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Optical constants of HIKARI - LaF (Lanthanum flint)
Q-LAFPH1S

Wavelength: µm
 (0.300 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.97184328-0.0126569714λ^{2}-0.000162723834λ^{4}+0.0232616036λ^{-2}+0.000403316269λ^{-4}+6.85871554\text{×}10^{-06}λ^{-6}+3.74016912\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 9.030377e-06 1.284114e-08 3.060448e-12 7.261363e-07 6.956703e-10 0.1861246
nd: 1.743104
Vd: 49.436916
density: 4.25 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 5.2e-06 K-1
dPgF: -0.0084
phosphate_resistance: 4.0

Comments

For mold lens

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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