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Optical constants of HIKARI - LaK (Lanthanum crown)
LAK12

Wavelength: µm
 (0.290 – 0.7)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.780948-0.0236625λ^{2}+0.008676537λ^{-2}+0.00294181λ^{-4}-0.0003515541λ^{-6}+1.844065\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
nd: 1.677900
Vd: 55.397516
glass_code: 678554
glass_status: preferred
density: 4.0 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8.6e-06 K-1
dPgF: -0.007

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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