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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF67-25

Wavelength: µm
 (0.350 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.36012388λ^2}{λ^2-103.579888}+\frac{2.09601012λ^2}{λ^2-0.011037962}+\frac{0.333537105λ^2}{λ^2-0.0449413554}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 3.22e-06 1.64e-08 -4.25e-11 8.62e-07 7.87e-10 0.235
nd: 1.882590
Vd: 37.185491
glass_code: 883372
density: 5.5 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 6.7e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.5e-06 K-1
dPgF: -0.0047
climatic_resistance: 1.0

Comments

anneal rate:25℃/h

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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