C2 by Hoya
Obsolete
Unknown
Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
No transmission data available.
Optical Properties
| Refractive Index (nd) | 1.51602 |
|---|---|
| Abbe Number (Vd) | 56.771193 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.26517 - 0.00895129\,\lambda^2 + 0.0115571\,\lambda^{-2} + 0.000382382\,\lambda^{-4} - 2.29274 \times 10^{-5}\,\lambda^{-6} + 1.53504 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | — |
|---|---|
| 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 | |
|---|---|---|---|---|
| H-K8 | CDGM | 1.51602 | 56.794825 | |
| NSL2 | Ohara | 1.516016 | 56.800755 | |
| S-NSL2 | Ohara | 1.516016 | 56.858179 | |
| K4 | Schott | 1.518952 | 57.399398 | |
| K5G20 | Schott | 1.52344 | 56.76 | |
| KDP | Generic Birefringent | 1.509182 | 56.224997 | |
| S-FTL10 | Ohara | 1.501372 | 56.421009 | |
| K10 | Schott | 1.50137 | 56.41 | |
| FTL10 | Ohara | 1.501372 | 56.399833 | |
| B270 | Schott | 1.52308 | 58.571369 |