Lens generating method

Claim 1

THE METHOD OF GENERATING SURFACES OF REVOLUTION HAVING UTILITY AS OPTICAL LENSES AND MIRRORS, COMPRISING MOUNTING A WORK BLANK FOR ROTATION ABOUT A WORK AXIS, ROTATING SAID BLANK ABOUT SAID WORK AXIS, PROVIDING A TOOL HAVING A GENERALLY PLANAR AND GENERALLY CIRCULAR MATERIAL-REMOVING EDGE, ROTATING SAID TOOL ABOUT A TOOL AXIS PERPENDICULAR TO THE PALNE OF SAID TOOL CIRCULT EDGE AND CONCENTRIC THEREWITH, MOUNTING SAID TOOL FOR MOVEMENT ABOUT A GENERATOR AXIS AT AN ANGLE TO SAID WORK AXIS, SAID WORK AND GENERATOR AXIS DETERMINING A PLANE PASSING THROUGH A PRINCIPAL SECTION OF THE SURFACE OF REVOLUTION GENERATED, SAID TOOL BEING AT A DISTANCE FROM SAID GENERATOR AXIS DEFINED AS A DISPLACEMENT RADIUS OF A LENGTH MEASURED PERPENDICULAR TO SAID GENERATOR AXIS TO THE CENTER OF SAID TOOL CIRCULAR EDGE, A DISPLACEMENT PLANE IS DEFINED BY SAID DISPLACEMENT RADIUS AND SAID GENERATOR AXIS, THE INCLINATION IS THE ANGLE BETWEEN SAID DISPLACEMENT PLANE AND THE PLANE OF SAID TOOL CIRCUIT EDGE, THE AZIMUTH IS THE ANGLE MEASURED IN SAID DISPLACEMENT PLANE BETWEEN SAID GENERATOR AXIS AND THE LINE OF INTERSECTION BETWEEN SAID DISPLACEMENT PLANE AND SAID PLANE OF SAID TOOL CIRCULAR EDGE, ADJUSTING SAID INCLINATION AND SAID AZIMUTH, AND MOVING SAID TOOL AT SAID DISPLACEMENT RADIUS ABOUT SAID GENERATOR AXIS TO AT LEAST PENETRATE SAID PRINCIPAL SECTION WHILE ROTATING SAID WORK BLANK AND SAID TOOL ABOUT THEIR RESPECTIVE AXES, WHEREBY THE SAID METHOD IS EFFECTIVE FOR GENERATION OF SURFACES OF PROLATE AND OBLATE ELLIPSOIDS, AND SPHERES AND OTHER SURFACES RESEMBLING PRO-

Claim 2

THE METHOD OF GENERATING SURFACES OF REVOLUTION HAVING UTILITY AS OPTICAL LENSES AND MIRRORS, COMPRISING MOUNTING A WORK BLANK FOR ROTATION ABOUT A WORK AXIS, ROTATING SAID BLANK ABOUT SAID WORK AXIS, PROVIDING A TOOL HAVING A GENERALLY PLANAR AND GENERALLY CIRCULAR MATERIAL-REMOVING EDGE, ROTATING SAID TOOL ABOUT A TOOL AXIS PERPENDICULAR TO THE PALNE OF SAID TOOL CIRCULT EDGE AND CONCENTRIC THEREWITH, MOUNTING SAID TOOL FOR MOVEMENT ABOUT A GENERATOR AXIS AT AN ANGLE TO SAID WORK AXIS, SAID WORK AND GENERATOR AXIS DETERMINING A PLANE PASSING THROUGH A PRINCIPAL SECTION OF THE SURFACE OF REVOLUTION GENERATED, SAID TOOL BEING AT A DISTANCE FROM SAID GENERATOR AXIS DEFINED AS A DISPLACEMENT RADIUS OF A LENGTH MEASURED PERPENDICULAR TO SAID GENERATOR AXIS TO THE CENTER OF SAID TOOL CIRCULAR EDGE, A DISPLACEMENT PLANE IS DEFINED BY SAID DISPLACEMENT RADIUS AND SAID GENERATOR AXIS, THE INCLINATION IS THE ANGLE BETWEEN SAID DISPLACEMENT PLANE AND THE PLANE OF SAID TOOL CIRCUIT EDGE, THE AZIMUTH IS THE ANGLE MEASURED IN SAID DISPLACEMENT PLANE BETWEEN SAID GENERATOR AXIS AND THE LINE OF INTERSECTION BETWEEN SAID DISPLACEMENT PLANE AND SAID PLANE OF SAID TOOL CIRCULAR EDGE, ADJUSTING SAID INCLINATION AND SAID AZIMUTH, AND MOVING SAID TOOL AT SAID DISPLACEMENT RADIUS ABOUT SAID GENERATOR AXIS TO AT LEAST PENETRATE SAID PRINCIPAL SECTION WHILE ROTATING SAID WORK BLANK AND SAID TOOL ABOUT THEIR RESPECTIVE AXES, WHEREBY THE SAID METHOD IS EFFECTIVE FOR GENERATION OF SURFACES OF PROLATE AND OBLATE ELLIPSOIDS, AND SPHERES AND OTHER SURFACES RESEMBLING PRO-