A collection of refractive-index spectra for some materials.
Details
The "generic_mspct" object contains "generic_spct"
objects with refractive index data.
The variables in each member spectrum are as follows:
w.length (nm)
n
k
Note
Data labeled "for unrestricted use" originate from the Filmmetrics
Refractive Index Database at
https://www.filmetrics.com/refractive-index-database where
primary sources are provided. The names in refractive_index.mspct
are the same as in the downloaded files, except for the `.txt` tag.
Examples
length(refractive_index.mspct)
#> [1] 17
names(refractive_index.mspct)
#> [1] "Ag" "air" "Al" "Au" "Cr" "Cu" "Ge" "NBAF10"
#> [9] "NBK7" "Ni" "PC" "PET" "PMMA" "PS" "PVC" "Ti"
#> [17] "water"
refractive_index.mspct$PMMA # acrylic or Plexiglas
#> Object: generic_spct [101 x 2]
#> Wavelength range 436.8-1052 nm, step 6-7 nm
#> Label: Refractive index (n) for PMMA
#> Variables:
#>
#> --
#> # A tibble: 101 × 2
#> w.length n
#> <dbl> <dbl>
#> 1 437. 1.50
#> 2 443 1.50
#> 3 449. 1.50
#> 4 455. 1.50
#> 5 461. 1.50
#> 6 468. 1.50
#> 7 474. 1.50
#> 8 480. 1.50
#> 9 486 1.50
#> 10 492. 1.50
#> # ℹ 91 more rows
refractive_index.mspct[["PMMA"]]
#> Object: generic_spct [101 x 2]
#> Wavelength range 436.8-1052 nm, step 6-7 nm
#> Label: Refractive index (n) for PMMA
#> Variables:
#>
#> --
#> # A tibble: 101 × 2
#> w.length n
#> <dbl> <dbl>
#> 1 437. 1.50
#> 2 443 1.50
#> 3 449. 1.50
#> 4 455. 1.50
#> 5 461. 1.50
#> 6 468. 1.50
#> 7 474. 1.50
#> 8 480. 1.50
#> 9 486 1.50
#> 10 492. 1.50
#> # ℹ 91 more rows
# Compute spectral reflectance for an interface between acrylic and air
# incidence angle of colimated light 60 degrees away from the normal.
Rfr_from_n(angle_deg = 60, n = refractive_index.mspct[["PMMA"]])
#> Object: reflector_spct [101 x 2]
#> Wavelength range 436.8-1052 nm, step 6-7 nm
#> Variables:
#> w.length: Wavelength [nm]
#> Rfr: Total spectral reflectance [/1]
#> --
#> # A tibble: 101 × 2
#> w.length Rfr
#> <dbl> <dbl>
#> 1 437. 0.0895
#> 2 443 0.0894
#> 3 449. 0.0893
#> 4 455. 0.0892
#> 5 461. 0.0891
#> 6 468. 0.0890
#> 7 474. 0.0889
#> 8 480. 0.0888
#> 9 486 0.0887
#> 10 492. 0.0886
#> # ℹ 91 more rows