Optical constants of CDGM - ZPK (Dense phosphate crown)
D-ZPK7
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.725400532λ^2}{λ^2-0.00296983783}+\frac{0.703767661λ^2}{λ^2-0.013434264}+\frac{0.77228314λ^2}{λ^2-135.211711}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -2.47e-05 -2.21e-09 5.2e-12 4.58e-07 5.69e-10 0.082
nd: 1.569070
Vd: 71.304254
glass_code: 569713
density: 4.36 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.33e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.58e-05 K-1
dPgF: 0.02
climatic_resistance: 1.0
Comments
anneal rate:4°C/h
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets