PROJECTION OPTICS WITH ADJUSTABLE REFRACTIVE POWER AND METHOD FOR ADJUSTING THE REFRACTIVE POWER THEREOF

摘要

The invention relates to optics comprising adjustable optical elements (1f1, 1f2) and possibly fixed focal length lenses (105f1, 105f2). The optics properties are advantageously modifiable with the aid of a corresponding control device for adjustable optical elements. For this purpose, systems in the form of a stereo-operational microscope, objective, ocular or zoom (57f) are used. The inventive zoomable projection optics comprises variable refringence lenses (1f1) and (1f2) which are oppositely controlled with respect to a projection scale by the control device in such a way that the refractive power of the 1f1 lens is increasable and the refractive power of the 1f2 lens is decreasable. Said projection optics can also comprise other fixed focal length components (105f1, 105f2).