LiDAR (Light Detection and Ranging) is a sensor that is similar to radar but uses laser light. The sensor became popular when Apple started including it in some recent iPad and iPhone models.
But lidar was already in use long before Apple incorporated the technology into its devices. These sensors were developed in the 1960s as one of the first uses for laser light.
LiDAR and radar work in a similar way, but radar is better at localization, while LiDAR can generate detailed 3D images and is used in many different fields such as astronomy, automobiles, etc.
LiDAR sensors are used in different fields:
LiDAR sensors are used in many areas, including:
1- Space exploration:
LiDAR sensors are used in astronomy and 3D mapping in space. During the Apollo 15 flight in 1971, astronauts used lidar to map the surface of the moon. The same technology is still used today, as NASA's Clever helicopter sent to Mars relies on it to function during takeoff and landing.
2- Studying the depths of the ocean:
Science ships use LiDAR sensors in their hulls to create 3D maps of the sea floor that can help better study the ocean depths.
3- Traffic and traffic:
LiDAR sensors are used in road traffic in various ways, for example to measure the number of vehicles traveling a particular road in order to better plan that route. Devices such as lidar sensors are also used to monitor road conditions and high-speed vehicles in real time. These devices work better than speed cameras because when scanned, they can detect offending license plates.
Notable devices with LiDAR sensors:
Since Apple integrated a LiDAR sensor into its iPad Pro models in 2020, many electronics manufacturers have begun integrating LiDAR into their devices.
Although no other brand is using LiDAR in their phones or tablets yet, many electronic devices have LiDAR sensors including:
1- Robot vacuum:
Modern robotic vacuum cleaners rely on a range of technologies, including lidar sensors, which can accurately map their surroundings for a better clean.
2- Self-driving cars:
The use of (proximity sensors) in vehicles is not new because it can help us avoid some driving problems, but self-driving cars need advanced technology to avoid serious accidents.
Therefore, LiDAR sensors are an important part of most safety systems for self-driving cars. It provides detailed, real-time information about things around the vehicle, such as buildings, other vehicles, and people.
3- Equipment for architecture and interior design:
Devices equipped with custom LiDAR sensors allow architects and interior designers to create 3D maps of indoor and outdoor spaces. These sensors save measurement time and develop better solutions for customers.
Hardware, including LiDAR sensors, used in construction will be integrated into the 3D modeling software that professionals use to create buildings and furniture. This ensures that the real project is as close as possible to the digital model.