LAL58 by Ohara
Obsolete
Unknown
Environmentally Friendly
LAL58 by Ohara is an obsolete optical glass. It transmits from 0.33 to 2.40 µm with an nd of 1.693495 and a Vd of 50.807634. It has medium thermal expansion (CTE of 7.8×10⁻⁶/K) and below average chemical resistance.
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Optical Properties
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.8 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.2389 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 53 |
| Alkali Resistance | — |
| Phosphate Resistance | 4 |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| LACL5 | Hoya | 1.693503 | 50.787122 | |
| LAKN10 | Sumita | 1.692 | 50.6 | |
| LAFN23 | Schott | 1.689004 | 49.711581 | |
| C90-50 | Corning | 1.689009 | 49.625392 | |
| LAFL23 | Hoya | 1.689 | 49.475821 | |
| H-LAF1 | CDGM | 1.69362 | 49.193837 | |
| LAFL1 | Hoya | 1.686004 | 49.347081 | |
| LAFN1 | Sumita | 1.685 | 49.2 | |
| H-LAK71 | CDGM | 1.703 | 52.406734 | |
| LAKN8 | Sumita | 1.678 | 50.7 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| S-LAL58 | Ohara | 1.693495 | 50.810652 | |
| S-LAL20 | Ohara | 1.6993 | 51.112184 | |
| S-LAL21 | Ohara | 1.703 | 52.379403 | |
| LAL56 | Ohara | 1.677898 | 50.723364 | |
| S-LAL56 | Ohara | 1.677898 | 50.722184 | |
| L-LAL15 | Ohara | 1.69304 | 52.9306 | |
| LAM59 | Ohara | 1.697002 | 48.535864 | |
| S-LAM59 | Ohara | 1.697002 | 48.516066 | |
| L-LAL13 | Ohara | 1.6935 | 53.185799 | |
| S-LAL13 | Ohara | 1.693501 | 53.205327 |