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Optical constants of HIKARI - LaK (Lanthanum crown)
LAK04

Wavelength: µm
 (0.320 – 0.7)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.676809-0.01021733λ^{2}+0.01773895λ^{-2}+2.822472\text{×}10^{-05}λ^{-4}+4.3274\text{×}10^{-05}λ^{-6}-2.158473\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
nd: 1.651000
Vd: 56.171381
glass_code: 651562
glass_status: preferred
density: 3.28 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8e-06 K-1
dPgF: -0.0012

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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