BAF3 by Sumita

Obsolete Very Rare Environmentally Dangerous

BAF3 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.33 to 2.00 µm with an nd of 1.58267 and a Vd of 46.5. It has excellent chemical resistance and dangerous environmental properties.

Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.27–2.0 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.27–2.0 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.330–2.000 µm
Optical Properties
Refractive Index (nd) 1.58267
Abbe Number (Vd) 46.5
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.46144 - 0.0125597\,\lambda^2 + 0.0130438\,\lambda^{-2} + 0.0015515\,\lambda^{-4} - 0.000152321\,\lambda^{-6} + 9.01144 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 9.6
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.01
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance 1
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAF4 CDGM 1.582712 46.505886
BAF3 Schott 1.58267 46.469988
BAF3 Hoya 1.58267 46.462286
S-BAM3 Ohara 1.582673 46.423175
BAM3 Ohara 1.582673 46.423092
H-BAF4 CDGM 1.58267 46.597786
N-BAF3 Schott 1.58272 46.64
BAFN6 Schott 1.589 48.45
KZFSN9 Schott 1.598557 46.903842
BAF6 Hoya 1.589003 48.543984
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
LLF4 Sumita 1.56138 45.3
K-SKLD310(M) Sumita 1.60132 49.0
K-SKLD310 Sumita 1.6042 48.9
LF1 Sumita 1.57309 42.7
BAF1 Sumita 1.5569 48.5
BAF4 Sumita 1.60562 43.9
LF6 Sumita 1.56732 42.8
BAF5 Sumita 1.60729 49.3
K-LCV161(M) Sumita 1.61477 45.6
LF3 Sumita 1.58215 42.0
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