Displacement device, in particular for projectors

摘要

A displacement device for realizing high-precision displacement, in particular for reduction projectors, includes a housing, a movable element which can move relative to the housing, and a moveable drum. The drum is enveloped by flexible elements, with first ends of the flexible elements fixedly attached to the housing and the respective other ends of the flexible elements attached to the movable element on the diametrically opposite side of the drum, whereby the flexible elements are pretensioned.