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Optical constants of CDGM - LAF (Lanthanum flint)
H-LAF6LA

Wavelength: µm
 (0.320 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.12023521λ^2}{λ^2-0.00335766705}+\frac{0.897573526λ^2}{λ^2-0.0227710735}+\frac{1.3665486λ^2}{λ^2-92.0376324}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 4.32e-06 1.59e-08 -1.31e-11 6.18e-07 3.24e-10 0.187
nd: 1.757000
Vd: 47.711817
glass_code: 757477
density: 4.06 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 5.7e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 6.9e-06 K-1
dPgF: -0.0088
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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