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Optical constants of CDGM - TF (Special flint)
H-TF8

Wavelength: µm
 (0.330 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{1.6056299λ^2}{λ^2-0.0103174707}+\frac{1.32554029λ^2}{λ^2-108.474162}+\frac{0.265358825λ^2}{λ^2-0.0488739276}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: -1.81e-07 1.7e-08 -3.95e-11 7.69e-07 5.75e-10 0.256
nd: 1.720460
Vd: 34.757746
glass_code: 720348
glass_status: preferred
density: 3.51 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 7.1e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.8e-06 K-1
dPgF: -0.0014
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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