An optical testing apparatus is used in testing an optical measuring instrument that provides incident light from a light source to an incident object and receives reflected light of the incident light at the incident object. The apparatus includes an incident light receiving section, a light signal providing section, an imaging section, and an optical axis misalignment deriving section. The incident light receiving section receives incident light. The light signal providing section provides a light signal to an incident object after a predetermined delay time since the incident light receiving section has received the incident light. The imaging section images the incident light. The optical axis misalignment deriving section derives misalignment of the optical axis of the incident light with respect to the incident light receiving section based on misalignment between the incident light receiving section and the imaging section as well as an imaging result with the imaging section.

A coherent LIDAR imaging system includes a laser source; an optical splitter/recombiner designed to split the laser radiation into a reference beam and into an object beam and to superpose the reference beam on a reflected object beam reflected by the scene; and an optical imager creating an image of the scene on a detector. The detector includes an array of pixels designed for detecting the reflected object beam and the reference beam which together form a recombined beam having a beat frequency representative of a range of the illuminated scene. The optical splitter/recombiner is configured to form an intermediate image of the reference beam in an intermediate image plane perpendicular to the optical axis.

Disclosed is a radiation arrangement for a multispectral active remote sensing device. The arrangement includes a transceiver, a detector, and a wavelength-adjustable narrow band stopper.

In a ranging image sensor, each pixel includes an avalanche multiplication region, a charge distribution region, a pair of first charge transfer regions, a pair of second charge transfer regions, a well region, a photogate electrode, a pair of first transfer gate electrodes, and a pair of second transfer gate electrodes. The first multiplication region of the avalanche multiplication region is formed so as to overlap the charge distribution region and so as not to overlap the well region in the Z direction. The second multiplication region of the avalanche multiplication region is formed so as to overlap the charge distribution region and the well region in the Z direction.

An embodiment can provide a motor comprising: a shaft; a rotor coupled to the shaft; a stator disposed between the shaft and the rotor; a bearing disposed between the shaft and the stator; and a base plate, wherein: the rotor includes a yoke coupled to the shaft; the base plate includes a body, a first partition protruding from the body, and a second partition extending from the first partition; the first partition is disposed between the bearing and the stator; a portion of the second partition is disposed to be overlapped with the first partition; and the first partition is in contact with the lateral surface of an outer ring of the bearing and the second partition is in contact with the one surface of the outer ring of the bearing.

The present application discloses a LiDAR and an autonomous driving vehicle. The LiDAR includes a rotary device, a laser transceiving assembly, and a reflecting assembly. The rotary device has a first rotary part and a second rotary part that are configured to rotate relative to each other around a rotary axis. The laser transceiving assembly is connected to the first rotary part and configured to emit an emergent laser beam and receive a reflected laser beam. The reflecting assembly is connected to the second rotary part and has at least two reflectors. The at least two reflectors are arranged around the rotary axis, and at least two of included angles between the reflectors and a plane perpendicular to the rotary axis are different. In the present application, the same reflector can reflect both the emergent laser beam and the reflected laser beam.

A distance measurement apparatus of a scanning type provided with a two-dimensional micro electro mechanical system (MEMS) mirror that reflects a laser beam includes: a first detector that detects a mirror angle of the two-dimensional MEMS mirror and outputs an angular signal that indicates the mirror angle; and a processor that calculates an amplitude error and a phase error between amplitude and a phase of the angular signal and amplitude and a phase of a reference angle signal, and corrects a resonance drive waveform of a drive signal that drives, of two mutually orthogonal axes of the two-dimensional MEMS mirror, one axis on a resonance drive side on a basis of the amplitude error and the phase error.

Disclosed herein are system and method embodiments to implement a scout pulse LiDAR. An embodiment operates by emitting a leading sequence of two or more discrete pulses with a constant timing offset and large intensity ratio. These leading pulses are each called a ‘scout pulse’ because they scout ahead of the primary pulse to detect high intensity targets, which would otherwise saturate the detector. In the simplest configuration, there are only two pulses, one primary pulse (lagging, high power/intensity) and one scout pulse (leading, low power/intensity). In more complex configurations, there may be any number of multiple scout pulses, each with a unique time delay and intensity. In any configuration, the signals are emitted in order of ascending intensity, with the lowest intensity signal in front (first), and the highest intensity signal in the back (last) within the pulse train.

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.

A coaxial lidar system includes one or more emitter channels and one or more sensor channels that share an optical module. A diffractive waveguide can be used to redirect received light from the shared optical module to the sensor channels.