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Optical constants of CDGM - FK (Fluor crown)
H-FK71

Wavelength: µm
 (0.280 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.103249-0.0050247988λ^{2}+0.0065323077λ^{-2}+0.00013078405λ^{-4}-6.3652072\text{×}10^{-06}λ^{-6}+1.9254745\text{×}10^{-07}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.16e-05 -4.05e-09 6.62e-11 3.33e-07 1.06e-10 0.184
nd: 1.456500
Vd: 90.269745
glass_code: 457903
density: 3.63 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 1.36e-05 K-1
  - temperature_range: 20 300 °C
    coefficient: 1.67e-05 K-1
dPgF: 0.0398
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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