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Optical constants of HIKARI - BaK (Barium crown)
E-BAK1

Wavelength: µm
 (0.290 – 0.7)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula

$$n^2=2.44353274-0.0161455184λ^{2}+0.00881927898λ^{-2}+0.00144687542λ^{-4}-0.000136331798λ^{-6}+6.03309808\text{×}10^{-06}λ^{-8}$$

Conditions & Spec sheet

n_absolute: false
wavelength_vacuum: false
temperature: 23.0 °C
nd: 1.572500
Vd: 57.738955
glass_code: 572577
glass_status: preferred
density: 3.16 g/cm3
thermal_expansion:
  - temperature_range: -30 70 °C
    coefficient: 8.5e-06 K-1
dPgF: 0.0003

References

NIKON Zemax catalog 2017-11 (obtained from http://www.nikon.com)
See also HIKARI 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

Hikari Glass Co., Ltd.

Hikari Glass Co., Ltd. is a Japanese glass maker, a subsidiary of Nikon Corp.

External links


Glass

External links