Microvision. has been granted a patent for an eye-safe light detection and ranging system. The system utilizes a virtual protective housing to emit short-range and long-range infrared laser pulses, ensuring safety at varying distances while measuring object distances in a defined field of view. 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 June 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. A comparator assesses these distances against a dynamically adjusted threshold that increases with the apparatus's velocity, enabling the detection of nearby objects. Additionally, a virtual protective housing circuit allows the laser to emit a second, higher-energy pulse if no object is detected within a short range, facilitating long-range detection while ensuring safety.
Further enhancements to the apparatus include a second IR light detector and TOF circuitry, which work in tandem to improve measurement accuracy. The design accommodates 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 proximity, and storing depth data in a 3D point cloud format. The technology aims to provide precise depth measurements while maintaining eye safety, making it suitable for various applications 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.
