Microvision. has been granted a patent for an eye-safe light detection and ranging system. The system utilizes a laser light source to emit short and long-range infrared pulses, ensuring safety at varying distances while measuring object distances through a scanning mechanism and time-of-flight circuitry. GlobalData’s report on Microvision gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Microvision, Lidar-assisted navigation was a key innovation area identified from patents. Microvision's grant share as of July 2024 was 56%. Grant share is based on the ratio of number of grants to total number of patents.
Eye-safe light detection and ranging system with virtual housing
The patent US12019188B2 describes an advanced apparatus designed for depth measurement using infrared (IR) laser light pulses. The system includes a laser light source that emits IR pulses at varying energy levels, a scanning mirror assembly for directing these pulses along a designated scan trajectory, and an IR light detector to capture reflections from objects within the field of view. The apparatus employs time-of-flight (TOF) circuitry to calculate distances to objects at multiple measurement points, utilizing a comparator to assess these distances against a dynamically adjusted threshold that increases with the apparatus's velocity. A unique feature of the system is its virtual protective housing circuit, which allows for the emission of higher-energy IR pulses if no objects are detected within a short range, thereby enabling long-range detection while maintaining safety standards.
Additionally, the apparatus may include a second IR light detector and TOF circuitry, enhancing its measurement capabilities. It is designed to be mounted on a moving platform, with energy levels of the emitted pulses adjusted based on the platform's speed. The system also incorporates visible laser light sources, with circuitry to modulate their power in response to detected reflections, ensuring safety and efficiency. The method outlined in the patent details the process of generating and scanning IR laser light pulses, determining object presence based on TOF measurements, and storing the resulting depth data in a 3D point cloud format. This innovative technology aims to improve object detection and distance measurement in various applications, particularly in dynamic environments.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
