Optical constants of SUMITA - PSK (Dense phosphate crown)
K-PSK500(M)
Wavelength:
µm
(0.270–2.000)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.3725199-0.0067756972λ^{2}+0.01066551λ^{-2}+0.00018548975λ^{-4}-5.7674134\text{×}10^{-06}λ^{-6}+3.2946743\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: -1.34e-05 6.83e-09 1.81e-11 3.74e-07 5.55e-10 0.195
nd: 1.55000
Vd: 71.9
glass_code: 552720
density: 3.76 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 1.08e-05 K-1
- temperature_range: 20 300 °C
coefficient: 1.29e-05 K-1
dPgF: 0.0178
climatic_resistance: 1.0
acid_resistance: 2.0
References
SUMITA Zemax catalog 2017-02-02 (obtained from http://www.sumita-opt.co.jp)
See also SUMITA optical glass data book