targets cone angle 是怎么使用的？

cai004

哪位大哥 能和我说下
TFCalc targets cone angle是怎么使用的
谢谢

gds

  ~# f) G! |5 [+ a
6 m  w, P% f3 Y. K9 A  _$ r给你个官方的例子：


Broadband AR for a Cone of Light
Here we consider a coating on glass that reflects only 0.5% of a cone of light for a range of wavelengths from 420 to 680 nm. The cone axis is normal to the glass. The cone has an F-number of 0.778, which means the half-angle is 40 degrees. An uncoated glass surface reflects 4.4% of this cone of light. We use a feature new to version 3.5: cone-angle targets. As optimization targets we use
R < 0.5% for wavelengths 420, 425, 430,..., 680 and for a 40-degree cone
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% I) s$ f- l4 R! BIn TFCalc, these targets are easy to enter by using the "Generate Cone Targets" command on the Options menu of the "Targets - Cone Angle" window. We use TFCalc's needle/tunneling optimization to design the coating from "scratch". That is, we begin the design process with a single thin layer of TiO2 and allow TFCalc to increase the thickness and number of layers in the design. TFCalc finds a 6-layer design in a few minutes. The performance of this design is shown below. The little circles indicate the optimization targets.

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' p7 }; ~" S! r' G7 b2 p4 V Here is the design, starting with the layer closest to glass, and with thicknesses given in nm:
8 m) J" d8 R+ {  nTIO2          11.04
/ m0 z' d. c4 L) J* n3 A7 J- zSIO2          44.43
TIO2          34.99
SIO2          28.25
& z# S9 ]& M- G& K4 s. |* TTIO2          30.46
SIO2         104.92

280870377

多角度的？还是圆锥角啊？