Innovusion, Inc.

Other

Yufeng Li

Junwei Bao

Yimin Li

Rui Zhang

Peng Wan

Haosen Wang

Jim Weijian Li

Ning-Yi Neil Wang

Gang Zhou

Barry Loveridge

Gil Salman

Randy Xi Li

Embodiments discussed herein refer to LiDAR systems that use avalanche photo diodes for detecting returns of laser pulses. The bias voltage applied to the avalanche photo diode is adjusted to ensure that it operates at desired operating capacity.

Compensation circuitry for lidar receiver systems and method of use thereof

A LiDAR system is provided. The LiDAR system comprises a plurality of transmitter channels and a plurality of receiver channels. The plurality of transmitter channels are configured to transmit a plurality of transmission light beams to a field-of-view at a plurality of different transmission angles, which are then scanned to cover the entire field-of-view. The LiDAR system further comprises a collection lens disposed to receive and redirect return light obtained based on the plurality of transmission light beams illuminating one or more objects within the field-of-view. The LiDAR system further comprises a plurality of receiver channels optically coupled to the collection lens. Each of the receiver channels is optically aligned based on a transmission angle of a corresponding transmission light beam. The LiDAR system further comprises a plurality of detector assemblies optically coupled to the plurality of receiver channels.

Fiber-based transmitter and receiver channels of light detection and ranging systems

An apparatus of a light detection and ranging (LiDAR) scanning system for at least partial integration with a vehicle is disclosed. The apparatus comprises an optical core assembly including an oscillating reflective element, an optical polygon element, and transmitting and collection optics. The apparatus includes a first exterior surface at least partially bounded by at least a first portion of a vehicle roof or at least a portion of a vehicle windshield. A surface profile of the first exterior surface aligns with a surface profile associated with at least one of the first portion of the vehicle roof or the portion of the vehicle windshield. A combination of the first exterior surface and the one or more additional exterior surfaces form a housing enclosing the optical core assembly including the oscillating reflective element, the optical polygon element, and the transmitting and collection optics.

Compact lidar systems for vehicle contour fitting

A compact LiDAR device is provided. The compact LiDAR device includes a first mirror disposed to receive one or more light beams and a polygon mirror optically coupled to the first mirror. The polygon mirror comprises a plurality of reflective facets. For at least two of the plurality of reflective facets, each reflective facet is arranged such that: a first edge, a second edge, and a third edge of the reflective facet correspond to a first line, a second line, and a third line; the first line and the second line intersect to form a first internal angle of a plane comprising the reflective facet; and the first line and the third line intersect to form a second internal angle of the plane comprising the reflective facet. The first internal angle is an acute angle; and the second internal angle is an obtuse angle.

Compact LiDAR design with high resolution and ultra-wide field of view

A light detection and ranging (LiDAR) scanning system is provided. The system comprises a light steering device; a galvanometer mirror controllable to oscillate between two angular positions; and a plurality of transmitter channels configured to direct light to the galvanometer mirror. The plurality of transmitter channels are separated by an angular channel spacing from one another. The system further comprises a control device. Inside an end-of-travel region, the control device controls the galvanometer mirror to move based on a first mirror movement profile. Outside the end-of-travel region, the control device controls the galvanometer mirror to move based on a second mirror movement profile. The second mirror movement profile is different from the first mirror-movement profile. Movement of the galvanometer mirror based on the first mirror movement profile facilitates minimizing instances of scanlines corresponding to the end-of-travel region having a pitch exceeding a first target pitch.

Movement profiles for smart scanning using galvonometer mirror inside LiDAR scanner

Embodiments discussed herein refer to LiDAR systems and methods that monitor for fault conditions that could potentially result in unsafe operation of a laser. The systems and methods can monitor for faulty conditions involving a transmitter system and movement of mirrors in a scanning system. When a fault condition is monitored, a shutdown command is sent to the transmitter system to cease laser transmission. The timing by which the laser should cease transmission is critical in preventing unsafe laser exposure, and embodiments discussed herein enable fault detection and laser shutoff to comply with laser safety standards.

LiDAR safety systems and methods

Embodiments discussed herein refer to LiDAR systems and methods that enable substantially instantaneous power and frequency control over fiber lasers. The systems and methods can simultaneously control seed laser power and frequency and pump power and frequency to maintain relative constant ratios among each other to maintain a relatively constant excited state ion density of the fiber laser over time.

Lidar systems and methods for exercising precise control of a fiber laser

In accordance with some embodiments, a light detection and ranging (LiDAR) system comprise: a control system housing; a first LiDAR head housing separate and distinct from the control system housing; a light source within the control system housing configured to produce a first pulse signal; a light detector within the control system housing configured to detect a first return pulse signal associated with the pulse signal; a first pulse steering system within the first LiDAR housing configured to direct the first pulse signal in a first direction; a first fiber coupled to the light source and the first pulse steering system, the first fiber configured to carry the first pulse signal from the light source to the first pulse steering system; and a second fiber configured to carry a first returned pulse signal from the first LiDAR head housing to the light detector.

Growing community of inventors

Mountain View, CA, United States of America

Yufeng Li