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Optical constants of CDGM - F (Flint)
F4

Wavelength: µm
 (0.320 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.5544667-0.00847847799λ^{2}+0.0232832892λ^{-2}+0.000583809482λ^{-4}+2.1963001\text{×}10^{-05}λ^{-6}+1.96537708\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.9e-06 2.24e-08 -2.95e-11 9.73e-07 8.74e-10 0.246
nd: 1.620047
Vd: 36.356730
glass_code: 620364
density: 3.57 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 9.1e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.14e-05 K-1
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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