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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF92

Wavelength: µm
 (0.360–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.86762237λ^2}{λ^2-123.07862}+\frac{0.375569196λ^2}{λ^2-0.059664373}+\frac{2.45933103λ^2}{λ^2-0.014148158}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -5.53e-07 1.56e-08 -5.25e-11 1e-06 1.17e-09 0.275
nd: 2.003300
Vd: 28.316305
density: 5.02 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.9e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.7e-06 K-1
dPgF: 0.0057
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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