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Optical constants of CDGM - BAK (Barium crown)
H-BAK8

Wavelength: µm
 (0.290 – 2.400)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]

$$n^2-1=\frac{0.845101506λ^2}{λ^2-100.298196}+\frac{1.01452466λ^2}{λ^2-0.00555241848}+\frac{0.418518474λ^2}{λ^2-0.0202280796}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
  - type: "Schott formula"
    coefficients: 6.29e-08 1.64e-08 -1.82e-11 4.71e-07 4.87e-10 0.223
nd: 1.572500
Vd: 57.486797
glass_code: 573575
density: 3.18 g/cm3
thermal_expansion:
  - temperature_range: -30 70 ℃
    coefficient: 7.4e-06 K-1
  - temperature_range: 20 300 ℃
    coefficient: 8.9e-06 K-1
dPgF: -0.001
climatic_resistance: 2.0

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

BAK1 optical glass

BAK1 is a very popular optical glass. Most glass makers produce this or very similar glass.

BAK1 or similar glasses produced by different makers

Maker Glass
Schott N-BAK1
Hikari E-BAK1
Ohara S-BAL11
CDGM H-BAK8

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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