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Optical constants of OHARA - BAL (Barium, low-index)
S-BAL11

Wavelength: µm
 (0.32 – 2.4)  
 

Derived optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{0.821314256λ^2}{λ^2-0.00351436131}+\frac{0.612586478λ^2}{λ^2-0.0179762375}+\frac{1.24859637λ^2}{λ^2-133.45667}$$

Conditions & Spec sheet

n_is_absolute: false
λ_is_vacuum: false
temperature: 25.0 °C
coefficients_of_thermal_dispersion: 3.44e-06 1.26e-08 -4.45e-11 5.04e-07 6.25e-10 0.192
n_d: 1.572501
V_d: 57.742980
glass_code: 573578
glass_status: special
density: 3.02 g/cm3
coefficient_of_thermal_expansion_1: 6.6e-06 K-1
coefficient_of_thermal_expansion_2: 8e-06 K-1
ΔP_gF: -0.0024
climatic_resistance: 2.0
acid_resistance: 2.0
phosphate_resistance: 1.0

Comments

Recommended

References

OHARA Zemax catalog 2017-11-30 (obtained from http://www.ohara-inc.co.jp)
See also OHARA 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

Ohara Group

Ohara Group is an international group of companies with headquarters in Japan and subsidiaries in Japan (Ohara, Inc.), United States (Ohara Corporation), and Germany (Ohara, GmbH). Ohara manufactures optical and electronic products and also offers measurement services, in particular measurement of refractive indices of solids and liquids.

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Glass

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