Optical constants of SCHOTT - FK (Fluor crown)
N-FK51A
Wavelength:
µm
(0.29–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.971247817λ^2}{λ^2-0.00472301995}+\frac{0.216901417λ^2}{λ^2-0.0153575612}+\frac{0.904651666λ^2}{λ^2-168.68133}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.83e-05 -7.89e-09 -1.63e-12 3.74e-07 3.46e-10 0.15
nd: 1.48656
Vd: 84.47
glass_code: 487845.368
glass_status: standard
density: 3.675 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.274e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.481e-05 K-1
dPgF: 0.0342
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 52.3
alkali_resistance: 2.2
phosphate_resistance: 4.3
Comments
suitable for precision molding. step 0.5 available
References
SCHOTT Zemax catalog 2017-01-20b (obtained from http://www.schott.com)
See also SCHOTT glass data sheets