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Refractive index database

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Refractive index and related constants - BK7
Refractive index at 0.5876 µm

Refractive index - Wikipedia

n = 1.5168

dn/dλ at 0.5876 µm

dn/dλ = -0.0418 µm-1

Abbe numbers

Abbe number - Wikipedia

Vd = 64.17

Ve = 63.96

Formulae    Abbe diagram
Chromatic dispersion curve

Dispersion (optics) - Wikipedia

[ Figure: Refractive index of BK7 ]
Dispersion formula

Sellmeier equation - Wikipedia

n2 - 1 = C1λ2/(λ2-C2) + C3λ2/(λ2-C4) + C5λ2/(λ2-C6)

C1 = 1.03961212; C2 = 0.00600069867; C3 = 0.231792344; C4 = 0.0200179144; C5 = 1.01046945; C6 = 103.560653

C

n = sqrt( 1 + 1.03961212*pow(x,2)/(pow(x,2)-0.00600069867) + 0.231792344*pow(x,2)/(pow(x,2)-0.0200179144) + 1.01046945*pow(x,2)/(pow(x,2)-103.560653) );

Fortran

n = SQRT( 1 + 1.03961212*x**2/(x**2-0.00600069867) + 0.231792344*x**2/(x**2-0.0200179144) + 1.01046945*x**2/(x**2-103.560653) )

Visual Basic

n = SQR( 1 + 1.03961212*x^2/(x^2-0.00600069867) + 0.231792344*x^2/(x^2-0.0200179144) + 1.01046945*x^2/(x^2-103.560653) )

Expressions for n

Reflection and related optical constants - BK7

Angle of incidence (0~90°): 

Direction: in out

Source of refractive index data

- SCHOTT optical glass data sheets [link]

Links

SCHOTT AG
Crown glass - Wikipedia
BK-7 Borosilicate Crown Glass - ICL

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