Sensors Reflective photosensor (photoreflector) RPR-220 The RPR-220 is a reflective photosensor. The emitter is a GaAs infrared light emitting diode and the detector is a highsensitivity, silicon planar phototransistor. A custom lamp was developed to enable the achievement of a smaller package than with conventional reflectors. Applications Compact disk players, Copiers, Game machines, Office automation equipment Features 1) A plastic lens is used for high sensitivity. 2) A built-in visible light filter minimizes the influence of stray light. 3) Lightweight and compact. Absolute maximum ratings (Ta = 25C) 260 External dimensions (Units: mm) Sensors RPR-220 Electrical and optical characteristics (Ta = 25C) Electrical and optical characteristic curves 261 Sensors Circuit for testing transfer characteristics 262 RPR-220