and use thereof in preparation of anti-tumor drugs. The virus can rapidly replicate in tumor cells and exert an oncolytic effect. Tumor cells infected with the virus can highly express apolipoprotein ApoA1 which can be secreted extracellularly in large quantities, significantly inhibit the invasion and metastasis of tumor cells, inhibit tumor-promoting inflammation pathways, and significantly reduce a IDO-1 which is a key molecule that leads to tumor immune escape. The virus can significantly inhibit tumor growth, inhibit tumor invasion, delay progression of cachexia and prolong the survival time of tumor-bearing mice in mice with liver cancer, breast cancer, colon cancer, or lung cancer.

Abstract: Embodiments of the disclosure provide a system for determining a laser emitting scheme of an optical sensing device. The system includes a controller communicatively coupled to a laser emitter of the optical sensing device. The controller is configured to perform operations that includes determining a safety distance range in a field of view of the optical sensing device based on a predetermined tolerance value, causing the laser emitter to emit a first laser pulse having a first power-associated value lower than the predetermined tolerance value in the safety distance range, and detecting whether an object is detected in the safety distance range based on the first laser pulse. In response to no object being detected in the safety distance range, the controller causes the laser emitter to emit a second laser pulse having a second power-associated value higher than the first power-associated value.

Abstract: Embodiments of the disclosure provide a light detection and ranging (LiDAR) system. In an example, the LiDAR system includes a laser source, a scanner, a beam deflecting unit, and a controller. The laser source is configured to emit a laser beam towards an object. The scanner is configured to receive a returned laser beam from the object, and deflect the returned laser beam towards a beam deflecting unit to form a first laser beam traveling along a first direction. The first direction deviates from a reference direction by a deviation angle. The beam deflecting unit is configured to receive the first laser beam, and deflect the first laser beam to form a second laser beam towards a photosensor. The controller is configured to dynamically control a deflection angle of the beam deflecting unit to cause the second laser beam to be deflected towards the photosensor to compensate the deviation angle.

Abstract: Systems, apparatuses, and methods for determining locations of wireless nodes in a network architecture are disclosed herein. In one example, a system for localization of nodes in a wireless network architecture, comprises a wireless node having a wireless device with one or more processing units and RF circuitry for transmitting and receiving communications in the wireless network architecture; and a plurality of wireless sensor nodes having a wireless device with a transmitter and a receiver to enable bi-directional communications with the wireless node in the wireless network architecture. One or more processing units of the wireless node are configured to execute instructions to determine ranging data including a set of possible ranges between the wireless node and the plurality of wireless sensor nodes having unknown locations, and to associate a set of relative locations within an environment of the wireless network architecture with the wireless node and the plurality of wireless sensor nodes.

Abstract: Embodiments of the disclosure provide an optical sensing system, a method for controlling the optical sensing system, and a controller for the optical sensing system. The exemplary method for controlling the optical system includes dividing a detection range of the optical sensing system into a plurality of sections, where each section covers a different range of distances to the optical sensing system. For each divided section, the transmitter of the optical sensing system transmits an optical signal to each section of the plurality of sections. The receiver of the optical sensing system then receives the optical signal returned from the corresponding section of the plurality of sections. After receiving the retuned optical signal from each divided section, these optical signals are then combined to form a detection signal of the detection range of the optical sensing system.

Abstract: An optical signal detection system includes a plurality of photodetectors configured to detect optical signals reflected from an environment surrounding the optical signal detection system and convert the optical signals into electrical signals. The optical signal detection system also includes an amplifier coupled to the plurality of photodetectors. The amplifier is shared by the plurality of photodetectors and configured to generate an output signal by amplifying an individual electrical signal converted by a corresponding photodetector. The optical signal detection system further includes a multiplexing circuit configured to selectively establish a connection between one of the plurality of photodetectors and the amplifier to amply the electrical signal converted by that photodetector.

Abstract: Embodiments of the disclosure provide an optical sensing system, a range estimation system for the optical sensing system, and a method for the optical sensing system. The exemplary optical sensing system includes a transmitter configured to emit a laser pulse towards an object. The optical sensing system further includes a range estimation system configured to estimate a range between the object and the optical sensing system. The range estimation system includes an analog to digital converter (ADC) configured to generate a plurality of pulse samples based on the laser pulse returned from the object. The returned laser pulse has a substantially triangular waveform including a rising edge and a falling edge. The range estimation system further includes a processor. The processor is configured to generate synthesized pulse samples on the substantially triangular waveform based on the pulse samples.

Abstract: Embodiments of the disclosure provide an apparatus for emitting laser light and a system and method for detecting laser light returned from an object. The system includes a transmitter and a receiver. The transmitter includes one or more laser sources, at least one of the laser sources configured to provide a respective native laser beam having a wavelength above 1,100 nm. The transmitter also includes a wavelength converter configured to receive the native laser beams provided by the laser sources and convert the native laser beams into a converted laser beam having a wavelength below 1,100 nm. The transmitter further includes a scanner configured to emit the converted laser beam to the object in a first direction. The receiver is configured to detect a returned laser beam having a wavelength below 1,100 nm and returned from the object in a second direction.