BASF3 by Sumita

Obsolete Very Rare Environmentally Dangerous

BASF3 by Sumita is an obsolete optical glass with a very rare melt frequency. It transmits from 0.32 to 2.00 µm with an nd of 1.60717 and a Vd of 40.2. 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: 0.320–2.000 µm
Optical Properties
Refractive Index (nd) 1.60717
Abbe Number (Vd) 40.2
Dispersion Formula Schott
Wavelength Range 0.27 — 2.0 µm
$$n(\lambda) = \sqrt{2.52002 - 0.00745886\,\lambda^2 + 0.0214685\,\lambda^{-2} + 0.000281951\,\lambda^{-4} + 4.04622 \times 10^{-5}\,\lambda^{-6} + 2.02104 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) 9.5
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) 3.49
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
BAM23 Ohara 1.607167 40.26316
BAFD3 Hoya 1.607171 40.359687
BAF7 CDGM 1.614131 40.025731
H-BAF7 CDGM 1.61413 39.985319
LF5G19 Schott 1.59655 39.89
GEO2 Generic IR 1.608459 41.728763
PBM8Y Ohara 1.595509 39.260208
S-TIM8 Ohara 1.595509 39.242273
H-QF14 CDGM 1.59551 39.222748
F8 Hoya 1.595514 39.221686
Similar Glasses (Sumita)
Glass Manufacturer nd Vd Compare
F8 Sumita 1.59551 39.2
F5 Sumita 1.60342 38.0
K-BaSF5 Sumita 1.60323 42.5
BASF5 Sumita 1.60323 42.5
LF2 Sumita 1.58921 41.0
BASF1 Sumita 1.62606 39.1
F9 Sumita 1.62045 38.0
F3 Sumita 1.61293 36.9
LF5 Sumita 1.58144 40.8
KZFS4 Sumita 1.6134 43.8
Compare Glasses
    Compare Selected