Aspheric convex mirror quality-control arrangement and its application to the control of a convex telescope mirror

摘要

1. Aspheric convex mirror optical quality-control arrangement operating by studying the real image provided by an optical system comprising the convex mirror (1) to be checked and an auxiliary concave mirror (2), according to a method of autocollimation on the convex mirror, the auxiliary concave mirror being a mirror preferably without zonal defects in order to obtain the most exact measurement possible, whereof the meridian is in the shape of a sphere or a parabola or an intermediate shape and whereof the numerical opening is less than or equal to 0.25.