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

Wavelength: µm
 (0.280 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.22226661λ^2}{λ^2-0.014065122}+\frac{0.880444178λ^2}{λ^2-0.004204574}+\frac{0.797848915λ^2}{λ^2-171.029818}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -2.16e-05 -5.35e-09 -8.74e-12 3.15e-07 2.57e-10 0.172
nd: 1.456500
Vd: 90.273821
glass_code: 457903
density: 3.63 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 1.36e-05 K-1
  - temperature_range: 20 300 ℃
    coefficient: 1.67e-05 K-1
dPgF: 0.0429
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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