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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF3B

Wavelength: µm
 (0.340 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.96108042-0.00745575504λ^{2}+0.029397524λ^{-2}-0.000709734612λ^{-4}+0.000179647406λ^{-6}-7.42813844\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.32e-06 1.48e-08 -1.59e-10 5.14e-07 6.02e-10 0.283
n_d: 1.744004
V_d: 44.904207
glass_code: 744449
glass_status: standard
density: 4.39 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9.7e-06 K-1
ΔP_gF: -0.0025
climatic_resistance: 1.0

References

CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)

Data

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

INFO

CDGM Glass Co., Ltd.

CDGM Glass Co., Ltd. is a leading optical glass supplier in China with a worldwile distribution network.

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