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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF85L

Wavelength: µm
 (0.340 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=3.33472677-0.0126400664λ^{2}+0.0345933295λ^{-2}+0.000546091024λ^{-4}+4.29052791\text{×}10^{-05}λ^{-6}+2.50964053\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
λ_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 4.11e-06 1.35e-08 6.62e-12 8.93e-07 1.2e-09 0.194
n_d: 1.853702
V_d: 40.598749
glass_code: 854406
density: 5.28 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.3e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.7e-06 K-1
ΔP_gF: -0.0092
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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