| 摘要 |
An absorber tube (11) is positioned on the focal line (10) of the reflector (3) which is shaped like a curved parabolic cylinder. The reflector is aligned and supported by a holder (6). The reflector has at least two flaps (13,14) which fold up together in a non-operating position when the inner s ides (20,21) of the folded-up flaps are next to the absorber tube, and of which each is swivel- mounted on the holder. One end of an adjustment (22) is joined to each flap, and the other end to the holder which has a snap-in catch (32) near the swivel bearing (16) of each flap. |
