Optical constants of SUMITA - PSK (Dense phosphate crown)
K-PSK300(M)
Wavelength:
µm
(0.280–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.5141824-0.0093945858λ^{2}+0.012823443λ^{-2}+0.00025005056λ^{-4}-3.928511\text{×}10^{-06}λ^{-6}+4.4650519\text{×}10^{-08}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.33e-05 1.14e-08 -3e-11 4.03e-07 3.8e-10 0.173
nd: 1.59690
Vd: 65.3
glass_code: 600656
density: 3.49 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.05e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.28e-05 K-1
dPgF: 0.0067
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