CAMERA SUBASSEMBLY DUST AND DEFECT DETECTION SYSTEM AND METHOD

摘要

A high resolution image of a CCD camera subassembly is examined to determine whether dust is present inside the subassembly. By examining the size, number, and location of the dust particles it can be determined whether the dust is likely to cause issues when the camera subassembly is integrated into a fully assembled document scanner. Other contaminants and defects, such as scratches on the glass covering, can also be detected. This method can be used as the acceptance criteria of individual camera subassemblies from the manufacturer.

主权项

1. A system for inspecting a camera subassembly for an anomaly that could affect image quality, the system comprising:
a) a fixture for holding a camera subassembly to be inspected for the anomaly; b) a high resolution camera held by the fixture configured to capture high resolution images of the camera subassembly; c) a control circuit board configured to provide power to control illumination elements during the inspection process; d) an inspection control device connected to the high resolution camera, wherein the inspection control device comprises a processor and memory; wherein the processor in the inspection control device executes software modules stored in the memory to control the high resolution camera, to capture images of the camera subassembly taken by the high resolution camera, and to perform analysis on the captured images for the presence of the anomaly.