| 摘要 |
An optical scanning apparatus includes a light source for directing light energy through an object scanning zone toward and to a photo responsive array having a plurality of linearly arranged photo detectors that provide an electrical output in response to light energy thereon. The electrical output of the photo responsive array is representative of the exterior dimensions of the scanned object. The light source is mounted in a scanning head that is rotated about the object and advanced relative to the length of the object to enable scanning of the entire peripheral surface of the object. The invention is suitable for scanning the peripheral surface of both an object having a discrete axial length as well as an object having an indeterminate length.
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