Optical constants of CDGM - LAK (Lanthanum crown)
H-LAK53B
Wavelength:
µm
(0.280–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{1.0314122λ^2}{λ^2-0.00395421648}+\frac{0.985282193λ^2}{λ^2-0.0186863118}+\frac{1.17066017λ^2}{λ^2-81.1326753}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.22e-06 1.66e-08 -2.94e-11 5.17e-07 4.19e-10 0.196
nd: 1.755000
Vd: 52.322058
glass_code: 755523
glass_status: standard
density: 4.22 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.3e-06 K-1
dPgF: -0.0091
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets