Optical constants of HIKARI - BaK (Barium crown)
J-BAK4
Wavelength:
µm
(0.330–2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2=2.42114503-0.00899959341λ^{2}-9.30006854\text{×}10^{-05}λ^{4}+0.014307112λ^{-2}+0.000189993274λ^{-4}+6.09602388\text{×}10^{-06}λ^{-6}+2.25737069\text{×}10^{-07}λ^{-8}$$Conditions & Spec sheet
n_is_absolute: false
wavelength_is_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
- type: "Schott formula"
coefficients: 1.7273e-06 1.4151e-08 -2.7892e-12 5.6282e-07 4.9115e-10 0.1856
nd: 1.568830
Vd: 56.000795
density: 2.84 g/cm3
thermal_expansion:
- temperature_range: -30 70 °C
coefficient: 7e-06 K-1
dPgF: -0.002
phosphate_resistance: 2.0
References
NIKON Zemax catalog 2017-11 (obtained from http://www.nikon.com)
See also HIKARI glass data sheets
Data
INFO
Hikari Glass Co., Ltd.
Hikari Glass Co., Ltd. is a Japanese glass maker, a subsidiary of Nikon Corp.External links
- Hikari Glass Co., Ltd. (in Japanese)
- Nikon