What is the difference between a laser displacement sensor and a laser distance sensor?
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- Issue Time
- Jun 6,2025
A：
The main differences between laser displacement sensors and laser ranging sensors are measurement accuracy, measurement distance and application scenarios:
1. Laser Displacement Sensor
· Measurement object: small displacement changes at close range.
· Precision: high, usually up to micrometer level (μm).
· Measurement distance: short, generally between tens of millimeters and hundreds of millimeters.
· Application scenarios: high-precision positioning, thickness detection, profile measurement, surface profile detection, etc. in industrial automation.
2. Laser Distance Sensor
· Measurement object: position or distance of distant targets.
· Precision: low, generally millimeter to centimeter level.
· Measurement distance: long, up to tens of meters or even hundreds of meters.
· Application scenarios: warehousing logistics, robot navigation, vehicle positioning, surveying and mapping, and other occasions that require long-distance distance detection.
Summary and comparison:
| Project | Laser displacement sensor | Laser distance sensor |
|---|---|---|
| Measuring distance | Short (mm to cm) | Long (meter level) |
| Measuring accuracy | High (μm level) | General (mm level) |
| Application focus | Precision measurement | Distance positioning |
| Common applications | Workpiece thickness, displacement detection | Automatic navigation, object recognition |
The choice of sensor depends mainly on whether your application requires accuracy or range.