Optical constants of SUMITA - PBK
K-PBK50
Wavelength:
µm
(0.270–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.2879519-0.010513752λ^{2}+0.010963175λ^{-2}+0.00027027054λ^{-4}-1.7054549\text{×}10^{-05}λ^{-6}+1.0857039\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 5.1e-08 2.09e-08 -1.11e-11 4.38e-07 5.79e-10 0.176
nd: 1.52250
Vd: 62.3
glass_code: 523623
density: 2.43 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 6.7e-06 K-1
- temperature_range: 20 300 °C
coefficient: 9.2e-06 K-1
dPgF: -0.0046
climatic_resistance: 2.0
acid_resistance: 4.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book