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Optical constants of HIKARI - LaSF (Lanthanum dense flint)
J-LASF016

Wavelength: µm
 (0.300 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.07219058-0.0142144846λ^{2}-0.000167817254λ^{4}+0.0244174902λ^{-2}+0.000425680243λ^{-4}+6.77243763\text{×}10^{-06}λ^{-6}+4.02219194\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.2586e-06 1.1018e-08 -6.6547e-13 6.1771e-07 3.556e-10 0.17922
nd: 1.772500
Vd: 49.620185
density: 4.26 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.5e-06 K-1
dPgF: -0.0093
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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