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Optical constants of HIKARI - LaK (Lanthanum crown)
E-LAKH1

Wavelength: µm
 (0.290 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.98243942-0.00202422946λ^{2}+0.0267906679λ^{-2}-0.000632301437λ^{-4}+0.000110898621λ^{-6}-4.1584108\text{×}10^{-06}λ^{-8}-0.00495792836λ^{4}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
nd: 1.748099
Vd: 52.304982
glass_status: preferred
density: 4.23 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.9e-06 K-1
dPgF: -0.0094

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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