Optical constants of CDGM - K (Crown)
H-K12
Wavelength:
µm
(0.320–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.31506425-0.00827156166λ^{2}+0.0129535559λ^{-2}+0.000268505199λ^{-4}-5.46028268\text{×}10^{-06}λ^{-6}+6.24325621\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.57e-06 1.35e-08 -5.16e-11 7.91e-07 9.19e-10 0.086
nd: 1.533589
Vd: 55.469983
glass_code: 534555
density: 2.72 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9.2e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.07e-05 K-1
dPgF: -0.0023
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets