BSM93 by Ohara

Obsolete Unknown Environmentally Dangerous

BSM93 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.33 µm with an nd of 1.640998 and a Vd of 56.927542. It has dangerous environmental properties.

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.

Transmission Calculator
Valid wavelength range: 0.334–2.325 µm
Optical Properties
Refractive Index (nd) 1.640998
Abbe Number (Vd) 56.927542
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{2.64813 - 0.0115535\,\lambda^2 + 0.0155175\,\lambda^{-2} + 0.000532117\,\lambda^{-4} - 3.39069 \times 10^{-5}\,\lambda^{-6} + 2.09935 \times 10^{-6}\,\lambda^{-8}}$$
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 Compare
LACL1 Hoya 1.640851 56.835319
LAKN13 Sumita 1.641 56.8
LAC6 Hoya 1.642498 57.959359
LAKN6 Schott 1.642499 57.962061
C42-58 Corning 1.642502 58.061633
LAK6 Sumita 1.6425 58.1
K-LaK6 Sumita 1.6425 58.1
C39-56 Corning 1.638505 55.504447
K-SK18RH Sumita 1.63854 55.5
SK18 Sumita 1.63854 55.5
Similar Glasses (Ohara)
Glass Manufacturer nd Vd Compare
S-BSM93 Ohara 1.640998 56.927542
S-BSM36 Ohara 1.642495 58.369399
BSM36 Ohara 1.642495 58.369399
S-LAL54Q Ohara 1.651 56.238379
S-LAL54 Ohara 1.650996 56.163717
LAL54 Ohara 1.650996 56.154774
BSM18 Ohara 1.638539 55.384768
S-BSM18 Ohara 1.638539 55.380028
LAL7 Ohara 1.651597 58.519433
S-LAL7Q Ohara 1.6516 58.544459
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