How Laser Rangefinders Work


Bushnell's laser rangefinders use an invisible, eye-safe Class 1 Laser beam (as classified by the FDA) which is "bounced" off distant objects with the press of a button. Then, the rangefinder's high-speed digital clock measures the time it takes for the laser beam to reach a target and return to the unit. Next, using advanced digital electronics, the rangefinder instantly calculates the distance within + / – 1 yard/meter and shows the range in either yards or meters on a through-the-lens LCD Display. The entire process is so fast that less than a second elapses between the time you press the button to generate a laser beam to the time the exact range to your target is displayed.