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Optical constants of HIKARI - BaK (Barium crown)
J-BAK4

Wavelength: µm
 (0.330 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

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
λ_is_vacuum: false
temperature: 23.0 °C
coefficients_of_thermal_dispersion: 1.7273e-06 1.4151e-08 -2.7892e-12 5.6282e-07 4.9115e-10 0.1856
n_d: 1.568830
V_d: 56.000795
density: 2.84 g/cm3
coefficient_of_thermal_expansion_1: 7e-06 K-1
ΔP_gF: -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

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

Hikari Glass Co., Ltd.

Hikari Glass Co., Ltd. is a Japanese glass maker, a subsidiary of Nikon Corp.

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