| 摘要 |
A placido device (10) includes a single-curvature, semi-circular screen (12) having an opaque covering which is interrupted along its surface to form an illuminated pattern. A flat top (14) is attached to the top of the screen (12) and angled from the screen front (28) towards the screen bottom (26). Also, a flat bottom (16) is attached to the bottom of the screen (12) and angled from the screen front (28) towards the screen top (24). |
