Patent ID: 8002439

Claim:
A stage projector extending along a first axis and comprising: (a) a first optical system which has a first focus and is designed substantially to generate a light beam along the first axis and to concentrate the light beam in the first focus; (b) a second optical system downstream of the first focus and having a second focus, said second optical system comprising a first optical assembly and a second optical assembly, the second optical assembly being movable between an operative position in which the second optical assembly intercepts the light beam and the first axis between the first focus and the first optical assembly and a rest position in which the second optical assembly does not intercept the light beam and the first axis; wherein the first optical assembly is set at a position along the axis at which the second focus coincides with the first focus when the second optical system is in the rest position so as to provide the projector with a wash mode, and wherein the first optical assembly and the second optical assembly are translatable along the axis with respect to one another when the second optical assembly is in the operative position so as to provide the projector with a zoom mode wherein the first and second optical assemblies can be translated to cause the second focus to coincide with the first focus even with the first optical assembly at a position other than the set position.