Optical constants of CDGM - K (Crown)
D-K9GT
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.567853792λ^2}{λ^2-0.00238581579}+\frac{0.702269689λ^2}{λ^2-0.0135348332}+\frac{1.08102455λ^2}{λ^2-107.748228}$$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: 1.516330
Vd: 64.058952
glass_code: 516641
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: -0.0027
climatic_resistance: 1.0
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