Optical constants of CDGM - K (Crown)
D-K9-25
Wavelength:
µm
(0.290–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.08234297λ^2}{λ^2-107.907645}+\frac{0.548438846λ^2}{λ^2-0.002190929}+\frac{0.719999855λ^2}{λ^2-0.013407002}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.87e-06 1.55e-08 -1.35e-11 4.17e-07 5.2e-10 0.177
nd: 1.515770
Vd: 63.989637
glass_code: 516640
density: 2.41 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.8e-06 K-1
dPgF: -0.0029
climatic_resistance: 1.0
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