| 摘要 |
<p>An optical system is effective to illuminate and scan an interior wall (6) of an object (1) having an interior bore, such as a stent. The system includes a light source (15), an object support (5) having a light conducting portion (7), an image taking lens (6), and a line scan camera (8). The interior bore and the light conducting portion (7) of the object support (5) are in axial alignment with a center optical axis of the image taking lens (6). A drive mechanism (12) engages the object (1) without impacting the axial alignment. Various aspect of this optical system include a rotating wheel or transparent plate as the drive mechanism. The object support (5) may be an opaque rod having a light conducting portion (7) or a transparent rod. Electronics associated with this optical system include a rotary encoder engaging the drive system (12) to drive an electric circuit capable of triggering the line scan camera (8) in response to rotation of the object (1), thereby building a line by line image of the interior bore and the line scan camera (8) connected to a computer-based imaging system effective to identify cosmetic and functional manufacturing defects.</p> |
