Generalized polarized tabulated interface law

Description

../../../_images/poltabulated.jpg

Specular material with a glass bulk medium and a polarized tabulated law built from dark reflective coating data

Interface law The Generalized Polarized Tabulated interface law allows giving 3 times 16 tabulated spectral values for reflection (32) and transmission (16) coefficients, for incidence angles between 0° and 90°. The given coefficients correspond to the measurements of Mueller Matrices for reflection and transmission. If you only have unpolarized values, use the unpolarized version instead.

The provided data consists in 48 angle variable spectra:

  • er00 : External reflection, first component of Mueller Matrix

  • er01 : External reflection, second component of Mueller Matrix

  • er33 : External reflection, last component of Mueller Matrix

  • ir00 : Internal reflection, first component of Mueller Matrix

  • ir01 : Internal reflection, second component of Mueller Matrix

  • ir33 : Internal reflection, last component of Mueller Matrix

  • t00 : Transmission, first component of Mueller Matrix

  • t01 : Transmission, second component of Mueller Matrix

  • t33 : Transmission, last component of Mueller Matrix

External reflections correspond to rays coming from the front side of the geometry (side the normal is oriented to). Internal reflections correspond to the back side (opposed to surface normal). The transmission coefficient is symmetric.

Note

Using this feature requires an Advanced Edition license

Children Nodes

Angle variable spectrum er00

first component of Mueller Matrix of external reflection for multiple angles

Angle variable spectrum er01

second component of Mueller Matrix of external reflection for multiple angles

Angle variable spectrum ir00

first component of Mueller Matrix of internal reflection for multiple angles

Angle variable spectrum ir01

second component of Mueller Matrix of internal reflection for multiple angles

Angle variable spectrum t00

first component of Mueller Matrix of transmission for multiple angles

Angle variable spectrum t01

second component of Mueller Matrix of transmission for multiple angles

Parameters

none

Ocean XML 6.1 example

The following example was truncated:

<intlaw      type="poltabulated"     name="intlaw">
     <avspectrum     name="er00"     numwl="11"      scale="cos">
             3.80E-07        4.20E-07        4.60E-07        5.00E-07        [...]
             0       1               1               1               1               [...]
             0.125   1               0.999           0.999           0.999           [...]
             0.25    0.997           0.996           0.996           0.994           [...]
             [...]
     </avspectrum>
     [...]
     <avspectrum     name="ir00"     numwl="11"      scale="cos">
             3.80E-07        4.20E-07        4.60E-07        5.00E-07        [...]
             0       1               1               1               1               [...]
             0.125   1               0.999           0.999           0.999           [...]
             0.25    0.997           0.996           0.996           0.994           [...]
             [...]
     </avspectrum>
     [...]
     <avspectrum     name="t00"      numwl="11"      scale="cos">
             3.80E-07        4.20E-07        4.60E-07        5.00E-07        [...]
             0       0               0               0               0               [...]
             0.125   0               0.001           0.001           0.001           [...]
             0.25    0.003           0.004           0.004           0.006           [...]
             [...]
     </avspectrum>
     [...]
</intlaw>