Method of producing an optically effective arrange

专利名称：Method of producing an optically effective

arrangement, in particular for applicationwith a vehicular headlight

发明人：Ulrich Staiger,Joseph Strobel,Peter E. Castro申请号：US07/415228申请日：19890906公开号：US05065287A公开日：19911112

摘要：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 beilluminated with a desired light distribution by optimal utilization of the light source ofthe headlight. Therefore the optically effective surface of the headlight is characterizedby point asymmetry in substantially all planes cutting said reflecting surface. This can berealized by using a method for producing said optical surface comprising the steps of:mathematically representing said surface by creating a spline from bivariate tensorproduct of polynomials; deriving mathematical data in computer input format from saidmathematical representation; and inputting said data to a computer for controlling anapparatus by which the mathematical representation of said optical surface is reproducedin 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-splinemethod.

申请人：EASTMAN KODAK COMPANY

代理人：Norman Rushefsky

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