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Optical constants of CDGM - QF (Light flint)
H-QF50

Wavelength: µm
 (0.360 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.29450546λ^2}{λ^2-0.00894503808}+\frac{0.150752291λ^2}{λ^2-0.0483713581}+\frac{1.08698065λ^2}{λ^2-113.959763}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 4.05e-07 2.23e-09 5.39e-11 5.36e-07 1.83e-09 0.288
nd: 1.581440
Vd: 40.888972
glass_code: 581409
density: 2.6 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 7.7e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 9.9e-06 K-1
dPgF: 0.0013

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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