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Optical constants of HIKARI - LaK (Lanthanum crown)
J-LAK011

Wavelength: µm
 (0.280 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.96970289-0.0138160772λ^{2}-0.000188539623λ^{4}+0.021844812λ^{-2}+0.000320709012λ^{-4}+8.12772786\text{×}10^{-06}λ^{-6}+7.94854532\text{×}10^{-08}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 23.0 °C
coefficients_of_thermal_dispersion: 4.4663e-06 1.067e-08 -1.6899e-12 5.8363e-07 5.2555e-10 0.16733
n_d: 1.741000
V_d: 52.765834
density: 4.19 g/cm3
coefficient_of_thermal_expansion_1: 5.3e-06 K-1
ΔP_gF: -0.0086
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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