| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mirror in which a plane mirror and a concave mirror can be easily changed using a film mirror sheet with a small and simple structure. <P>SOLUTION: The mirror includes: a circular film mirror sheet 1 which can change curvature; a frame-like holder ring 2; and a peripheral edge is equipped with marginal part which has a cross-sectional curvature shape, a knob 3 in the center and engages to the holder ring 2, and includes a back board 4 equipped with a snap action mechanism. While elongating the peripheral edge of the film mirror sheet 1 to circumferential direction, engaging a holder ring 2 with an edge part and holding and fixing it with a frame-like hold ring 5, and a space S sealed between the film mirror seat 1 and a back board 4 is formed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
