| 摘要 |
A method of orienting a stream of components, which components can assume any one of a small number of different stable orientation and have distinguishing features on one or more portions comprising: arresting the motion of a said component and positioning it in relation to an incident beam of light so that said beam illuminates a local area within the component where a distinguishing feature will lie if the component is in a predetermined orientation, and monitoring the transmitted or reflected beam by photodetector means, said monitoring being synchronised with the positioning of the component to obtain an output from said photodetector means which is dependent substantially only on said local area; and using the output of said photodetector means to detect the orientation of the component and to effect any necessary reorientation to bring it into a desired orientation, or to segregate it from other components which have the desired orientation. |
