Abstract: The present disclosure provides a distance detection device. The distance detection device includes a light source configured to emit pulse light beams sequentially; and a scanning module including a first optical module, a second optical module, and drivers. The first optical module and the second optical module are sequentially positioned on an optical path of the light beams emitted by the light source, the drivers drive the first optical module and the second optical module to move to sequentially project the light beams emitted by the light source to different directions and form a strip-shaped scanning range after being emitted from the scanning module.

Abstract: This application discloses distance detection apparatuses. The distance detection apparatus includes a light source, a transmitting and receiving lens, a detector, and an optical path change element. The light source is to emit a beam. The transmitting and receiving lens is to collimate the beam emitted by the light source, and converge at least a part of return light of the beam reflected by a to-be-detected object. The detector is placed with the light source on a same side of the transmitting and receiving lens, to convert at least a part of return light that passes through the transmitting and receiving lens into an electrical signal. The optical path change element is to change an optical path of the beam emitted by the light source or the return light that passes through the transmitting and receiving lens.

Abstract: Systems and methods for performing optical distance measurement are provided. In one aspect, a system for measuring a distance to an object comprises a light emitter configured to emit an outbound light pulse, and a light sensor configured to receive a returning light pulse reflected from the object and output an analog pulse signal representing the returning light pulse. The system also comprises a field-programmable gate array (FPGA) coupled to the light sensor. The FPGA is configured to convert the analog pulse signal to a plurality of digital signal values, and generate a plurality of time measurements corresponding to the plurality of digital signal values. The system also comprises a controller configured to calculate the distance to the object based on the plurality of digital signal values and the plurality of time measurements.

Abstract: The present disclosure provides a laser diode package module. The laser diode package module includes a substrate including a first surface; a cover disposed on the first surface of the substrate; an accommodation space formed between the substrate and the cover; a laser diode die disposed in the accommodation space; and a reflective surface disposed in the accommodation space for outputting light of the laser diode die reflected by the reflective surface and transmitted through a light-transmitting area. The light-transmitting area is at least partially disposed on a surface of the cover opposite the substrate.

Abstract: A sensor system can comprise a detector with a plurality of units, wherein the detector is configured to generate a first set of electrical signals based on received photon energy of a light beam that is reflected back from a first plurality of points on one or more objects, in a first configuration. Additionally, the detector is configured to generate a second set of electrical signals based on received photon energy of a light beam that is reflected back from a second plurality of points on one or more objects in a second configuration, wherein the first configuration and the second configuration are with a predetermined correlation. Furthermore, the detector can determine distance to each of the first plurality of points and the second plurality of points on the one or more objects based on the first set of electrical signals and the second set of electrical signals.

Abstract: A sensor system can comprise a detector with a plurality of units, wherein the detector is configured to generate a first set of electrical signals based on received photon energy of a light beam that is reflected back from a first plurality of points on one or more objects, in a first configuration. Additionally, the detector is configured to generate a second set of electrical signals based on received photon energy of a light beam that is reflected back from a second plurality of points on one or more objects in a second configuration, wherein the first configuration and the second configuration are with a predetermined correlation. Furthermore, the detector can determine distance to each of the first plurality of points and the second plurality of points on the one or more objects based on the first set of electrical signals and the second set of electrical signals.

Abstract: A laser distance measuring device, a laser distance measuring method, and a movable platform are provided. The laser distance measuring device includes a transmitting module and a receiving module. The transmitting module includes a transmitting circuit and an optical transmitting system, the transmitting circuit is configured to transmit laser pulses, and the optical transmitting system is configured to disperse the laser pulse, to make the laser pulses cover a designated field-of-view area. The receiving module includes a receiving circuit and an optical receiving system, the receiving circuit includes an APD array operating in a linear mode and is configured to receive at least some of returning laser pulses upon the laser pulses being reflected back by a measured object, and convert the at least some of the returning laser pulses into an electrical signal.

Abstract: A driving device includes two rotor assemblies, a stator assembly, and a positioning assembly. Each rotor assembly includes a rotation axis and a rotor. The rotor includes a hollow chamber. The two rotor assemblies include a first rotor assembly and a second rotor assembly, a rotation axis of the first rotor assembly is parallel with a rotation axis of the second rotor assembly, a rotor of the first rotor assembly is at least partially embedded in a chamber of a rotor of the second rotor assembly. The stator assembly is surroundingly disposed at an outer side of the two rotor assemblies and drives a rotor. The rotor driven by the stator assembly causes another rotor of one of the first rotor assembly and the second rotor assembly to rotate. The positioning assembly is located outside of the rotors, and limits the rotors to rotate around corresponding fixed rotation axes.

Abstract: A sensor system includes an optical aperture, a light source configured to generate a light pulse along a first optical path, a reflective surface configured to reflect the light pulse from the first optical path to a second optical path for passing through the optical aperture, a beam steering device positioned in the optical aperture and configured to steer the light pulse along different directions to one or more objects in an angle of view of the sensor system, a detector configured to receive a reflected light pulse and convert the reflected light pulse into an electrical signal, the reflected light pulse being reflected back from the one or more objects and passed through the beam steer device, and a spatial filtering device positioned between the beam steering device and the detector to block undesirable light in both the light pulse and the reflected light pulse.

