| 摘要 |
A three-dimensional ornamental device adapted for rotation about an axis to produce a changing perspective that creates an interesting visual effect includes a series of angularly spaced apart strips, each strip having opposite ends and a length corresponding to the curvilinear distance along the strip between the opposite ends of the strip, wherein each strip is connected at one end to a first spine and connected at an opposite end to a second spine. The device can be made by cutting a sheet of material into a desired geometric shape, making cuts into the sheet material to form a series of disconnected adjacent strips, and bending the strips from a reference plane so that the strips are angularly spaced apart from each other.
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