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Optical constants of HIKARI - LaSF (Lanthanum dense flint)
J-LASF05

Wavelength: µm
 (0.320 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.27458352-0.013275214λ^{2}-0.000135438033λ^{4}+0.0311933067λ^{-2}+0.000711503841λ^{-4}+3.51334559\text{×}10^{-06}λ^{-6}+1.88560229\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.0543e-06 1.1001e-08 -2.1068e-12 6.9279e-07 6.3486e-10 0.22476
n_d: 1.834810
V_d: 42.733437
density: 4.79 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.5e-06 K-1
ΔP_gF: -0.0079
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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