| 摘要 |
PROBLEM TO BE SOLVED: To form a highly accurate mirror form and to provide a simplified cable network configuration. SOLUTION: On a truss body structure 10, which can be freely folded and expanded, radially framing and coupling six four-side links 15 around a central longitudinal member 11, a conductive mesh 18 is spread through a cable network 19 and a supporting pole 17. At the same time, a plurality of radial ribs 20 are located at prescribed intervals around the central longitudinal member 11, the base end thereof is attached to the central longitudinal member 11 so as to be freely turned and in the state of expanding the truss body structure 10, the radial ribs 20 are buckled and deformed to be set to a desired curve.
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