Optical constants of CDGM - PK (Phosphate crown)
D-PK3
Wavelength:
µm
(0.300–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.631688714λ^2}{λ^2-0.0127792227}+\frac{0.666896432λ^2}{λ^2-0.00313927857}+\frac{0.874644819λ^2}{λ^2-90.174067}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -3.49e-06 1.52e-08 -7.04e-11 4.13e-07 3.57e-10 0.131
nd: 1.525000
Vd: 70.370578
glass_code: 525704
density: 2.65 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.8e-06 K-1
dPgF: 0.0048
climatic_resistance: 2.0
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