Optical constants of SCHOTT - K (Crown)
N-ZK7
Wavelength:
µm
(0.3–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.07715032λ^2}{λ^2-0.00676601657}+\frac{0.168079109λ^2}{λ^2-0.0230642817}+\frac{0.851889892λ^2}{λ^2-89.0498778}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.15e-05 1.73e-08 -8.06e-11 4.32e-07 7.05e-10 0.179
nd: 1.50847
Vd: 61.19
glass_code: 508612.249
glass_status: standard
density: 2.49 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 4.5e-06 K-1
- temperature_range: 20 300 °C
coefficient: 5.2e-06 K-1
dPgF: -0.0039
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 2.0
alkali_resistance: 1.2
phosphate_resistance: 2.2
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets