Optical constants of SUMITA - PMK
K-PMK30
Wavelength:
µm
(0.280–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.2984199-0.0098977917λ^{2}+0.010454435λ^{-2}-1.1762246\text{×}10^{-05}λ^{-4}+2.220678\text{×}10^{-05}λ^{-6}-1.2212713\text{×}10^{-06}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 3.49e-07 1.51e-08 -7.35e-11 3.65e-07 5.07e-10 0.174
nd: 1.52500
Vd: 70.4
glass_code: 525704
density: 2.6 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 8.3e-06 K-1
- temperature_range: 20 300 °C
coefficient: 8.7e-06 K-1
dPgF: 0.0062
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