[ATM] Fabricating a Grating of Sinusoidal Intensity

[Vladimir Galogaza]

Shigemi,

>0.0 (100% intensity)
>to 1.9 (0% intensity)? If tabulated, is the following correct?

>Gray Scale    Sinusoidal intensity
>0 (white)   100% intensity
>0.5            75%
>0.95          50%
>1.45          25%
>1.9(black)   0%

If "Gray scale" is optical density or absorbance defined as
A=-log(I/Io)  (log base 10), where Io is input intensity and
I is output intensity, than relation between output intensity and
absorbance gives this table:

Optical density          intensity                  intensity
(absorbance)          as % of input int.    on 0-255 scale
0                       100                                  255
0.5                      31.5                                 80
0.95                    11.3                                 29
1.45                      3.2                                   8
1.9                        1.26                                 3

I am not sure what you meant by "sinusoidal" intensity. know. Anyway, 
perhaps this helps.
Regards
Vladimir.