Optical constants of SCHOTT - K (Crown)
K5G20
Wavelength:
µm
(0.37–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.14094396λ^2}{λ^2-0.00694945478}+\frac{0.14500119λ^2}{λ^2-0.0310574444}+\frac{37.4705786λ^2}{λ^2-4536.25624}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.22e-06 8.45e-09 -3.31e-11 5.44e-07 4.95e-10 0.214
nd: 1.52344
Vd: 56.76
glass_code: 523568.259
glass_status: special
density: 2.593 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.99e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.028e-05 K-1
dPgF: 0.0017
stain_resistance: 0.0
acid_resistance: 1.0
alkali_resistance: 1.0
Comments
inquiry glass
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets