OPTIMIZATION METHOD FOR GROOVE ANGLE OF FRESNEL LENS AND FABRICATION METHOD FOR FRESNEL LENS AND FRESNEL LENS USING THE SAME

摘要

PURPOSE: A method for optimizing the groove angle of a Fresnel lens, a method for manufacturing the Fresnel lens using the same, and the Fresnel lens are provided to improve the light distribution property of the Fresnel lens. CONSTITUTION: At least two values of optical state quantity with respect to a groove angle are obtained. Recursive functions with respect to the two values are deducted. A weighting factor is applied to the recursive functions. Target function with the recursive functions, to which the weighing factor is applied, as a variable is deducted. The optical groove angle is obtained from the target function.