Laser rangefinders are designed for single-point distance measurement. They can be aimed at specific objects (e.g., golf flags or buildings) to provide precise distance values. In contrast, LiDAR (Light Detection and Ranging) systems scan the entire environment. This generates a 3D point cloud. This allows for a detailed mapping of terrain, structures, or obstacles.
Laser rangefinders only provide a single distance reading. Manual aiming is required. LiDAR, on the other hand, uses a rotating mirror or solid-state array. It scans the laser beam across a wide field of view (up to 360° horizontally). This captures millions of data points. This enables LiDAR to create comprehensive 3D models. Rangefinders lack the scanning capability.
Accuracy, ranging, and cost
Laser rangefinders provide high accuracy (±1-5 cm) at short to medium distances (up to 1-2 km). They are also low cost (consumer-grade models start at 50-200 cm). LiDAR covers a wider area. It can detect farther (up to 10 km for aerial systems). But the accuracy is slightly lower (±2-10 cm). The price is also higher (automotive-grade LiDAR costs $1,000 to $10,000+).
Laser rangefinders are commonly used in sports (golf, hunting). Construction (height measurement) and surveying. LiDAR dominates in autonomous vehicles (obstacle detection). Forestry (canopy analysis). Archeology (site mapping) and urban planning (3D city modeling). The choice of which technology to choose depends on whether the task requires simple distance data or detailed spatial reconstruction.
Choose a laser rangefinder when you need fast, affordable and accurate single-point measurements. Choose LiDAR for large-scale, high-resolution 3D mapping, especially in dynamic or complex environments. While both technologies utilize lasers, their individual capabilities enable them to meet different professional and industry needs.
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