Optical constants of CDGM - ZK (Dense crown)
D-ZK79-25
Wavelength:
µm
(0.300–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.754687333λ^2}{λ^2-0.00315353195}+\frac{0.788729239λ^2}{λ^2-0.0162517857}+\frac{1.10213843λ^2}{λ^2-112.78636}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 6.7e-07 1.89e-08 -2.68e-10 2.21e-07 1.09e-09 0.312
nd: 1.608090
Vd: 57.820851
glass_code: 608578
density: 3.19 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.9e-06 K-1
dPgF: -0.0026
climatic_resistance: 4.0
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