Filter module for illumination instrument with hollow section and optic elements which in the hollow section are respectively rotationally about rotational axis vertical

摘要

The drive is coupled with the optical elements (21 to 27) in such a way, that the adjacent optical elements rotate in opposed directions. The axes (41 to 47) of the optical elements run radially to the longitudinal axis (3). The number of optical elements is odd, and the axes of rotation lie in different planes, vertical to the longitudinal axis (3) of the hollow section.