RefractiveIndex.INFO

Refractive index database


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Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF55C

Wavelength: µm
 (0.330 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=3.27170954-0.0126721575λ^{2}+0.0335300924λ^{-2}-2.4910401\text{×}10^{-05}λ^{-4}+0.00010247728λ^{-6}-2.87496464\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.91e-06 1.02e-08 -6.88e-11 7.48e-07 2.17e-10 0.194
nd: 1.834813
Vd: 42.743244
glass_code: 835427
density: 4.73 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.2e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.8e-06 K-1
dPgF: -0.0095
climatic_resistance: 1.0

References

CDGM Zemax catalog 2017-09 (obtained from http://www.cdgmgd.com)

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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