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Optical constants of Poly(methyl methacrylate) (PMMA, Acrylic glass)

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Optical constants of Poly(methyl methacrylate) (PMMA, Acrylic glass)
Wavelength: µm  (0.4358~1.052)
Refractive index

Refractive index - Wikipedia

n = 1.4914

Chromatic dispersion

Dispersion (optics) - Wikipedia

dn/dλ = -0.0575 µm-1

Abbe numbers

Abbe number - Wikipedia

Vd = 52.60

Ve = 53.85

Formulae    Abbe diagram

[ Figure: Refractive index of Poly(methyl methacrylate) (PMMA, Acrylic glass) ]
Dispersion formula
$$ n^2 =2.399964 - 8.308636\text{×}10^{-2} λ^2 - 1.919569\text{×}10^{-1} λ^{-2} + 8.720608\text{×}10^{-2} λ^{-4} - 1.666411\text{×}10^{-2} λ^{-6} + 1.169519\text{×}10^{-3} λ^{-8} $$

C

n = sqrt( 2.399964 - 8.308636E-2*pow(x,2) - 1.919569E-1*pow(x,-2) + 8.720608E-2*pow(x,-4) - 1.666411E-2*pow(x,-6) + 1.169519E-3*pow(x,-8) )

Fortran

n = SQRT( 2.399964 - 8.308636E-2*x**2 - 1.919569E-1*x**(-2) + 8.720608E-2*x**(-4) - 1.666411E-2*x**(-6) + 1.169519E-3*x**(-8) )

Visual Basic

n = SQRT( 2.399964 - 8.308636E-2*x**2 - 1.919569E-1*x**(-2) + 8.720608E-2*x**(-4) - 1.666411E-2*x**(-6) + 1.169519E-3*x**(-8) )

Expressions for n

Conditions

20 °C

References

- S. N. Kasarova et al. Analysis of the dispersion of optical plastic materials, Optical Materials 29, 1481-1490 (2007) doi:10.1016/j.optmat.2006.07.010

Reflection calculator
Angle of incidence (0~90°): 
Direction: in out
Reflectance (at 0.5876 µm)

Fresnel equations - Wikipedia

RS = ... (S-polarized)
RP = ... (P-polarized)
R = ... (non-polarized, (RS+RP)/2 )

Reflection phase

ɸ = ...°
ɸS = ...°
ɸP = ...°

Brewster's angle

Brewster's angle - Wikipedia

θB = ...°

Critical angle

Total internal reflection - Wikipedia

θC = ...°

More info ( wiki )

Poly(methyl methacrylate), (C5O2H8)n

Other names

  • Poly(methyl methacrylate)
  • PMMA
  • Acrylic glass

Trademarks

Plexiglas, Vitroflex, Limacryl, R-Cast, Per-Clax, Perspex, Plazcryl, Acrylex, Acrylite, Acrylplast, Altuglas, Polycast, Oroglass, Lucite

External links

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