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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF85LS-25

Wavelength: µm
 (0.340 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.70152719λ^2}{λ^2-0.00796295658}+\frac{0.633298236λ^2}{λ^2-0.0320099725}+\frac{1.43191921λ^2}{λ^2-110.67927}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
nd: 1.853440
Vd: 40.557917
glass_code: 853406
density: 5.29 g/cm3
thermal_expansion:
  - temperature_range: 20 300 ℃
    coefficient: 8.1e-06 K-1
dPgF: -0.008

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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