Optical constants of SCHOTT - KF (Crownflint)
N-KF9
Wavelength:
µm
(0.35–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.19286778λ^2}{λ^2-0.00839154696}+\frac{0.0893346571λ^2}{λ^2-0.0404010786}+\frac{0.920819805λ^2}{λ^2-112.572446}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.66e-06 8.44e-09 -1.01e-11 6.1e-07 6.96e-10 0.217
nd: 1.52346
Vd: 51.54
glass_code: 523515.250
glass_status: standard
density: 2.499 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9.61e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.095e-05 K-1
dPgF: -0.0014
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 1.0
alkali_resistance: 1.0
phosphate_resistance: 1.0
Comments
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets