E-C3 by Hoya
Standard
Rare
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) | 1.51823 |
|---|---|
| Abbe Number (Vd) | 58.96 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.27255 - 0.00841049\,\lambda^2 + 0.0113068\,\lambda^{-2} + 0.000377823\,\lambda^{-4} - 2.69034 \times 10^{-5}\,\lambda^{-6} + 1.59765 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.9 |
|---|---|
| TCE 100/300°C (10-6/K) | 12.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-3.24608 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.53 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | 1 |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
General glass Type
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| NSL3 | Ohara | 1.518229 | 58.966406 | |
| H-K10 | CDGM | 1.51818 | 58.949331 | |
| K3 | Schott | 1.51823 | 58.976559 | |
| K3 | Sumita | 1.51823 | 59.0 | |
| S-NSL3 | Ohara | 1.518229 | 58.902057 | |
| H-K51 | CDGM | 1.52307 | 58.639792 | |
| B270 | Schott | 1.52308 | 58.571369 | |
| N-K5 | Schott | 1.52249 | 59.48 | |
| H-K50 | CDGM | 1.52249 | 59.480754 | |
| K5 | Schott | 1.522489 | 59.482671 |