| 摘要 |
<p>Apparatus for the positional detection of objects in which a holographic image of the sample object is recorded on a photographic plate, which includes a laser source (40), a double convex lens (42) a collimating mirror (44), a holographic recording plate (46) and an object support (48). The lens (42) directs both the reference and signals onto the collimating mirror (44) and the object support (48) respectively. The signal beam by interference with the reference beam produces a three dimensional holographic image of the object on the recording plate (46).</p> |
