Optical constants of CDGM - QK (Light crown)
D-QK3L
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{0.601737491λ^2}{λ^2-0.012574974}+\frac{0.858737004λ^2}{λ^2-92.3325663}+\frac{0.586761501λ^2}{λ^2-0.002687509}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -9.26e-06 1.71e-08 -1.54e-11 3.26e-07 5.95e-10 0.187
nd: 1.487490
Vd: 70.440487
glass_code: 487704
density: 2.43 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 9.1e-06 K-1
- temperature_range: 20 300 °C
coefficient: 1.01e-05 K-1
dPgF: 0.0035
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