| 摘要 |
An optical system for inspecting a 360 DEG annular section of a housing interior. The optical system includes a telescope whose objective lens end is axially aligned and slidably affixed to a hollow cylindrical extension tube, a hollow cylindrical bellows has one end fixedly attached to the objective lens end and the other end slidably attached to the housing so that it is axially aligned with the extension tube and the housing, a light transmitting means extends longitudinally through said extension tube and bellows so that its output end protrudes into the housing interior, a 360 DEG reflecting means is axially disposed adjacent to the light means output end, a 360 DEG viewing means is axially positioned adjacent to the reflecting means so that the viewing means field of view coincides with the reflecting means field of illumination, a light source is directed into the input end of a fiber optic light pipe for illuminating a 360 DEG area of the housing interior so that the latter may be viewed by focusing the telescope on an image formed by the viewing means reflecting surface, and the entire interior surface visually scanned by longitudinally moving the housing relative to the viewing means.
|
