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Optical constants of CDGM - BAK (Barium crown)
H-BAK7GT

Wavelength: µm
 (0.320 – 2.400)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula

$$n^2=2.41803544-0.0076261289λ^{2}+0.0165596275λ^{-2}-0.000521246254λ^{-4}+0.000106128523λ^{-6}-4.8581855\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 °C
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 1.23e-06 1.49e-08 -4.95e-11 4.16e-07 1.11e-10 0.251
nd: 1.568832
Vd: 56.059608
glass_code: 569560
glass_status: standard
density: 2.83 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 7.2e-06 K-1
  - temperature_range: 20 300 °C
    coefficient: 9e-06 K-1
dPgF: -0.0005
climatic_resistance: 2.0

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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