| 摘要 |
<p>An imaging instrument for observing a magnified object, which enables the selection or control of illuminating beams of light classified as sideway incident, downward incident, and transmitted beams as well as of throwing directions of beams. The instrument is provided with a condensing guide at the tip thereof for controlling illuminating beams of light from light source means and throwing light on an object to be observed. By the selective use of light source means provided in a plurality of systems, kinds and throwing directions of beams of light projected through the condensing guide are selected or controlled.</p> |
