| 摘要 |
<p>The anti-dazzle light screen has a high efficiency, and comprises two sets of components of paraboloid profile at right angles to each other. Those in the first set consist of folded blades mounted parallel to each other (1), the section of each blade being V-shaped, with each arm of paraboloid shape, concave towards the outside (3, 4). There are slots in the blades (6), in line with which are apertures (10). Truncated V -section cut-out portions (8) are formed in the components of the second set (2), on the sides of which there are formed lugs (9). The components of the second set are formed by profiled sections in the shape of a Fresnel lens, the lugs being situated at the upper ends of the cut-out portion. The apertures are slots opposite those in the folded blades.</p> |
