Optical constants of SCHOTT - FK (Fluor crown)
FK3
Wavelength:
µm
(0.3–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.973346627λ^2}{λ^2-0.00640795469}+\frac{0.146642231λ^2}{λ^2-0.020565293}+\frac{0.679304225λ^2}{λ^2-80.4965389}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -4.9e-06 1.23e-08 -1.19e-10 3.45e-07 7.72e-10 0.18
nd: 1.4645
Vd: 65.77
glass_code: 464658.227
glass_status: special
density: 2.27 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.4e-06 K-1
dPgF: -0.0003
climatic_resistance: 2.0
stain_resistance: 3.0
acid_resistance: 52.4
alkali_resistance: 2.0
phosphate_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