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Optical constants of CDGM - K (Crown)
D-K9

Wavelength: µm
 (0.280 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.27154844-0.0108815116λ^{2}+0.00996474656λ^{-2}+0.000380487041λ^{-4}-2.93440524\text{×}10^{-05}λ^{-6}+1.45099948\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 5.87e-06 2.83e-08 -2.76e-10 3.3e-07 9.87e-10 0.244
nd: 1.516324
Vd: 64.048495
glass_code: 516641
density: 2.41 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 6.3e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 7.8e-06 K-1
dPgF: -0.0031
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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