Acuity laser sensors use one of two non-contact measurement principles. Laser triangulation sensors measure distance by projecting a beam of laser light that creates a spot on a target surface. Reflected light from the surface is viewed from an angle by a CMOS detector array inside the laser sensor. The target’s distance is calculated from the image pixel data using the sensor’s microprocessor. The distance is transmitted through serial communications or analog outputs.
Acuity laser rangefinders employ a “time-of-flight” principle that measures the time light takes to travel to the target and back. The time delay is directly measured by comparing the signal from the laser with the delayed signal returning from the target. Acuity’s technology offers several advantages over competitive LIDAR sensors, including the ability to measure to dark and shiny targets and very high sampling speeds.