# LiDAR System for Seeing Through Shiny Objects > Toyota's patent on a LiDAR system that can ignore blinding reflections from shiny surfaces to better see what's around a vehicle. - **Patent:** US 11041957 - **Original title:** Systems and methods for mitigating effects of high-reflectivity objects in LiDAR data - **Owner:** Toyota Motor Engineering and Manufacturing North America - **Granted:** 2021 - **Status:** Active - **Times cited:** 9 - **Field:** automotive, aerospace, robotics, consumer_electronics, software ## What it does This patent describes a system for self-driving cars that uses LiDAR, a type of laser radar, to map the surroundings. Sometimes, shiny objects like a wet road or a polished car can send back such strong reflections that they blind the LiDAR sensor, making it impossible to see objects behind or near the shiny surface. This invention tackles that by first scanning with a standard laser (initial intensity) to get a general picture (first point cloud). If it detects a super-bright, reflective object, it then scans again with a different laser setting (scanning intensity) or direction. This second scan is designed to avoid or minimize the blinding reflection, allowing the system to capture data about objects that would otherwise be hidden. Finally, it combines the data from both scans into a 'composite point cloud' that gives a clearer, more complete view of the environment, even with those tricky shiny surfaces present. ## What it does NOT cover - LiDAR systems that cannot detect or adapt to highly reflective objects. - Methods that only use a single scan intensity and do not adjust for reflections. - Systems that fail to combine data from multiple scans into a single, improved view. - LiDAR systems that are not integrated into a vehicle or used for environmental sensing. ## The clever bit The core innovation is dynamically re-scanning with adjusted laser parameters specifically when a blinding reflection is detected, then intelligently merging the data to overcome the interference, rather than just discarding the corrupted data. ## Real-world examples 1. Toyota vehicles equipped with advanced driver-assistance systems 2. Future autonomous driving systems 3. LiDAR units in robotic navigation systems ## Why it matters Reliable environmental sensing is crucial for autonomous vehicles. LiDAR is a key technology for this, but its performance can be degraded by common road conditions like rain or glare. This patent addresses a specific, significant challenge in making LiDAR robust enough for real-world driving, especially in varying weather and lighting. ## Frequently asked questions ### What does LiDAR System for Seeing Through Shiny Objects cover? Toyota's patent on a LiDAR system that can ignore blinding reflections from shiny surfaces to better see what's around a vehicle. ### Who owns patent US 11041957? Toyota Motor Engineering and Manufacturing North America owns this patent, granted in 2021. ### When does this patent expire? This patent is expected to expire on June 25, 2038, when the invention enters the public domain. ### What is patent US 11041957 cited by? This patent has been cited by 9 later patents that build on its ideas. ### What problem does this patent solve? Reliable environmental sensing is crucial for autonomous vehicles. LiDAR is a key technology for this, but its performance can be degraded by common road conditions like rain or glare. This patent addresses a specific, significant challenge in making LiDAR robust enough for real-world driving, especially in varying weather and lighting. ### What does this patent NOT cover? LiDAR systems that cannot detect or adapt to highly reflective objects. **Full plain-English explainer:** https://patentbrief.org/patent/us/11041957/systems-and-methods-for-mitigating-effects-of-high-reflectivity-objects-in-lidar **Original patent:** https://patents.google.com/patent/US11041957 --- _Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._ ## Related patents Semantically similar inventions in the PatentBrief corpus: - [Toyota's Patent on Detecting Road Hazards with LIDAR](https://patentbrief.org/patent/us/12292511/method-for-road-debris-detection-using-low-cost-lidar) — Toyota's 2025 patent describes a car system using LIDAR to spot road problems by comparing how light bounces off the road to a known 'good' road signal. - [How Self-Driving Cars Detect Dirty Lidar Sensors](https://patentbrief.org/patent/us/12130389/methods-and-systems-for-detecting-sensor-occlusions) — Waymo's 2024 patent on a self-driving car system that uses two scans from a rotating Lidar sensor to spot dirt or obstructions on its lens. - [Lidar System for Spotting Retro-Reflective Objects](https://patentbrief.org/patent/us/12736637/hyper-temporal-lidar-using-multiple-matched-filters-to-determine-target) — This patent describes a lidar system that uses a special signal processing technique to identify objects that reflect light directly back to its source, like road signs or safety vests. - [How a Smart LIDAR System Adapts to Noise for Better Distance Sensing](https://patentbrief.org/patent/us/20240045038/noise-adaptive-solid-state-lidar-system) — This patent describes a LIDAR system that uses multiple lasers and detectors, and intelligently adjusts the electrical settings of specific detectors to reduce noise and improve distance measurements in different lighting conditions. - [How Car Factories Calibrate LIDAR Sensors for Self-Driving Cars](https://patentbrief.org/patent/us/11391826/vehicle-lidar-sensor-calibration-system) — This patent describes a system for car factories to precisely adjust a vehicle's LIDAR sensors using special floor and wall targets, ensuring they accurately map the world for features like self-driving.