Method of producing an optically effective arrangement in particular for application with a vehicular headlight

Abstract

A vehicular headlight, in particular an automobile headlight, including a reflector (1) having a reflecting surface, is capable of illuminating a flat target surface to be illuminated with a desired light distribution by optimal utilization of the light source of the headlight. Therefore the optically effective surface of the headlight is characterized by point asymmetry in substantially all planes cutting said reflecting surface. This can be realized by using a method for producing said optical surface comprising the steps of: mathematically representing said surface by creating a spline from bivariate tensor product of polynomials; deriving mathematical data in computer input format from said mathematical representation; and inputting said data to a computer for controlling an apparatus by which the mathematical representation of said optical surface is reproduced in physical form. Such splines, in turn, are represented and subsequently altered, preferably either by the so-called Bezier method or by the so-called Basis-spline method.

Dependencies are inferred from the claim text.