CD45 by Sumita
Obsolete
Very Rare
Environmentally Dangerous
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) | 1.6932 |
|---|---|
| Abbe Number (Vd) | 33.7 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.27 — 2.0 µm |
$$n(\lambda) = \sqrt{2.78638 - 0.0138937\,\lambda^2 + 0.0237937\,\lambda^{-2} + 0.00249893\,\lambda^{-4} - 0.000247418\,\lambda^{-6} + 2.06971 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 11.0 |
| 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) | 3.12 |
|---|---|
| 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 | |
| N-SF8 | Schott | 1.68894 | 31.31 | |
| P-SF8 | Schott | 1.68893 | 31.25 | |
| C89-31 | Corning | 1.689004 | 31.210861 | |
| ZF10 | CDGM | 1.688934 | 31.184753 | |
| SF8 | Schott | 1.688932 | 31.176063 | |
| H-ZF10 | CDGM | 1.68893 | 31.16057 | |
| MP-FD80 | Hoya | 1.68893 | 31.16 | |
| MC-FD80 | Hoya | 1.68893 | 31.16 |