Optical constants of SCHOTT - FK (Fluor crown)
N-FK58
Wavelength:
µm
(0.26–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.738042712λ^2}{λ^2-0.00339065607}+\frac{0.363371967λ^2}{λ^2-0.0117551189}+\frac{0.989296264λ^2}{λ^2-212.842145}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.05e-05 -6.33e-09 4.13e-11 3.84e-07 1.63e-10 0.073
nd: 1.456
Vd: 90.9
glass_code: 456909.365
glass_status: standard
density: 3.646 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.367e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.572e-05 K-1
dPgF: 0.0438
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 52.3
alkali_resistance: 3.3
phosphate_resistance: 4.3
Comments
XLD glass
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets