US Patent 7949427 Methods and apparatus for dispensing solid articles

According to embodiments of the present invention, a method for detecting solid articles using an apparatus including a sensor system is provided. The sensor system includes a radiation detector and a radiation emitter configured to direct radiation onto the radiation detector. The radiation detector is operative to generate detector signals proportional to the radiation received thereby. The method includes moving the radiation emitter and/or the radiation detector relative to the other. According to some embodiments, the solid articles are solid pharmaceutical articles.