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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF85LN-25

Wavelength: µm
 (0.340–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.22657126λ^2}{λ^2-93.6444885}+\frac{0.367411998λ^2}{λ^2-0.0394561346}+\frac{1.93493865λ^2}{λ^2-0.00982834912}$$

Conditions & Spec sheet

n_is_absolute: false
wavelength_is_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 4.18e-06 1.74e-08 -3.81e-11 8.61e-07 5.26e-10 0.215
nd: 1.844430
Vd: 40.067973
glass_code: 844401
density: 4.96 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.3e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 8.2e-06 K-1
dPgF: -0.0062
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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