Additional device for slide-projector i.e. projection wall

摘要

The additional device (14) comprises a transparent projection wall (16) it includes a light proof screen jacket (18) which is made of a flexible, foldable material. The screen jacket has an opening edge (20) which is connected to the projection wall. On its second opening edge (22) there is a fastening device (24) which is spaced from the first opening edge. The fastener device is light proof for temporary securing of the screen jacket to the slide projector.