Abstract: A method for controlling a scanning field of view (FOV) of a ranging apparatus includes emitting a light pulse sequence, changing the light pulse sequence to exit at different direction via at least three optical elements, wherein controlling the scanning FOV by controlling the at least three optical elements including at least one of controlling at least one of a scan patterns, a position, or a scanning density of the scanning FOV by controlling rotation speeds of the at least three optical elements, and/or controlling an extension direction of the scanning FOV by controlling initial phases of the at least three optical elements.

Abstract: A ranging device includes a threshold determination circuit and a detection channel. The threshold determination circuit is configured to determine a candidate comparison threshold according to a threshold-influencing factor. The detection channel is configured to receive a light pulse signal reflected by an object, convert the light pulse signal into an electrical signal, compare the electrical signal with the candidate comparison threshold, obtain time information of the electrical signal triggering the candidate comparison threshold, and determine a distance between the object and the ranging device according to the time information.

Abstract: A ranging device includes a light source, a transceiver, a detector, and a light path changing element. The light source is configured to emit a light pulse. The transceiver is configured to collimate the light pulse and converge at least part of reflected light of the light pulse reflected by a detection object. The detector is configured to receive and convert the at least part of the reflected light into an electrical signal for measuring a distance between the detection object and the ranging device. The light path changing element is configured to combine emission light path and reception light path. The light path changing element includes an area configured to transmit or reflect part of the light pulse, and a reception solid angle of the area with respect to the light pulse is 20%-40% of a reception solid angle of the detector with respect to the reflected light.

Abstract: A ranging device includes a transmitter, a collimation element, a converging element, a detector, and at least one of a first pre-shaping element or a second pre-shaping element. The transmitter is configured to emit a light pulse sequence. The collimation element is configured to collimate the light pulse sequence. The converging element is configured to converge at least part of reflected light reflected by an object. The detector is configured to receive and convert the at least part of the reflected light to an electrical signal, and determine at least one of a distance or an orientation of the object with respect to the ranging device according to the electrical signal. An effective aperture of the collimation element is greater than an effective aperture of the first pre-shaping element, and an effective aperture of the converging element is greater than an effective aperture of the second pre-shaping element.

Abstract: A time measurement correction method includes a field programmable gate array (FPGA) determining to enter a self-correction mode of time measurement, and in the self-correction mode, the FPGA controlling to generate a standard signal and the FPGA controlling to obtain the standard signal and collecting measurement data of at least one TDC channel included in the FPGA based on the standard signal. The standard signal is used to correct the at least one TDC channel of the FPGA.

Abstract: A ranging system includes at least two types of a first-type ranging apparatus, a second-type ranging apparatus, and a third-type ranging apparatus. Each of the first-type ranging apparatus and the second-type ranging apparatus includes a ranging device and a scanner. The ranging device includes a light source, a convergent lens, and a receiver. The third-type ranging apparatus includes a ranging device and a scanner. A FOV of the second-type ranging apparatus is smaller than a FOV of the first-type ranging apparatus. A diameter and a focal length of a convergent lens of the second-type ranging apparatus are greater than a diameter and a focal length of a convergent lens of the first-type ranging apparatus, respectively.

Abstract: The present disclosure provides a distance measuring device. The distance measuring device is configured to detect a target scene to generate point cloud data, the point cloud data including a distance and/or an orientation of a detection object relative to the distance measuring device. An accumulation time of the point cloud data of one or more frames is greater than a time interval between outputting the point cloud data of adjacent frames.

Abstract: A ranging system includes a plurality of ranging apparatuses. Each of the plurality of ranging apparatuses is configured to emit a laser pulse sequence, receive a laser pulse sequence reflected by an object, and detect the object according to the laser pulse sequence emitted and the laser pulse sequence received. The two or more ranging apparatuses of the plurality of ranging apparatuses are configured to emit laser pulse sequence with different time sequences and/or to emit different laser pulse sequences.

Abstract: A ranging apparatus includes an emitter, a scanner, a detector, and a controller. The emitter is configured to emit a light pulse sequence. The scanner is configured to change a transmission direction of the light pulse sequence to transmit in different directions in sequence to form a scan field. The detector is configured to receive a reflected light pulse sequence formed by an object reflecting the light pulse sequence and determine at least one of a distance or an orientation of the object relative to the ranging apparatus according to the reflected light pulse sequence. The controller is configured to control the emitter to emit the light pulse sequence at a first emission frequency when scanning the first region and at a second emission frequency higher than the first emission frequency when scanning the second region.

Abstract: Disclosed herein are techniques for implementing a distributed sensor (LIDAR) system with a management system (e.g., a controller) that controls and interfaces with multiple sensors in the distributed sensor system. A representative management system can control an operational state (e.g., power on, reset, over-current protection, etc.), an operating mode (e.g., modes corresponding to varying levels of performance), etc. The management system can combine separate outputs from the individual sensors into a combined output (e.g., point cloud). The management system can assist installation of the sensors, manage a self-test and/or a self-calibration of the sensors, or a combination thereof.

Abstract: Embodiments of the present disclosure provide an amplification circuit. The amplification circuit includes an operational amplifier; and a clamping circuit being respectively connected to an input terminal and an output terminal of the operational amplifier for clamping an input signal of the amplification circuit to cause the input signal of the amplification circuit to fluctuate within a certain range to prevent the operational amplifier from generating a saturating output.