Scanning monochromator system with direct coupled dispersing element-electromagnetic drive transducer assembly

A scanning monochromator system comprising a housing, structure in said housing defining an entrance aperture, structure in said housing defining an exit aperture, a radiation dispersing component in said housing arranged to disperse radiation passing through said entrance aperture into a spectrum for transmission towards said exit aperture, an electromagnetic drive transducer, said dispersing component being directly coupled to said electromagnetic drive transducer, and support structure for mounting the assembly of a rotary component of said drive transducer and said dispersing component for rotation as a unit about a stationary axis that is perpendicular to the optical axis of the system so that a selected portion of the radiation dispersed by said dispersing component is passed through said exit aperture, said support structure including first adjustment means for rotating said assembly about its axis of rotation, and a second adjustment means for tilting said assembly about a fixed pivot offset from the assembly axis, said drive transducer being adapted to move said selected portion of dispersed radiation at said exit aperture over a wavelength range of at least 3000 angstroms.