Laser Diffuse Reflective Photo Sensor, 50-300mm/70-500mm

The laser diffuse reflection photoelectric sensor utilizes a collimated laser as its light source. When the laser beam strikes the surface of a target object, it creates scattered reflected light. This light is then detected by a receiver, which generates a switching signal. Compared to standard LED diffuse reflection sensors, lasers offer a smaller spot size, stronger directionality, and higher detection accuracy. This enables stable detection at greater distances and with smaller object sizes.

Laser diffuse reflection sensors transmit and receive light on the same side, eliminating the need for reflective plates or through-beam structures, allowing for more flexible installation. Through-beam sensors offer the longest detection range and strongest interference resistance but require precise alignment of transmitter and receiver. Reflective sensors require high-quality reflectors and are suited for detecting large, irregular objects. Laser diffuse sensors excel in precision, spot control, and close-range stability, enabling detection of small objects with low transparency or distinct surface textures.

Laser diffuse reflection sensors detect diverse materials including cardboard boxes, bottles, plastic parts, metal components, PCBs, sheet materials, and workpiece edges. Their fine laser spot enables identification of small holes, narrow edges, or fast-moving parts, making them ideal for packaging, electronics manufacturing, logistics conveyors, and automated assembly equipment. For objects with highly reflective surfaces (e.g., mirror-like metals), detection is possible via diffuse reflection scattering. However, for fully transparent objects, background suppression or polarized reflective sensors are recommended for more stable results.