Optical constants of CDGM - TF (Special flint)
TF3
Wavelength:
µm
(0.320–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.54141593-0.0106607788λ^{2}+0.021716721λ^{-2}-0.000401848477λ^{-4}+0.000122475727λ^{-6}-4.7776413\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.03e-06 2.69e-08 -1.67e-10 5.52e-07 -6.81e-10 0.246
nd: 1.612423
Vd: 44.093486
glass_code: 612441
glass_status: preferred
density: 3.25 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 5.5e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 6.4e-06 K-1
dPgF: -0.0073
climatic_resistance: 4.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets