NSL5 by Ohara
Obsolete
Unknown
Environmentally Dangerous
NSL5 by Ohara is an obsolete optical glass. It transmits from 0.34 to 0.90 µm with an nd of 1.522494 and a Vd of 59.790926. It has medium thermal expansion (CTE of 8.2×10⁻⁶/K) and dangerous environmental properties.
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) | 1.522494 |
|---|---|
| Abbe Number (Vd) | 59.790926 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.365 — 0.9 µm |
$$n(\lambda) = \sqrt{2.2843 - 0.00813286\,\lambda^2 + 0.0124095\,\lambda^{-2} - 7.44677 \times 10^{-6}\,\lambda^{-4} + 2.86937 \times 10^{-5}\,\lambda^{-6} - 1.23762 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.2 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.6 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.9066 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| K5 | Sumita | 1.52249 | 59.6 | |
| K5HT | Schott | 1.522453 | 59.530889 | |
| K5 | Schott | 1.522489 | 59.482671 | |
| H-K50 | CDGM | 1.52249 | 59.480754 | |
| N-K5 | Schott | 1.52249 | 59.48 | |
| B23-59 | Corning | 1.522996 | 59.479482 | |
| C5 | Hoya | 1.522488 | 59.447258 | |
| K50 | Schott | 1.522572 | 60.179756 | |
| KN1 | Sumita | 1.524 | 59.3 | |
| UK50 | Schott | 1.522571 | 60.383109 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| S-NSL5 | Ohara | 1.522494 | 59.835417 | |
| NSL3 | Ohara | 1.518229 | 58.966406 | |
| S-NSL3 | Ohara | 1.518229 | 58.902057 | |
| NSL7 | Ohara | 1.511121 | 60.485793 | |
| S-BAL12 | Ohara | 1.539956 | 59.462478 | |
| BAL12 | Ohara | 1.539955 | 59.454008 | |
| S-NSL2 | Ohara | 1.516016 | 56.858179 | |
| NSL2 | Ohara | 1.516016 | 56.800755 | |
| S-BSL7R | Ohara | 1.51633 | 63.881689 | |
| BSL1 | Ohara | 1.510091 | 63.635037 |