BAFN1 by Sumita

Obsolete Very Rare Environmentally Dangerous

BAFN1 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 1.6825 and a Vd of 44.5. It has average 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) 1.6825
Abbe Number (Vd) 44.5
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.76752 - 0.0103674\,\lambda^2 + 0.0201513\,\lambda^{-2} + 0.0012573\,\lambda^{-4} - 0.000105961\,\lambda^{-6} + 7.50203 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 8.6
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) 3.98
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance —
Acid Resistance 4
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd Compare
BAF50 Schott 1.682726 44.503507
ZBAF51 CDGM 1.682726 44.528543
BAF22 Hoya 1.682496 44.671672
IRG11 Generic IR 1.680932 44.434326
BAF20 Hoya 1.685777 43.901833
ADF8 Hoya 1.686498 42.863902
BAF13 Hoya 1.668916 44.911265
BAF13 Schott 1.668919 44.961828
BAH13 Ohara 1.668921 44.987354
BAH54 Ohara 1.695 42.167111
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
K-BaFn1 Sumita 1.6825 44.5
BAF13 Sumita 1.66892 45.0
BAF10 Sumita 1.67003 47.2
BASF6 Sumita 1.66755 41.9
K-LCV93 Sumita 1.6652 47.3
K-LCV93(M) Sumita 1.66355 47.2
LAFN3 Sumita 1.7 48.0
K-LaFn3 Sumita 1.7 48.0
BASF7 Sumita 1.70154 41.1
BAF11 Sumita 1.66672 48.4
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