Optical constants of CDGM - ZK (Dense crown)
D-ZK21-25
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.08777542λ^2}{λ^2-0.0143531981}+\frac{0.505694645λ^2}{λ^2+0.000448862561}+\frac{1.31533152λ^2}{λ^2-104.063333}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.26e-06 1.53e-08 -2.43e-11 4.86e-07 2.51e-10 0.199
nd: 1.623460
Vd: 58.115078
glass_code: 623581
density: 2.99 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.4e-06 K-1
dPgF: -0.0066
climatic_resistance: 1.0
Comments
anneal rate:25°C/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets