Optical constants of CDGM - K (Crown)
K4A
Wavelength:
µm
(0.320–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.749532263λ^2}{λ^2-0.0148033503}+\frac{0.494866234λ^2}{λ^2+0.000264092219}+\frac{0.96016866λ^2}{λ^2-95.7190154}$$Conditions & Spec sheet
n_absolute: false wavelength_vacuum: false temperature: 20.0 ℃ thermal_dispersion: - type: "Schott formula" coefficients: 7.37e-06 2.2e-08 -6.81e-12 4.56e-07 4.32e-10 0.199 nd: 1.508020 Vd: 61.052897 glass_code: 508611 density: 2.43 g/cm3 thermal_expansion: - temperature_range: -30 70 ℃ coefficient: 4.7e-06 K-1 - temperature_range: 20 300 ℃ coefficient: 5.2e-06 K-1 dPgF: -0.0028 climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets