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Optical constants of HIKARI - LaF (Lanthanum flint)
J-LAFH3

Wavelength: µm
 (0.370 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.1015892-0.013347498λ^{2}+0.0364605893λ^{-2}+0.00326400857λ^{-4}-0.000624213023λ^{-6}+0.000140210775λ^{-8}-1.42247779\text{×}10^{-05}λ^{-10}+6.58468818\text{×}10^{-07}λ^{-12}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.0541e-07 1.2104e-08 -1.4807e-12 1.0038e-06 1.2969e-09 0.2687
nd: 1.795040
Vd: 28.692277
density: 3.61 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.8e-06 K-1
dPgF: 0.0103
phosphate_resistance: 1.0

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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