| 摘要 |
<p>The measurement herein determines the depth of an inclusion (12) in a solid media (2) such as fused silica. A trigonometric function such as the tangent calculates the depth of the inclusion (12). A light source having a primary incident beam (6) of light enters a solid media (2) on a straight line path at an angle (8) to a horizontal axis and secondary scattered light (16) is detected at an angle to the horizontal axis. Preferably, the detector (4) is positioned on a perpendicular axis above the inclusion (10) and the angle (8) of primary beam (6) to the horizontal axis is 45 degrees. The solid media (2) has an exterior surface parallel to the horizontal axis and the primary beam of light (6) and the perpendicular axis intersect the exterior surface. As a result, the perpendicular axis intersect is equidistant from the primary beam (6) intersect and the inclusion (10). The scattered light can be viewed from many directions with varying intensities.</p> |
