Abstract: An inspection system for inspecting optical assemblies of a LiDAR which includes a transmitting optical assembly at a transmitting end and a receiving optical assembly at a receiving end. The inspection system includes: a detection laser and a detection probe. The detection laser is configured to emit a detection laser beam that passes through the transmitting optical assembly and/or the receiving optical assembly, and exits the LiDAR or is incident to the detection probe. The detection probe is configured to receive the detection laser beam or an echo of the detection laser beam after being reflected off an object, and convert it into an electrical detection signal. The inspection system further includes a signal processing unit that communicates with the detection probe to receive the electrical detection signal, and is configured to determine an operation state of the optical assemblies based on the electrical detection signal.

Abstract: A solid-state laser radar, including: a plurality of emission modules, each emission module including at least one light-emitting unit, and the light-emitting unit including a plurality of lasers configured to emit detection beams at the same time; and a receiving module, including at least one detection unit, the detection unit including a plurality of photodetectors configured to receive echoes, reflected by a target object, of the detection beams, the plurality of emission modules are disposed around the receiving module, the light-emitting units of the plurality of emission modules are located on a same plane, and one detection unit is configured to receive echoes, reflected by the target object, of the detection beams emitted by the light-emitting units of the plurality of emission modules. For a set range of field angles, the lengths of the light-emitting units emitting light simultaneously are greatly reduced by providing the plurality of emission modules.

Abstract: This disclosure provides a light detection device and a driving vehicle. The light detection device includes: a window; a light transmission end configured to output an transmission signal; a light detecting end configured to detect the echo signal of the transmission signal; and optical signal redirection component configured to deflect the transmission signal through movement, so that the transmission signal emerges from the window of the light detection device to enable scanning of the field of view in the second direction and redirect the echo signal, whereby the echo signal is transmitted to the light detecting end. The optical path for transmission signal and the optical path for echo signal overlap at least between the window and the optical signal redirection component.

Abstract: A laser gas detection system includes a laser gas detector and a near-eye display device. The laser gas detection system provided in the present disclosure incorporates modern display technologies and modern communication facilities to present detection results to a user of the laser gas detection system in various intuitive and highly readable forms. The laser gas detection system is further capable of projecting the detection results to a field of view of the user through the near-eye display device.

Abstract: Methods and apparatuses for measuring reflectivity of a target object by using laser radar (LIDAR) are provided. In an implementation, a method comprising: a detector of the LIDAR receives an echo of a detection beam reflected by a target object, and converts the echo into an electrical signal to obtain an echo photocurrent integral. The reflectivity of the target object is determined based on a predetermined reflectivity calibration curve and a photocurrent integral of the echo.

Abstract: A Lidar system may comprise a rotor and a stator. The rotor is configured to rotate with respect to the stator. The rotor comprises at least one supporting body and a plurality of light sources disposed on the at least one supporting body, the plurality of light sources configured to emit a plurality of first light beams. The plurality of light beams are non-uniformly distributed along a vertical direction in a vertical field of view of the Lidar system.

Abstract: A device and method for measuring an angle of a scanner, and a LiDAR. The device for measuring the angle includes a conductor (11) and an angle measuring circuit (12), wherein the scanner comprises a scanning mirror (10); one side of the scanning mirror (10) includes a reflective surface and the other side thereof includes a mounting surface, and the scanning mirror can pivot around at least one axis; the conductor (11) can be fixed on the mounting surface; the angle measuring circuit (12) includes a resonant system (120) and a sampling unit (121); the resonant system (120) includes an inductor (1201) and a capacitor (1202), the inductor (1201) can be fixedly arranged at a predetermined distance from a stationary position of the conductor (11); and the sampling unit (121) can sample and output an electric signal of the resonant system (120), and can determine a parameter of the resonant system (120) so as to determine a tilt angle of the scanning mirror (10).

Abstract: Methods, devices, and systems for light detection are provided. In one aspect, a light detection device includes a light emitter array, a light detector array, and a controller. The light emitter array includes a plurality of light emitters configured to output transmission signals. The light detector array includes a plurality of light detectors configured to detect echo signals of the transmission signals reflected off an obstacle. The light emitter array and the light detector array are configured to form a plurality of detection channels, and each detection channel includes at least one light emitter and at least one light detector. The controller is configured to, during a signal transmission process, select multiple light emitters to emit light in parallel. Fields of view (FOVs) of the multiple light emitters that emit light in parallel are separate from each other within a detection distance.

Abstract: Provided is a LiDAR (100), comprising: a first transmitting unit (101) and a second transmitting unit (102), which are configured to respectively emit a first detection laser beam (L1) and a second detection laser beam (L2) to detect a target object; an optical assembly at a transmitting end and an receiving end optical assembly at a receiving end, the optical assembly at the transmitting end comprising a transmitting lens (103), and the optical assembly at the receiving end comprising a receiving lens (107); and a first receiving unit (105) and a second receiving unit (106), configured to respectively receive a first echo (L1?) and a second echo (L2?) reflected by a object of the first detection laser beam (L1) and the second detection laser beam (L2), convert them into electrical signals, wherein the first detection laser beam (L1) and the second detection laser beam (L2) are respectively emitted from the first transmitting unit (101) and a second transmitting unit (102) and then pass through different opti

Abstract: A Lidar system and method is provided for adaptive control. The Lidar system comprises: an array of emitters each of which is individually addressable and controlled to emit a multi-pulse sequence, at least a subset of the emitters are activated to emit multi-pulse sequences concurrently according to an emission pattern; an array of photosensors each of which is individually addressable, at least a subset of the photosensors are enabled to receive light pulses according to a sensing pattern, each of the subset of photosensors is configured to detect returned light pulses returned and generate an output signal indicative of an amount of optical energy associated with at least a subset of the light pulses; and one or more processors electrically coupled to the array of emitters and the array of photosensors and configured to generate the emission pattern and the sensing pattern based on one or more real-time conditions.

