Slide dissolve (change-over, fade) projection method with one projector having one objective or without objective with two parallel drive shafts as well as two special slide magazines

摘要

According to the present state of the art, either at least two projectors having one objective each or one projector with two objectives with in each case one slide magazine are required for slide shows with dissolve effects. In the case of the invention, only one projector having one objective and two special slide magazines is instead required in most cases. The solution is, that the projector having one objective contains two parallel drive shafts (1) with mutually offset slide grippers (2) and dissolve-effect screens (3) as well as special slide magazines (4) outside the drive shafts (1) in the slide-gripper area and that the slide grippers (2) grip the slides at the lower section of the front edge (5 and 6) of the mounts. The offset between slide grippers (2) and special slide magazines (4), and the slide catch (5 and 6) have the result that the slides are located congruently in the slide stage (7). The slide grippers with slides (5 and 7) and the dissolve-effect screens (3) can be moved for the purpose of any desired dissolve effects by the drive shaft control (1). This solution, namely, to present slide shows with dissolve effects only with one projector having one objective and two special slide magazines, results in savings in terms of projectors, accessories, and work and considerable reductions in costs, which in itself may cause this popular hobby to spread even further. <IMAGE>