ROHM’s recommended photoreflector is the RPR-0521RS that integrates brightness and proximity sensors along with an infrared LED and photo IC. It is characterized by a low-noise structure, achieved using ROHM's proprietary secondary mold technology, resulting in an extremely high signal-to-noise ratio. The graph on the right shows a comparison of distance characteristics with other companies. Repeated distance measurements were carried out using a reflector at N=1. The vertical axis denotes optical output and the horizontal axis the detection distance. The different colors of the lines indicate the number of repetitions. ROHM is shown on the left and the competitor on the right. ROHM enables stable output even at zero, and ensures stable output even at long distances, resulting in excellent linearity. The repeatability is also high, and the linearity is virtually the same for all repetitions. In contrast, the output of the competitor product is unstable at long distances with noise only at zero. This feature of clean output linearity facilitates threshold setting during application development and makes the RPR-0521RS an easy-to-use, all-in-one brightness proximity integrated sensor.