S-LAM60 by Ohara
Standard
Common
Environmentally Friendly
S-LAM60 by Ohara is a standard optical glass with a common melt frequency. It transmits from 0.33 to 2.40 µm with an nd of 1.743198 and a Vd of 49.339444. It has low thermal expansion (CTE of 5.4×10⁻⁶/K), below average 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) | 1.743198 |
|---|---|
| Abbe Number (Vd) | 49.339444 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.365015 — 2.32542 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.60673\,\lambda^2}{\lambda^2 - 0.00775046} + \frac{0.366416\,\lambda^2}{\lambda^2 - 0.0289968} + \frac{1.31762\,\lambda^2}{\lambda^2 - 93.0721}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.4 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[6.57 \times 10^{-6} + 2(1.45 \times 10^{-8})\,\Delta T + 3(-3.29 \times 10^{-11})\,\Delta T^2 + \frac{4.46 \times 10^{-7} + 2(4.6 \times 10^{-10})\,\Delta T}{\lambda - 0.256}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 52 |
| Alkali Resistance | — |
| Phosphate Resistance | 2 |
Notes
Recommended
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| MP-NBF1 | Hoya | 1.7433 | 49.33 | |
| M-NBF1 | Hoya | 1.7433 | 49.33 | |
| MC-NBF1 | Hoya | 1.7433 | 49.33 | |
| D-LAF53 | CDGM | 1.7433 | 49.325949 | |
| N-LAF35 | Schott | 1.7433 | 49.4 | |
| H-LAF53 | CDGM | 1.7433 | 49.221808 | |
| NBF1 | Hoya | 1.7433 | 49.22 | |
| K-LaFn5 | Sumita | 1.743 | 49.2 | |
| LAFN5 | Sumita | 1.743 | 49.2 | |
| D-LAF53-25 | CDGM | 1.7421 | 49.246024 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| LAM60 | Ohara | 1.743198 | 49.309053 | |
| L-LAM60 | Ohara | 1.743198 | 49.295578 | |
| L-LAM72 | Ohara | 1.733099 | 48.896607 | |
| S-LAM54 | Ohara | 1.756998 | 47.82317 | |
| LAM54 | Ohara | 1.756998 | 47.815604 | |
| S-LAL59 | Ohara | 1.733997 | 51.47057 | |
| LAL59 | Ohara | 1.733997 | 51.488026 | |
| L-LAH91 | Ohara | 1.7645 | 49.096913 | |
| S-LAH96 | Ohara | 1.76385 | 48.488692 | |
| S-LAL10 | Ohara | 1.719995 | 50.230564 |