Optical constants of SCHOTT - BaLF (Barium light flint)
N-BALF4
Wavelength:
µm
(0.35–2.5)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.31004128λ^2}{λ^2-0.0079659645}+\frac{0.142038259λ^2}{λ^2-0.0330672072}+\frac{0.964929351λ^2}{λ^2-109.19732}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.33e-06 1.47e-08 -1.58e-11 5.75e-07 6.58e-10 0.195
nd: 1.57956
Vd: 53.87
glass_code: 580539.311
glass_status: standard
density: 3.111 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.52e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.41e-06 K-1
dPgF: -0.0012
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