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Optical constants of HIKARI - LaF (Lanthanum flint)
J-LAF02

Wavelength: µm
 (0.340 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.88586901-0.0102242298λ^{2}-5.7330265\text{×}10^{-05}λ^{4}+0.0243594329λ^{-2}+0.000671639978λ^{-4}-1.38459487\text{×}10^{-05}λ^{-6}+2.96139784\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 4.4651e-06 1.1439e-08 -6.6607e-13 7.7072e-07 7.8052e-10 0.21966
nd: 1.720000
Vd: 43.610054
density: 3.88 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.8e-06 K-1
dPgF: -0.0029
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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