Optical constants of CDGM - ZPK (Dense phosphate crown)
D-ZPK1A-25
Wavelength:
µm
(0.300–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.860621496λ^2}{λ^2-0.0142471941}+\frac{0.723408663λ^2}{λ^2-0.00293226364}+\frac{0.91527878λ^2}{λ^2-109.074599}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.27e-05 7.36e-09 -1.75e-13 4.58e-07 2.54e-10 0.183
nd: 1.619990
Vd: 63.763831
glass_code: 620638
density: 3.69 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.05e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.28e-05 K-1
dPgF: 0.0062
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