Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF55C
Wavelength:
µm
(0.330–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.89206469λ^2}{λ^2-0.00927969961}+\frac{0.383013491λ^2}{λ^2-0.035625946}+\frac{1.32100138λ^2}{λ^2-93.6667669}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.91e-06 1.02e-08 -6.88e-11 7.48e-07 2.17e-10 0.194
nd: 1.834810
Vd: 42.711575
glass_code: 835427
density: 4.73 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 6.2e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 7.8e-06 K-1
dPgF: -0.0081
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets