Optical constants of SUMITA - PBK
K-PBK40
Wavelength:
µm
(0.280–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.2744024-0.01070289λ^{2}+0.010577306λ^{-2}+0.00022857431λ^{-4}-7.2914225\text{×}10^{-06}λ^{-6}+2.4124054\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 4.91e-06 2.06e-08 1.52e-11 4.18e-07 1.61e-10 0.165
nd: 1.51760
Vd: 63.5
glass_code: 518635
density: 2.39 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 5.4e-06 K-1
- temperature_range: 20 300 °C
coefficient: 7.3e-06 K-1
dPgF: -0.0044
climatic_resistance: 2.0
acid_resistance: 1.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book