| 摘要 |
<p>An observation arrangement is applicable to an image lying horizontally, esp. the screen of a radar set, so that an observer of a ship's radar can observe simultaneously ahead of the ship and the radar presentation. A double mirror system (3, 4) arranged above the screen (2) enables the observer to view a vertical image. The system may consist of a first plane mirror (3) parallel to the screen (2) and a second plane mirror set at an angle of about 135 deg..</p> |
