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Optical constants of SCHOTT - BaK (Barium crown)
N-BAK4HT

Wavelength: µm
 (0.334 – 2.5)  
 

Other optical constants

n   k   logX   logY   eV

Dispersion formula [ i ]

$$n^2-1=\frac{1.28834642λ^2}{λ^2-0.00779980626}+\frac{0.132817724λ^2}{λ^2-0.0315631177}+\frac{0.945395373λ^2}{λ^2-105.965875}$$

Data

[Expressions for n]   [CSV - comma separated]   [TXT - tab separated]   [Full database record]

Additional information

n_is_absolute: false
λ_is_vacuum: false
temperature: 20.0 °C
coefficients_of_thermal_dispersion: 3.06e-06 1.44e-08 -2.23e-11 5.46e-07 6.05e-10 0.189
n_d: 1.56883
V_d: 55.98
glass_code: 569560.305
glass_status: standard
density: 3.046 g/cm3
coefficient_of_thermal_expansion_1: 6.99e-06 K-1
coefficient_of_thermal_expansion_2: 7.93e-06 K-1
ΔP_gF: -0.001
climatic_resistance: 1.0
stain_resistance: 0.0
acid_resistance: 1.2
alkali_resistance: 1.0
phosphate_resistance: 1.0

References

1) SCHOTT optical glass data sheets 2015-07-22
2) SCHOTT Zemax catalog 2015-07-22

More info - wiki

SCHOTT AG is a German glass manufacturer. SCHOTT also publishes a glass catalog (SCHOTT Optical Glass Datasheets), which is a standard reference for the properties of many optical glasses.

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