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Optical constants of HIKARI - LaF (Lanthanum flint)
J-LAF05

Wavelength: µm
 (0.330 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.01897142-0.0106135241λ^{2}-3.56215294\text{×}10^{-05}λ^{4}+0.0284177137λ^{-2}+0.000843869366λ^{-4}-1.12827377\text{×}10^{-05}λ^{-6}+3.11337221\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 8.9831e-06 1.4643e-08 -2.2499e-12 9.6665e-07 9.3427e-10 0.21126
nd: 1.762000
Vd: 40.113731
density: 3.94 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.3e-06 K-1
dPgF: -0.0046
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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