C90-50 by Corning
Standard
Unknown
Environmentally Friendly
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) | 1.689009 |
|---|---|
| Abbe Number (Vd) | 49.625392 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.79279 - 0.0100483\,\lambda^2 + 0.0205042\,\lambda^{-2} + 0.000511249\,\lambda^{-4} - 1.38928 \times 10^{-5}\,\lambda^{-6} + 1.20182 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.2 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.4 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.66 |
|---|---|
| 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 | |
|---|---|---|---|---|
| LAFN23 | Schott | 1.689004 | 49.711581 | |
| LAFL23 | Hoya | 1.689 | 49.475821 | |
| LAFL1 | Hoya | 1.686004 | 49.347081 | |
| LAFN1 | Sumita | 1.685 | 49.2 | |
| H-LAF1 | CDGM | 1.69362 | 49.193837 | |
| LAKN10 | Sumita | 1.692 | 50.6 | |
| LACL5 | Hoya | 1.693503 | 50.787122 | |
| LAL58 | Ohara | 1.693495 | 50.807634 | |
| S-LAL58 | Ohara | 1.693495 | 50.810652 | |
| LAM59 | Ohara | 1.697002 | 48.535864 |
Similar Glasses (Corning)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| C67-48 | Corning | 1.666698 | 48.434395 | |
| C70-47 | Corning | 1.670005 | 47.112037 | |
| D17-48 | Corning | 1.717011 | 47.998493 | |
| D20-50 | Corning | 1.720003 | 50.312121 | |
| C58-51 | Corning | 1.658503 | 51.012014 | |
| C90-55 | Corning | 1.691008 | 54.793839 | |
| D13-54 | Corning | 1.713 | 53.843096 | |
| C97-55 | Corning | 1.697005 | 55.409848 | |
| C78-56 | Corning | 1.678004 | 55.519168 | |
| D34-51 | Corning | 1.733513 | 51.387663 |