Apparatus for producing electron microscope and diffraction images separately and simultaneously on the image plane

Claim 1

IN AN ELECTRON MICROSCOPE OF THE TYPE PROVIDED WITH AT LEAST A SOURCE OF ELECTRONS, AN ANODE, A CONDENSER LENS, MEANS FOR SUPPORTING A SAMPLE, AN OBJECTIVE LENS, A FIELD LIMITING APERTURE, AN INTERMEDIATE LENS, AND A FLUORESCENT SCREEN DISPOSED IN THE ORDER NAMED, AND A FLUORESCENT WHICH COMPRISE, IN COMBINATION, FIRST MEANS TO FORM ALTERNATELY A MICROSCOPE IMAGE AND A DIFRACTION TO FORM ALVARYING PERIODICALLY THE FOCAL LENGTH OF SAID INTERMEDIATE LENS, AND SECOND MEANS TO CAUSE ONLY THE DEFLECTION OF AN IMAGE FORMING ELECTRON BEAM OF SAID MICROSCOPE IMAGE AT THE IMAGE SIDE OF SAID INTERMEDIATE LENS IN SYNCHRONISM WITH THE PERIODIC VARIATION OF SAID FOCAL LENGTH, THEREBY PRODUCING SEPARATELY AND SIMULTANEOUSLY SAID MICROSCOPE IMAGE AND DIFFRACTION IMAGE ON SAID FLUORESCENT SCREEN WITHIN THE SAME VISUAL FIELD.