Rangefinder. Wednesday , May 02nd , 2018 - 13:34:50 PM
Dynamics Laser Rangefinders use an invisible, narrow laser that is pointed at an object to determine the distance it is from the user. The laser beam is then reflected off that object and back to the laser rangefinder instrument. The rangefinder then uses a super high speed clock to determine the amount of time it took for the laser to bounce back and then uses a mathematical equation to calculate the amount of distance between the rangefinder and the target object. The whole process is called "Time of Flight" in scientific terms.
Last, it should be noted that all laser rangefinders feature a reticle (the crosshair or other type of aiming point you see when looking through your rangefinder). However, many rangefinders use LCD readouts with reticles that appear as black lines that you superimpose over the target you want to range but, this type of reticle if often difficult to distinguish against a dark background or in low light conditions. Therefore, other rangefinders have illuminated, LED, reticles as well. However, even though the brightness of the LEDs is adjustable (sometimes automatically), in bright conditions, it can be overwhelmed by the ambient light and thus it cannot be seen even at the highest settings and yet, in the evening when your eyes are accustomed to the lower light levels, the reticle is often so bright that it impairt your night vision even when set to the lowest settings. Also, this same issue pertains to the other information displayed on your screen such as yardage numbers and modes. Therefore, the best option is to choose a rangefinder with a backlight screen which gives you the capability to view your information in all light conditions.
As you can guess, the rangefinder’s laser helps pinpoint the distance between you and an object. To delve deeper, laser rangefinders typically use three different lenses: the viewfinder, the main camera lens and the reflector lens. When using the rangefinder, you look through the viewfinder and the main lens is responsible for gathering light to help the device focus. The third lens overlays the target on the viewfinder so you can pinpoint your target. When you press the button on the electronic rangefinder, a laser shoots out from the rangefinder and towards your target. The laser bounces off your target and gets sent back to the rangefinder, which immediately calculates the distance between you and it.
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