K-VC79(M) by Sumita
Standard
Very Common
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) | 1.60737 |
|---|---|
| Abbe Number (Vd) | 57.2 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36 — 1.55 µm |
$$n(\lambda) = \sqrt{2.54195 - 0.0112447\,\lambda^2 + 0.0147237\,\lambda^{-2} + 0.000428257\,\lambda^{-4} - 3.39332 \times 10^{-5}\,\lambda^{-6} + 2.21292 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.2 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.3 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[5.06 \times 10^{-7} + 2(1.46 \times 10^{-8})\,\Delta T + 3(-2.13 \times 10^{-11})\,\Delta T^2 + \frac{4.85 \times 10^{-7} + 2(4.45 \times 10^{-11})\,\Delta T}{\lambda - 0.187}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.09 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| S-BSM2 | Ohara | 1.607379 | 56.816076 | |
| BSM2 | Ohara | 1.607379 | 56.815789 | |
| BACD2 | Hoya | 1.60738 | 56.72 | |
| H-ZK50GT | CDGM | 1.60738 | 56.654511 | |
| H-ZK50 | CDGM | 1.60738 | 56.654511 | |
| SK2 | Schott | 1.607381 | 56.650108 | |
| N-SK2HT | Schott | 1.60738 | 56.65 | |
| N-SK2 | Schott | 1.60738 | 56.65 | |
| C07-57 | Corning | 1.607504 | 56.610495 | |
| SK1 | Schott | 1.61025 | 56.712386 |