K-CD45(M) by Sumita
Standard
Medium
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) | 1.68673 |
|---|---|
| Abbe Number (Vd) | 34.1 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.4 — 1.55 µm |
$$n(\lambda) = \sqrt{2.76185 - 0.0113876\,\lambda^2 + 0.0268191\,\lambda^{-2} + 0.0011728\,\lambda^{-4} - 3.97519 \times 10^{-5}\,\lambda^{-6} + 8.24398 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.1 |
|---|---|
| TCE 100/300°C (10-6/K) | 12.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-4.77 \times 10^{-6} + 2(1.49 \times 10^{-8})\,\Delta T + 3(-1.38 \times 10^{-10})\,\Delta T^2 + \frac{7.8 \times 10^{-7} + 2(7.44 \times 10^{-10})\,\Delta T}{\lambda - 0.271}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.13 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| CSBR | Generic IR | 1.69706 | 34.108015 | |
| BAFD14 | Hoya | 1.699678 | 34.925493 | |
| KZFS12 | Schott | 1.696 | 36.29 | |
| C72-32 | Corning | 1.672698 | 32.31788 | |
| N-SF5 | Schott | 1.67271 | 32.25 | |
| SF5 | Schott | 1.6727 | 32.21 | |
| ZF2 | CDGM | 1.672707 | 32.180986 | |
| FD5 | Hoya | 1.672701 | 32.173263 | |
| H-ZF2 | CDGM | 1.6727 | 32.171186 | |
| E-FD5 | Hoya | 1.6727 | 32.17 |