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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF4

Wavelength: µm
 (0.360 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.95612047-0.00557678753λ^{2}+0.0372582362λ^{-2}-0.000718686091λ^{-4}+0.000199998634λ^{-6}-2.80025194\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 6.53e-07 1.81e-08 -1.59e-10 9.02e-07 8.16e-10 0.246
nd: 1.749501
Vd: 35.020925
glass_code: 750350
glass_status: standard
density: 3.92 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9.5e-06 K-1
dPgF: 0.0003
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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