| 摘要 |
A reflection device including a sheet made of a flexible material with at least one surface having reflective properties including a first edge and a second edge on opposite sides of a center line of the sheet where the first edge and the second edge of the sheet are shaped such that the flexible material is formed into a mostly parabolic shape in cross section when bent about a line perpendicular to the center line and the sheet is secured at two points along the center line.
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