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Optical constants of HIKARI - LaSK (Lanthanum dense crown)
J-LASKH2

Wavelength: µm
 (0.280 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.01618042-0.0139280117λ^{2}-0.000204284446λ^{4}+0.0227027519λ^{-2}+0.000317846393λ^{-4}+1.01400049\text{×}10^{-05}λ^{-6}+3.63521536\text{×}10^{-08}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.7626e-06 1.1757e-08 -7.6008e-13 5.5794e-07 6.5081e-10 0.17656
nd: 1.755000
Vd: 52.336325
density: 4.29 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.1e-06 K-1
dPgF: -0.009
phosphate_resistance: 2.0

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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