Optical constants of CDGM - ZK (Dense crown)
H-ZK20
Wavelength:
µm
(0.290–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.812249368λ^2}{λ^2-0.0181753969}+\frac{0.755251214λ^2}{λ^2-0.00247827771}+\frac{1.15073913λ^2}{λ^2-144.030731}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.38e-07 1.59e-08 -2.45e-11 6.4e-07 4.47e-10 0.192
nd: 1.617200
Vd: 53.913743
glass_code: 617539
density: 3.66 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7.8e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9e-06 K-1
dPgF: -0.0009
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets