Adjusting screen auxiliary device has adjusting elements, which are diagonally mergeable in intersection and are connected to support element in such way that optical element is disposed on point of intersection

摘要

The adjusting screen auxiliary device has an optical element (1) and a support element (2), where the support element is placed on a screen. A positioning unit is provided for positioning in the middle of the screen, and comprises two variable-length adjusting elements (8a,8b), which each has two end portions (9a). The adjusting elements are diagonally mergeable in an intersection and are connected to the support element in such a way that the optical element is disposed on the point of intersection.