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Optical constants of HIKARI - LaK (Lanthanum crown)
J-LAK7R

Wavelength: µm
 (0.280–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.68281356-0.012462194λ^{2}-0.000136478256λ^{4}+0.0162751692λ^{-2}+0.000253121787λ^{-4}+1.72812439\text{×}10^{-07}λ^{-6}+2.34124836\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.54376e-06 1.24315e-08 2.17432e-12 4.46388e-07 4.86384e-10 0.184172
nd: 1.651600
Vd: 58.618566
density: 3.34 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.1e-06 K-1
dPgF: -0.0051
phosphate_resistance: 4.0

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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