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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF69A

Wavelength: µm
 (0.320 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.39269903λ^2}{λ^2-0.00593335223}+\frac{0.823697428λ^2}{λ^2-0.0240980834}+\frac{1.29547295λ^2}{λ^2-95.3762858}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.27e-06 1.3e-08 -2.95e-11 6.42e-07 8.08e-10 0.182
nd: 1.816000
Vd: 46.556066
glass_code: 816466
density: 5.06 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 6.4e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 7.8e-06 K-1
dPgF: -0.0089
climatic_resistance: 1.0

References

CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets

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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