Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF52
Wavelength:
µm
(0.302–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.225893751λ^2}{λ^2-0.0391551736}+\frac{1.88248028λ^2}{λ^2-0.0100951886}+\frac{1.11307009λ^2}{λ^2-85.0042906}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 7.32e-06 1.67e-08 -2.76e-11 7.23e-07 7.76e-10 0.219
nd: 1.785900
Vd: 44.187159
glass_code: 786442
density: 4.39 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.9e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.2e-06 K-1
dPgF: -0.0083
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets