RefractiveIndex.INFO
Refractive index database
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Wavelength: µm   (0.4358~1.052)
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Refractive index and related constants - Poly(methyl methacrylate) (PMMA, Acrylic glass)
Refractive index at 0.5876 µm

Refractive index - Wikipedia

n = 1.4914

dn/dλ at 0.5876 µm

dn/dλ = -0.0575 µm-1

Abbe numbers

Abbe number - Wikipedia

Vd = 52.60

Ve = 53.85

Formulae    Abbe diagram
Chromatic dispersion curve

Dispersion (optics) - Wikipedia

[ Figure: Refractive index of $plain_material_name ]
Dispersion formula

n2 = C1 + C2λ2 + C3λ-2 + C4λ-4 + C5λ-6 + C6λ-8

C1 = 2.399964; C2 = -8.308636E-2; C3 = -1.919569E-1; C4 = 8.720608E-2; C5 = -1.666411E-2; C6 = 1.169519E-3

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 = SQR( 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

Reflection and related optical constants - Poly(methyl methacrylate) (PMMA, Acrylic glass)

Angle of incidence (0~90°): 

Direction: in out

Conditions

20 °C

Source of refractive index data

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]

Comments

Molecular formula: (C5O2H9)n. Trademarks: Plexiglas, Vitroflex, Limacryl, R-Cast, Per-Clax, Perspex, Plazcryl, Acrylex, Acrylite, Acrylplast, Altuglas, Polycast, Oroglass, Lucite.

Links

Acrylic glass - Wikipedia