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Optical constants of HIKARI - LaK (Lanthanum crown)
J-LAK09

Wavelength: µm
 (0.280 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.94471329-0.0139489672λ^{2}-0.000208989528λ^{4}+0.0221246396λ^{-2}+0.000296283761λ^{-4}+1.28986233\text{×}10^{-05}λ^{-6}-4.34524857\text{×}10^{-08}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 5.9241e-06 1.2992e-08 -2.1645e-12 5.8159e-07 6.1694e-10 0.17025
nd: 1.734000
Vd: 51.508682
density: 4.0 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 4.9e-06 K-1
dPgF: -0.0099
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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