BSM15 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
Transmission Calculator
Optical Properties
| Refractive Index (nd) | 1.622992 |
|---|---|
| Abbe Number (Vd) | 58.143312 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.365 — 0.9 µm |
$$n(\lambda) = \sqrt{2.59025 - 0.00988686\,\lambda^2 + 0.0156565\,\lambda^{-2} + 0.000211755\,\lambda^{-4} + 5.76394 \times 10^{-6}\,\lambda^{-6} - 3.13457 \times 10^{-8}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.0 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.6586 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.65 |
|---|---|
| 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 | |
|---|---|---|---|---|
| H-ZK21 | CDGM | 1.62299 | 58.120667 | |
| BACD15 | Hoya | 1.62299 | 58.12 | |
| C23-58 | Corning | 1.623004 | 58.102071 | |
| K-SK15 | Sumita | 1.62299 | 58.1 | |
| SK15 | Sumita | 1.62299 | 58.1 | |
| MP-BACD15 | Hoya | 1.62263 | 58.17 | |
| M-BACD15 | Hoya | 1.62263 | 58.17 | |
| D-ZK21-25 | CDGM | 1.62346 | 58.115078 | |
| SK15 | Schott | 1.62299 | 58.059722 | |
| N-SK15 | Schott | 1.62296 | 58.02 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-BSM15 | Ohara | 1.622992 | 58.165763 | |
| BSM10 | Ohara | 1.622799 | 57.063643 | |
| S-BSM10 | Ohara | 1.622799 | 57.052723 | |
| S-BSM4 | Ohara | 1.612716 | 58.716945 | |
| BSM4 | Ohara | 1.612716 | 58.749129 | |
| BSM16C | Ohara | 1.62041 | 60.254106 | |
| BSM16 | Ohara | 1.62041 | 60.271913 | |
| S-BSM16 | Ohara | 1.620411 | 60.289582 | |
| BSM6 | Ohara | 1.613749 | 56.365919 | |
| BSM7 | Ohara | 1.607291 | 59.375631 |