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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF55D

Wavelength: µm
 (0.320 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.27258827-0.0129423515λ^{2}+0.032844328λ^{-2}+0.000183315988λ^{-4}+7.64020197\text{×}10^{-05}λ^{-6}-1.75379429\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.74e-07 1.44e-08 3.75e-12 9.75e-07 1.1e-09 0.102
nd: 1.834810
Vd: 42.727483
glass_code: 835427
glass_status: standard
density: 4.56 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.4e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.1e-06 K-1
dPgF: -0.0081
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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