BSL7 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) | 1.51633 |
|---|---|
| Abbe Number (Vd) | 64.150145 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.26977 - 0.00963952\,\lambda^2 + 0.0110255\,\lambda^{-2} + 7.94651 \times 10^{-5}\,\lambda^{-4} + 1.0121 \times 10^{-5}\,\lambda^{-6} - 4.40967 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.4 |
|---|---|
| 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 | |
|---|---|---|---|---|
| BK7HT | Schott | 1.51633 | 64.14348 | |
| K-BK7 | Sumita | 1.51633 | 64.1 | |
| BK7 | Sumita | 1.51633 | 64.1 | |
| BK7 | Schott | 1.5168 | 64.167336 | |
| N-BK7HTSultra | Schott | 1.5168 | 64.17 | |
| N-BK7HT | Schott | 1.5168 | 64.17 | |
| N-BK7HTi | Schott | 1.5168 | 64.17 | |
| N-BK7 | Schott | 1.5168 | 64.17 | |
| H-K9LAGT | CDGM | 1.5168 | 64.198695 | |
| H-K9LA | CDGM | 1.5168 | 64.198695 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-BSL7 | Ohara | 1.51633 | 64.142022 | |
| L-BSL7 | Ohara | 1.51633 | 64.065129 | |
| BSL7Y | Ohara | 1.51633 | 64.243778 | |
| S-BSL7R | Ohara | 1.51633 | 63.881689 | |
| BSL22 | Ohara | 1.518206 | 65.039654 | |
| BSL1 | Ohara | 1.510091 | 63.635037 | |
| BSL3 | Ohara | 1.498308 | 65.026785 | |
| BSL21 | Ohara | 1.503779 | 66.814545 | |
| NSL7 | Ohara | 1.511121 | 60.485793 | |
| S-NSL5 | Ohara | 1.522494 | 59.835417 |