| 摘要 |
<p>The viewer has a panel (1) above a light source (7) and has an optical condenser (12) fixed on it and flush with it. An objective (13) is mounted on a support (3), above the panel. The support has a screen for a projection passing through the objective of a transparency on the panel, lit from below. The support is box shaped with one open side face. The opposite face has a sloping screen for the image and an inclined mirror near the upper face. The light (7) is on a drawer (6) sliding below the panel.</p> |
