| 摘要 |
<p>Back projection unit for slides comprises a light source (4) projecting through the slide (6) and lens (7) onto a mirror (8) and then to the screen (12). The inclined screen (12) is mounted in one wall (10) of the unit. This wall (10) is hinged (9) to the main projection unit (1). The screen wall (10, 11, 12) is extended the length of a third wall (13) and the unit stands on a foot (15) at the bottom of the screen.</p> |
