BAM4 by Ohara

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.365–0.9 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.365–0.9 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.370–0.900 µm
Optical Properties
Refractive Index (nd) 1.60562
Abbe Number (Vd) 43.723021
Dispersion Formula Schott
Wavelength Range 0.365 — 0.9 µm
$$n(\lambda) = \sqrt{2.52147 - 0.00799131\,\lambda^2 + 0.0189192\,\lambda^{-2} + 0.000549235\,\lambda^{-4} - 1.15079 \times 10^{-5}\,\lambda^{-6} + 2.50583 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 8.0
TCE 100/300°C (10-6/K) 9.0
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[5.7294 \times 10^{-7} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) 3.5
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
N-BAF4 Schott 1.60568 43.72
H-BAF5 CDGM 1.60562 43.875621
BAF4 Hoya 1.60562 43.87626
BAF5 CDGM 1.605623 43.890292
BAF4 Sumita 1.60562 43.9
BAF4 Schott 1.605621 43.929699
C06-44 Corning 1.605608 43.942859
M-BAF41 Hoya 1.605777 43.98709
TF3 CDGM 1.612423 44.093486
KZFS4 Sumita 1.6134 43.8
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-BAM4 Ohara 1.60562 43.706978
BPM4 Ohara 1.6134 43.841533
BPM51 Ohara 1.613397 44.266767
S-NBM51 Ohara 1.613397 44.267706
BAM25 Ohara 1.60323 42.320943
PBL22 Ohara 1.589206 41.07921
S-NBM52 Ohara 1.622049 41.079324
BAM23 Ohara 1.607167 40.26316
BAM3 Ohara 1.582673 46.423092
S-BAM3 Ohara 1.582673 46.423175
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