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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF75B

Wavelength: µm
 (0.360 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.48346668-0.0133305235λ^{2}+0.046504237λ^{-2}+0.00100655469λ^{-4}+5.58112511\text{×}10^{-05}λ^{-6}+7.97155171\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.9e-06 1.14e-08 -2.95e-11 7.58e-07 9.54e-10 0.287
n_d: 1.903663
V_d: 31.419748
glass_code: 904314
density: 4.56 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.8e-06 K-1
ΔP_gF: 0.0023

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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