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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
D-ZLAF61-25

Wavelength: µm
 (0.340 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.384732155λ^2}{λ^2-0.0355326885}+\frac{1.8424092λ^2}{λ^2-0.00916902591}+\frac{1.21280764λ^2}{λ^2-95.9091697}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 4.38e-06 1.46e-08 -1.77e-11 7.39e-07 6.32e-10 0.229
nd: 1.821310
Vd: 42.674895
glass_code: 821427
density: 4.92 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 6.6e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.5e-06 K-1
dPgF: -0.0068
climatic_resistance: 1.0

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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