BSM71 by Ohara
Obsolete
Unknown
Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
No transmission data available.
Optical Properties
| Refractive Index (nd) | 1.648497 |
|---|---|
| Abbe Number (Vd) | 53.035185 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.66546 - 0.00936665\,\lambda^2 + 0.0184581\,\lambda^{-2} + 0.000161625\,\lambda^{-4} + 2.09079 \times 10^{-5}\,\lambda^{-6} - 1.36173 \times 10^{-7}\,\lambda^{-8}}$$
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 | |
|---|---|---|---|---|
| BACED20 | Hoya | 1.648498 | 53.03151 | |
| E-BACED20 | Hoya | 1.6485 | 53.03 | |
| SSKN1 | Sumita | 1.6485 | 53.0 | |
| K-LaKn11 | Sumita | 1.6583 | 53.4 | |
| LAKN11 | Sumita | 1.6583 | 53.4 | |
| H-ZBAF3 | CDGM | 1.65691 | 51.12138 | |
| LACL3 | Hoya | 1.664798 | 53.401295 | |
| C58-51 | Corning | 1.658503 | 51.012014 | |
| MP-PCD55AR | Hoya | 1.63858 | 55.18 | |
| M-PCD55AR | Hoya | 1.63858 | 55.18 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-BSM71 | Ohara | 1.648498 | 53.023881 | |
| S-BSM25 | Ohara | 1.658441 | 50.877554 | |
| BSM25 | Ohara | 1.658441 | 50.861723 | |
| S-BSM18 | Ohara | 1.638539 | 55.380028 | |
| BSM18 | Ohara | 1.638539 | 55.384768 | |
| LAL54 | Ohara | 1.650996 | 56.154774 | |
| S-LAL54 | Ohara | 1.650996 | 56.163717 | |
| S-LAL54Q | Ohara | 1.651 | 56.238379 | |
| S-BSM22 | Ohara | 1.622296 | 53.169067 | |
| BSM22 | Ohara | 1.622296 | 53.186644 |