The principle of angle measurement by a laser distance measuring is mainly based on trigonometric relationships. Alaser distance measuring emits a laser beam, which is reflected back to the rangefinder when it hits the target object. The rangefinder calculates the distance to the target by measuring the time the laser takes to travel back and forth. For angle measurement, it relies on internal optical systems or electronic sensors.
Take single-axis angle measurement as an example: suppose the rangefinder is fixed at a reference point. When the target object changes angle relative to the rangefinder, the position where the laser hits the target also changes. The internal sensors of the rangefinder can detect this change, calculate the deviation from the reference position, and then determine the angle using trigonometric functions. It’s similar to how our eyes work: when our head is stationary and we turn our eyes to look at objects in different directions, our brain can judge the direction and angle of the objects based on information like the extent of eye movement.
These trigonometric functions—basic mathematical functions such as sine, cosine, and tangent—are key to calculating angles using known information like distance.
This principle embodies the precision and intelligence of modern technology. It skillfully integrates optics, electronics, and mathematics, enabling the rangefinder to not only measure distance but also accurately measure angles, providing extremely convenient and precise measurement tools for many fields such as construction surveying and military reconnaissance.
Application case: Outdoor construction surveying projects.
The angle-measuring function of the laser rangefinder is amazing, like having a pair of super sharp eyes—it can “see” clearly no matter which direction the target is in. When I hold it to measure a distant building, it first emits a laser, then receives the reflected light; calculating the distance is a piece of cake. As for angle measurement, it seems to have an ultra-precise little world inside. When I turn the rangefinder slightly, it can accurately calculate the angular change relative to the target. It’s like when we play shooting games: to accurately aim at enemies, we need to know not only the distance but also the angle—and this laser rangefinder does exactly that.
