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Optical constants of CDGM - LAF (Lanthanum flint)
D-LAF79

Wavelength: µm
 (0.340 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.26530456λ^2}{λ^2-0.0420844203}+\frac{1.45255299λ^2}{λ^2-117.349274}+\frac{1.65170478λ^2}{λ^2-0.00935611552}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
nd: 1.730770
Vd: 40.508021
glass_code: 731405
density: 3.21 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 9e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 1.11e-05 K-1
dPgF: -0.0047
climatic_resistance: 3.0

Comments

anneal rate:4℃/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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