BSM36 by Ohara

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Optical Properties
Refractive Index (nd) 1.642495
Abbe Number (Vd) 58.369399
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.65467 - 0.0128194\,\lambda^2 + 0.0151972\,\lambda^{-2} + 0.000504208\,\lambda^{-4} - 3.49956 \times 10^{-5}\,\lambda^{-6} + 2.04927 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K)
TCE 100/300°C (10-6/K)
Thermal Conductivity (W/mK)
Heat Capacity (J/gK)
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³)
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
LAK6 Sumita 1.6425 58.1
K-LaK6 Sumita 1.6425 58.1
C42-58 Corning 1.642502 58.061633
LAKN6 Schott 1.642499 57.962061
LAC6 Hoya 1.642498 57.959359
LAC7 Hoya 1.6516 58.4
H-LAK50A CDGM 1.6516 58.403057
K-LaK7 Sumita 1.6516 58.3
LAK7 Sumita 1.6516 58.3
C52-58 Corning 1.6516 58.511488
Similar Glasses (Ohara)
Glass Manufacturer nd Vd
S-BSM36 Ohara 1.642495 58.369399
LAL7 Ohara 1.651597 58.519433
S-LAL7Q Ohara 1.6516 58.544459
S-LAL7 Ohara 1.651597 58.550655
BSM93 Ohara 1.640998 56.927542
S-BSM93 Ohara 1.640998 56.927542
S-BSM81 Ohara 1.639999 60.078127
BSM81 Ohara 1.639999 60.091709
S-LAL11 Ohara 1.658296 57.332589
LAL11 Ohara 1.658296 57.332589
Compare Glasses