S-NSL3 by Ohara
Standard
Medium
Environmentally Friendly
S-NSL3 by Ohara is a standard optical glass with a medium melt frequency. It transmits from 0.32 to 2.40 µm with an nd of 1.518229 and a Vd of 58.902057. It has medium thermal expansion (CTE of 9.0×10⁻⁶/K), excellent chemical resistance, and low relative cost.
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) | 1.518229 |
|---|---|
| Abbe Number (Vd) | 58.902057 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.365015 — 2.32542 µm |
$$n(\lambda) = \sqrt{1 + \frac{0.882515\,\lambda^2}{\lambda^2 - 0.00464505} + \frac{0.389272\,\lambda^2}{\lambda^2 - 0.0200551} + \frac{1.10693\,\lambda^2}{\lambda^2 - 136.234}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.0 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-2.94 \times 10^{-6} + 2(1.06 \times 10^{-8})\,\Delta T + 3(-3.57 \times 10^{-11})\,\Delta T^2 + \frac{4.22 \times 10^{-7} + 2(5.7 \times 10^{-10})\,\Delta T}{\lambda - 0.249}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | 1 |
Notes
Recommended
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| H-K10 | CDGM | 1.51818 | 58.949331 | |
| E-C3 | Hoya | 1.51823 | 58.96 | |
| C3 | Hoya | 1.518234 | 58.96082 | |
| K3 | Schott | 1.51823 | 58.976559 | |
| K3 | Sumita | 1.51823 | 59.0 | |
| H-K51 | CDGM | 1.52307 | 58.639792 | |
| C12 | Hoya | 1.523073 | 58.640203 | |
| B270 | Schott | 1.52308 | 58.571369 | |
| C5 | Hoya | 1.522488 | 59.447258 | |
| N-K5 | Schott | 1.52249 | 59.48 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| NSL3 | Ohara | 1.518229 | 58.966406 | |
| NSL5 | Ohara | 1.522494 | 59.790926 | |
| S-NSL5 | Ohara | 1.522494 | 59.835417 | |
| NSL7 | Ohara | 1.511121 | 60.485793 | |
| S-NSL2 | Ohara | 1.516016 | 56.858179 | |
| NSL2 | Ohara | 1.516016 | 56.800755 | |
| BAL12 | Ohara | 1.539955 | 59.454008 | |
| S-BAL12 | Ohara | 1.539956 | 59.462478 | |
| S-FTL10 | Ohara | 1.501372 | 56.421009 | |
| FTL10 | Ohara | 1.501372 | 56.399833 |