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Optical constants of HOYA - LaF (Lanthanum flint)
E-LAF7

Wavelength: µm
 (0.360 – 1.550)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.9704178-0.013290679λ^{2}+0.028359006λ^{-2}+0.0017661786λ^{-4}-0.00012453482λ^{-6}+1.3951937\text{×}10^{-05}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.20779e-06 0.0 0.0 0.0 0.0 0.0
nd: 1.74950
Vd: 35.04
glass_code: 750350
glass_status: special
density: 3.72 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.8e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.2e-06 K-1
dPgF: 0.0053
climatic_resistance: 1.0
stain_resistance: 1.0
acid_resistance: 2.0

Comments

Not in a position to accept new order because of discontinuation.

References

HOYA Zemax catalog 2017-04-01 (obtained from http://www.hoya-opticalworld.com)

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

INFO

HOYA Corporation

Hoya Corporation is a Japanese company manufacturing optical products.

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