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Optical constants of HIKARI - LaSF (Lanthanum dense flint)
J-LASFH17

Wavelength: µm
 (0.380 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.81071676-0.0163737936λ^{2}+0.0583672875λ^{-2}+0.00412726108λ^{-4}-0.000552229126λ^{-6}+0.000141302816λ^{-8}-1.45517862\text{×}10^{-05}λ^{-10}+7.444268\text{×}10^{-07}λ^{-12}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 2.5238e-07 1.1713e-08 -1.0359e-12 1.1589e-06 1.6245e-09 0.2809
nd: 2.000690
Vd: 25.455728
density: 4.69 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.8e-06 K-1
dPgF: 0.0123
phosphate_resistance: 1.0

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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