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Refractive index database


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Optical constants of CDGM - TF (Special flint)
TF3

Wavelength: µm
 (0.320–2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.54141593-0.0106607788λ^{2}+0.021716721λ^{-2}-0.000401848477λ^{-4}+0.000122475727λ^{-6}-4.7776413\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 5.03e-06 2.69e-08 -1.67e-10 5.52e-07 -6.81e-10 0.246
nd: 1.612423
Vd: 44.093486
glass_code: 612441
glass_status: preferred
density: 3.25 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 5.5e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 6.4e-06 K-1
dPgF: -0.0073
climatic_resistance: 4.0

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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