초록 ▼

A method and apparatus for accurately determining the location of a component picked up by a pickup device for facilitating accurate mounting of the component. The method employs an arrangement wherein diffusion-type light sources can be employed and the coordinates of the corners of the component a

A method and apparatus for accurately determining the location of a component picked up by a pickup device for facilitating accurate mounting of the component. The method employs an arrangement wherein diffusion-type light sources can be employed and the coordinates of the corners of the component are determined by measuring the shifting of the shadow of the component on a receptor by illuminating the light sources in sequence. In some instances, the accuracy of the measurement can be improved by rotating the component this being particularly useful if the component has a shape that deviates greatly from a square shape.

대표청구항 ▼

[ What is claimed is:] [1.] A method for optically determining the position of a component picked up by a pickup device comprising the step of positioning the pickup device and a held component in a sensing station between a light receptor and a diffusion-type light source spaced at a known transver

[ What is claimed is:] [1.] A method for optically determining the position of a component picked up by a pickup device comprising the step of positioning the pickup device and a held component in a sensing station between a light receptor and a diffusion-type light source spaced at a known transverse distance so that the light source can cast a shadow caused by the component upon the receptor, moving of the origin of the light source relative to the component in a direction parallel to the plane of the receptor for effecting a shifting the edge of the shadow on the receptor, and calculating from the shifting of the shadow the location of an edge of the component.