| 摘要 |
<p>The angle adjustment system uses a test body (16) with at least one test surface (14',14",14"') carrying a marking line (17,17',17") corresponding to the scanning line (15) with a marking (18, 18', 18") at a given point along its length. The scanner housing (11) is pivoted about one or two axes (x,y) to bring a marked point (20) along the scanning line into alignment with the test surface marking before pivoting the housing about a further axis (z) to bring the scanning line into alignment with the marking line. Pref. the marked point lies at the centre of the scanning line, the first two axes perpendicular to the scanning beam (12") being directed onto the marked point.</p> |
