Moving object detecting photointerrupter and electronic device using the same

摘要

A moving object detecting photointerrupter includes one light emitting element for emitting light, at least two light receiving elements for receiving and detecting light emitted from the light emitting element and reflected off a moving object, and a detecting programmed logic circuitry for detecting movement of the moving object based on detection output from the light receiving elements when the light reflected off the moving object is received.