Patent ID: 8712736
Filing Date: 2014-04-29
Classification: B64G,G02B,Y10T

Abstract:
1. A design method, comprising: a step of dividing a solar wavelength range into a predetermined m of first to mth wavelength regions, wherein m is an integer of one or larger, a first step of applying a multilayer film designing method to the first wavelength region to design a first stack portion formed of a multilayer film, said multilayer film designing method comprising; if m is 2 or larger, further performing a second step to an mth step by repeating kth step from k=2 to k=m, wherein k is an integer from two to m, the kth step being a step of designing a multilayer structure, in which a kth stack portion formed of a multilayer film is placed on a structure including the first stack portion to a (k−1)th stack portion stacked sequentially, by applying the design method to a wavelength region including the first to kth wavelength regions to design the kth stack portion to be placed on the (k−1)th stack portion, on the condition that a layer structure of the first to (k−1)th stack portions is not changed.