METHOD FOR ESTIMATING THE DEGREE OF MOLDING DIFFICULTY OF ASPHERICAL GLASS MOLD LENS AND METHOD FOR DESIGNING LENS SYSTEM INCLUDING ASPHERICAL GLASS MOLD LENS

摘要

(Problem) A method of predicting the degree of molding difficulty of an aspherical MO lens in which the conventional clue does not exist is predicted, and a method of predicting the degree of molding difficulty, which leads to a change in the design shape itself of the aspherical MO lens, is demanded. [MEANS FOR SOLVING PROBLEMS] A method for predicting a forming difficulty of an aspheric glass mold lens having a rotationally symmetric aspherical surface represented by an aspherical surface expression of at least one of an R1 surface and an R2 surface, The slope of the R1 surface and the R2 surface is calculated by differentiating the aspherical formulas of the R1 surface and the R2 surface by one time, and based on the formula of the slope ratio obtained by dividing either the slope of the R1 surface or the slope of the R2 surface into the other A method of predicting the degree of molding difficulty of an aspherical glass mold lens for determining the degree of molding difficulty.