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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF52LA-25

Wavelength: µm
 (0.340–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.85743559λ^2}{λ^2-0.00962363637}+\frac{0.323469816λ^2}{λ^2-0.0398398385}+\frac{1.2894946λ^2}{λ^2-98.4654718}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 5.23e-06 1.56e-08 -3.55e-11 8.33e-07 7.37e-10 0.217
nd: 1.808820
Vd: 40.970313
glass_code: 809410
density: 4.56 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.6e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.3e-06 K-1
dPgF: -0.0058
climatic_resistance: 1.0

Comments

anneal rate:25°C/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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