Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF78B
Wavelength:
µm
(0.350 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.299636528λ^2}{λ^2-0.047054626}+\frac{2.19452718λ^2}{λ^2-0.011540397}+\frac{1.53572385λ^2}{λ^2-112.608928}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: -4.39e-07 1.46e-08 -2.76e-11 8.87e-07 7.53e-10 0.22
nd: 1.900690
Vd: 37.050531
glass_code: 901371
density: 4.95 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.8e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.6e-06 K-1
dPgF: -0.0046
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets