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Optical constants of HIKARI - BaK (Barium crown)
J-BAK2

Wavelength: µm
 (0.290 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.3361606-0.00818245071λ^{2}-9.82753897\text{×}10^{-05}λ^{4}+0.0127499096λ^{-2}+0.000122269251λ^{-4}+8.48994057\text{×}10^{-06}λ^{-6}-1.59525058\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -7.17e-07 1.3367e-08 -3.1142e-12 5.3353e-07 5.8825e-10 0.17288
n_d: 1.539960
V_d: 59.523574
density: 2.84 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.6e-06 K-1
ΔP_gF: -0.0008
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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