| 摘要 |
The present invention relates to a device for adjusting the curvature of a mirror by applying bending moments to or releasing the same from both ends of the mirror. According to the present invention, the device for adjusting the curvature of a mirror comprises: a base block; a pair of rotating blocks which are connected to the base block by one or more elastic bodies, respectively, and rotate around the connection portions between the base block and the elastic bodies or elastically return to through the application or release of external forces; a pair of support blocks which are disposed at the pair of rotating blocks, respectively, to support both ends of the mirror and apply bending moments to the both ends of the mirror by the rotation of the pair of rotating blocks; and a driving part for rotating the pair of rotating blocks. The elastic bodies connect the rotating blocks to the base block in such a way that the support points of the support blocks of the mirror are movable in a direction opposite to the moving direction of the central point of the mirror by a change in curvature as the rotating blocks rotate. According to the present invention, the elastic bodies connecting the rotating blocks on which the support blocks are installed to the base block are provided in such a way that the supporting points of the support blocks of the mirror can move in a direction opposite to the moving direction of the central point of the mirror by a the change in curvature when the curvature of the mirror is adjusted. Therefore, the movement of the central point of the mirror by a change in curvature is canceled out by the movement of the supporting points placed at both ends of the mirror even if the curvature of the mirror is adjusted, and thus the absolute displacement of the central point of the mirror can be minimized. That is, the location of the central point of the mirror can be fixed when the curvature of the mirror is adjusted. In addition, since the driving part for rotating the pair of rotating blocks to adjust the curvature of the mirror comprises a pair of transmission parts and a transfer member to be driven by a single driver, the adjustment of the curvature of the mirror can be conveniently performed while adjusting the input with respect to only one driver, and thus the adjustment of the mirror can be easily and conveniently performed. Furthermore, the transfer force of the transfer member by the driver operator is applied to a pair of transmission blocks through a pair of elastic members, and thus the adjustment of the curvature of the mirror as well as the rotation angles of the rotating blocks may be performed very precisely compared to the displacement of the transfer member. |
