Freely the form of fresnel surface, a method for producing a freely the form of fresnel surface and method for producing a construction data set

摘要

It is a method for producing a freely the form of fresnel surface with a number of in each case a fresnel segment surface (10) and a trailing edge (28) fresnel having facets (12) is made available. In the process, the production of the free the form of fresnel surface by means of cutting machining of a starting body, on the basis of design data for the freely the form of fresnel surface. Due to the the aid of the cylindrical outer surfaces and / or conical surfaces, for the production of the construction data, it is achieved that the projection of the edges of the fresnel facets on the x - y - plane represent circular paths.