| 摘要 |
PROBLEM TO BE SOLVED: To provide a strainless mirror having excellent performance by allowing a change of a mirror surface into a plane mirror, a concave mirror or a convex mirror by operating the mirror surface in a noncontact state.SOLUTION: A mirror includes a mirror body wherein a mirror surface sheet 1 and a rear sheet 4 each having a curvature capable of being changed are held in a peripheral part 3 at an interval and wherein a portion between both the sheets is brought into an airtight state. A means capable of changing a curvature of a mirror surface by operating a pressure of the airtight state of the mirror body in noncontact with the mirror surface sheet 1 is installed to the rear sheet 4. |
