| 摘要 |
A Venetian blind includes upper and lower slats units whose tilting angles are independently and respectively controlled by first and second angle adjusting mechanisms. The first angle adjusting mechanism includes a first shaft journalled in a headrail, two pairs of first ladder cords secured to the first shaft and abutting against longitudinal sides of each of the upper slats, and a plurality of slat-supporting cords disposed respectively under the upper slats and extending between the first ladder cords. The second angle adjusting mechanism includes a second shaft journalled in the headrail, two pairs of second ladder cords secured to the second shaft and abutting against longitudinal sides of each of the lower slats, and a plurality of slat-supporting cords disposed respectively under the lower slats and extending between the second ladder cords.
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