Abstract: LiDARs and distance measuring methods are provided. In one aspect, a LiDAR includes: a laser emitting device, a control device, a detection device, and a data processing device. The control device is configured to generate a trigger signal based on a time sequence random number. The laser emitting device includes at least one laser and at least one driver coupled with the at least one laser, and a driver is configured to drive a laser coupled to the driver to emit a laser pulse signal according to the trigger signal. The detection device is configured to receive an echo signal of the laser pulse signal reflected by an object and convert the echo signal into an electrical signal. The data processing device is configured to determine distance information of the object based on an emission time of the laser pulse signal and a reception time of the echo signal.

Abstract: This disclosure relates to laser radar (LIDAR) technology. In an implementation, a receiver of a LIDAR comprises: a circuit board, a plurality of receiving units provided on the circuit board and configured to convert an optical signal into an electrical signal, a packaging sidewall protruding from the circuit board and disposed around the plurality of receiving units to form a cavity accommodating the plurality of receiving units, and a packaging layer provided on the packaging sidewall and covering the cavity.

Abstract: A Lidar system may comprise a rotor and a stator. The rotor is configured to rotate with respect to the stator. The rotor comprises at least one supporting body and a plurality of light sources disposed on the at least one supporting body, the plurality of light sources configured to emit a plurality of first light beams. The plurality of light beams are non-uniformly distributed along a vertical direction in a vertical field of view of the Lidar system.

Abstract: An apparatus for mounting a plurality of light sources of a Lidar is provided. The apparatus comprises: a plurality of mounting units held by a base structure and a fixation component that is disposed away from the base structure along a longitudinal direction of a mounting unit, the base structure and the fixation component configured to allow an adjustment of the plurality of mounting units along a horizontal direction. The plurality of the mounting units includes structures that accept the plurality of the light sources and control directions of light beams emitted by the plurality of light sources along a vertical direction.

Abstract: Provided in the present disclosure is a laser for use in a LiDAR, the laser comprising: a plurality of light-emitting units, each light-emitting unit comprising a plurality of light-emitting points, wherein the plurality of light-emitting units share a cathode or an anode; and each light-emitting unit is respectively provided with a wiring unit; and each wiring unit is electrically connected to an unshared anode or cathode of its corresponding light-emitting unit. The area of a laser provided with a plurality of light-emitting units does not increase, and echo light beams generated from detection light beams emitted by the plurality of light-emitting units are received by the same detector, thereby improving the vertical angular resolution and point cloud density of a LiDAR.

Abstract: A storage method for detection data of a lidar, a data processing method for a lidar, a lidar, and a computer-readable storage medium are provided. The storage method includes: S101: receiving a detection data, the detection data including time information and intensity information corresponding to the time information; and S102: storing the intensity information with a first time precision based on a weight of the time information. The first time precision is a time interval between any two adjacent first time scales, and is n times the time resolution of the detection data of the lidar, and n>1. The weight is associated with a time interval between the time information and at least one first time scale. The storage method can maintain a ranging precision while reducing a storage space.

Abstract: A laser gas detection system includes a laser gas detector and a near-eye display device. The laser gas detection system provided in the present disclosure incorporates modern display technologies and modern communication facilities to present detection results to a user of the laser gas detection system in various intuitive and highly readable forms. The laser gas detection system is further capable of projecting the detection results to a field of view of the user through the near-eye display device.

Abstract: A laser gas detection system includes a laser gas detector and a near-eye display device. The laser gas detection system provided in the present disclosure incorporates modern display technologies and modern communication facilities to present detection results to a user of the laser gas detection system in various intuitive and highly readable forms. The laser gas detection system is further capable of projecting the detection results to a field of view of the user through the near-eye display device.

Abstract: A laser device, a light source module and a laser radar. The laser device comprises: a light-emitting lamination, comprising a first reflector (105), an active region (104) and a second reflector (102), which are sequentially arranged in a light emergence direction, wherein the light-emitting lamination comprises one or more light-emitting units (200), and each of the light-emitting units (200) comprises a plurality of regularly arranged light-emitting points (203); and electrode units (107) located on the side of the first reflector (105) that is away from the active region (104), wherein each of the electrode units (107) corresponds to one light-emitting unit (200) and is used for loading a driving signal to the light-emitting unit (200). The laser device can improve the uniformity of luminous intensity.

Abstract: A method of performing detection using a frequency modulated continuous wave (FMCW) includes: transmitting a detection wave consistent with a frequency sweep waveform to detect a target object; receiving an echo of the detection wave reflected from the target object; and obtaining a distance to and/or a speed of the target object based on the echo and the detection wave, wherein one cycle of the frequency sweep waveform includes a rising edge, a horizontal region, and a falling edge.