Embodiments of the present invention pertain to the technical field of a radar, and provide a LiDAR and an automated driving device. The LiDAR includes a transceiver component and a scanning component. The transceiver component includes n transceiver modules, where n is an integer and n>1, and each transceiver module includes an emission module and a receiving module that are correspondingly arranged. The emission module is configured to emit an outgoing laser. The receiving module is configured to receive an echo laser, which is a laser returning after the outgoing laser is reflected by an object in the detection region. The scanning component includes a rotation reflector that rotates around a rotation shaft. The rotation reflector includes at least two reflecting surfaces. The n transceiver modules correspond to the at least two reflecting surfaces.

Methods, systems, computer-readable media, and apparatuses for radar or LIDAR measurement are presented. Some configurations include transmitting, via a transceiver, a first beam having a first frequency characteristic; calculating a distance between the transceiver and a moving object based on information from at least one reflection of the first beam; transmitting, via the transceiver, a second beam having a second frequency characteristic that is different than the first frequency characteristic, wherein the second beam is directed such that an axis of the second beam intersects a ground plane; and calculating an ego-velocity of the transceiver based on information from at least one reflection of the second beam. Applications relating to road vehicular (e.g., automobile) use are described.

An optical system may include a first optical assembly and a first scan field expansion assembly. The first optical assembly may include or may be configured as a first flat-field lens. The first flat-field lens may have a first nominal scan field with a first flat focal plane. The first scan field expansion assembly may include one or more first field-expanding optical elements configured to provide a first expanded scan field coinciding with the first flat focal plane. The first expanded scan field may have a cross-sectional width and/or area that exceeds a corresponding cross-sectional width and/or area of the first nominal scan field. A method of additively manufacturing a three-dimensional object may include directing a first energy beam through the first optical assembly, and directing the first energy beam through the first scan field expansion assembly.

A LIDAR sensor for an autonomous vehicle (AV) can include one or more lasers outputting one or more laser beams, one or more non-mechanical optical components to (i) receive the one or more laser beams, (ii) configure a field of view of the LIDAR sensor, and (iii) output modulated frequencies from the one or more laser beams, and one or more photodetectors to detect return signals based on the outputted modulated frequencies from the one or more laser beams.

An image forming apparatus includes a first medium scanned with a first signal, a second medium scanned with a second signal, a rotary polygon mirror that deflects the first and second signals, a synchronization signal generation circuit that generates a synchronization signal representing a time to start scanning the first medium, and at least one pseudo synchronization signal generation circuit that generates a pseudo synchronization signal with the synchronization signal. The pseudo synchronization signal represents a time to start scanning the second medium. Based on a previously calculated period of the synchronization signal and a period of the synchronization signal counted on a particular surface of the polygon mirror, the pseudo synchronization signal generation circuit generates a particular value for generating the pseudo synchronization signal. Based on the particular value, the pseudo synchronization signal generation circuit starts generating the pseudo synchronization signal when the synchronization signal is enabled.

Provided is a light source device including a plurality of light emitting points arranged in matrix within a first cross section parallel to a first direction and a second direction. When light emitting points are projected within a second cross section parallel to first direction and a third direction perpendicular to first cross section, light emitting points have equal intervals between projections adjacent to each other. When light emitting points are projected within a third cross section parallel to second and third directions, light emitting points have equal intervals between projections adjacent to each other. An interval between light emitting points adjacent to each other in a row of matrix, an interval between light emitting points adjacent to each other in a column of matrix, an angle between row and column, an angle between column and first direction, and an angle between row and second direction are appropriately set.

Various technologies described herein pertain to multiple beam, single mirror lidar. A multiple beam, single mirror lidar system can include a 2D MEMS mirror and a photonic integrated circuit. The photonic integrated circuit includes a plurality of lidar channels, each including a transmitter and a receiver. In the photonic integrated circuit, the lidar channels are directed at a common point on the 2D MEMS mirror. The lidar channels are oriented with relative offset angles. Thus, the lidar channels output beams that are directed at the common point on the 2D MEMS mirror and are oriented with relative offset angles.

An optical scanning apparatus includes first and second light sources, a rotatable polygonal mirror, a motor, first and second mirrors, first and second lenses, and a casing. Within a mounting range, a top wall of an accommodating portion is provided with at least one projection projecting toward an opening of the accommodating portion. The projection extends from a first side wall to a second side wall of the accommodating portion. The top wall includes a recess formed opposite from the projection, and is free from a portion projecting toward the opening over a range from the first side wall to the second side wall, other than the projection in the mounting range. A free end portion of the projection is in a position remoter from the opening than a reflecting surface of the rotatable polygonal mirror is with respect to a rotational axis direction of the motor.

A device for signal light display and environment detection includes a first light source for emitting visible light in a first spectral range in a temporally modulated manner, and a light source for emitting invisible light in a second spectral range. A lighting surface is designed to reflect and/or transmit light in the first spectral range in a diffused manner. A material layer is transparent for light in the second spectral range, or reflects this light with almost no diffusion. A deflection unit in the device deflects the light from the first light source onto the lighting surface and the light from the second light source onto the material layer. The material layer is located in relation to the deflection unit such that invisible light deflected onto the material layer is emitted for environment detection in an environment of the device.

An autonomous vehicle includes a LIDAR system that includes a waveguide array, a collimator configured to receive a plurality of beams from the waveguide array and output a plurality of collimated beams, and a scanner configured to adjust a direction of the plurality of collimated beams. The vehicle also includes one or more processors configured to determine a range to an object based on a return signal received from reflection or scattering of the plurality of collimated beams by the object and to control operation of at least one of a steering system or the braking system based on the range.