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Optical constants of HIKARI - LaK (Lanthanum crown)
J-LAK06

Wavelength: µm
 (0.330 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.75830673-0.0104979587λ^{2}-8.63280601\text{×}10^{-05}λ^{4}+0.0198026568λ^{-2}+0.000388736963λ^{-4}-3.98876195\text{×}10^{-07}λ^{-6}+8.98869177\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.9447e-06 1.3518e-08 -1.9509e-12 6.8878e-07 8.6935e-10 0.16406
nd: 1.677900
Vd: 50.668606
glass_status: preferred
density: 3.83 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.3e-06 K-1
dPgF: -0.0038
phosphate_resistance: 3.0

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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