Optical constants of SUMITA - PG
K-PG325
Wavelength:
µm
(0.280–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.2433502-0.0070443238λ^{2}+0.0095932746λ^{-2}+0.00019364616λ^{-4}-9.8585539\text{×}10^{-06}λ^{-6}+6.1088785\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.86e-05 -3.2e-09 -2.53e-11 4.98e-07 8.02e-10 0.172
nd: 1.50670
Vd: 70.5
glass_code: 507705
density: 3.0 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.43e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.65e-05 K-1
dPgF: 0.0124
climatic_resistance: 1.0
acid_resistance: 5.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book