| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for detecting missing parts capable of accurately detecting presence/absence of inspection objects on an inspection object surface such as whether or not an electronic component is mounted on a substrate. <P>SOLUTION: A method for detecting missing parts inspects presence/absence of an inspection object 22 on an inspection object surface (an upper surface of a substrate 21) with luminance information captured by a camera 11. Either one of the surface of the inspection object 22 and the inspection object surface (the upper surface of the substrate 21) is configured to be a rugged surface 22b where reflected light 32 is less likely to enter the camera 11. Thereby, the presence/absence of the inspection object 22 produces a significant intensity difference in the luminance on an image captured by the camera 11. <P>COPYRIGHT: (C)2013,JPO&INPIT |
