Optical constants of CDGM - LAF (Lanthanum flint)
D-LAF79-25
Wavelength:
µm
(0.340 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.244124156λ^2}{λ^2-0.0430784572}+\frac{1.39592511λ^2}{λ^2-113.324709}+\frac{1.66977539λ^2}{λ^2-0.00964211165}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
nd: 1.729860
Vd: 40.497566
glass_code: 730405
density: 3.21 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 9e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 1.11e-05 K-1
dPgF: -0.0049
climatic_resistance: 3.0
Comments
anneal rate:25℃/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets