Laser technology is one of the major human inventions of the 20th century, following atomic energy, computers, and semiconductors. it is known as the "fastest knife," the "most accurate ruler," and the "brightest light." Laser technology offers advantages such as high directionality, monochromaticity, brightness, and power, leading to widespread use in the sensor field.

The changes brought to sensors by laser technology are mainly reflected in the following aspects:

1. Improved Measurement Accuracy

Lasers possess high monochromaticity, which effectively eliminates environmental light interference and improves sensor accuracy. For example, laser rangefinders calculate distance by measuring the round-trip time of a laser beam, achieving millimeter-level precision.

2. Extended Measurement Range

High brightness and high power allow lasers to penetrate obstacles such as smoke and dust, extending the measurement range. For instance, LiDAR can be used in autonomous driving to accurately measure distances even in complex environments.

3. Reduced Sensor Costs

The continuous development of laser technology has led to a reduction in the cost of laser sensors, making them more popular. For example, LiDAR is increasingly used in the field of autonomous driving.

Applications of laser technology in the sensor field are very broad, mainly including:

● Ranging: Laser rangefinders can be used to measure distance, speed, angle, etc.

● Positioning: LiDAR can be used for positioning, navigation, obstacle avoidance, etc.

● Imaging: Laser imagers can be used for imaging, ranging, identification, etc.

● Detection: Laser detectors can be used to detect the shape, size, and material of objects.

Laser technology has given sensors new vitality, opening a new chapter in sensor development. As technology continues to evolve, laser sensors will be applied in more areas, bringing more convenience to people's lives.