PROBLEM TO BE SOLVED: To inspect all pieces for defects in the surface state of a lead frame which continues in the form of a strip, while conveying the lead frame continuously. ;SOLUTION: This device includes a CCD(charge-coupled device) camera 6c, which captures an image of one piece of a lead frame 3 taking the form of a strip conveyed, and a control means 8 for performing an inspection process in which, from the input of the image captured by the CCD camera 6c, the means 8 analyzes the brightness of the image to compare the analytical value obtained with a reference value prestored in a storage portion, to detect defects in the lead frame 3. The CCD camera 6c captures images within a viewing field involving one piece of the continuously conveyed lead frame 3 as still images at a time. The control means 8 performs an inspection process on all the pieces while capturing, one by one via the CCD camera 6c, the still images of the pieces contained within the lead frame 3.;COPYRIGHT: (C)1998,JPO
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