ZBAF17 by CDGM
Obsolete
Rare
Environmentally Dangerous
ZBAF17 by CDGM is an obsolete optical glass with a rare melt frequency. It transmits from 0.35 to 2.40 µm with an nd of 1.667554 and a Vd of 41.957211. It has medium thermal expansion (CTE of 7.8×10⁻⁶/K), excellent chemical resistance, moderate relative cost, and dangerous environmental properties.
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) | 1.667554 |
|---|---|
| Abbe Number (Vd) | 41.957211 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.365 — 1.014 µm |
$$n(\lambda) = \sqrt{2.71148 - 0.0083031\,\lambda^2 + 0.0237332\,\lambda^{-2} + 0.000281977\,\lambda^{-4} + 3.94099 \times 10^{-5}\,\lambda^{-6} + 7.17563 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.8 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[3.29 \times 10^{-8} + 2(1.54 \times 10^{-8})\,\Delta T + 3(-1.58 \times 10^{-11})\,\Delta T^2 + \frac{7.94 \times 10^{-7} + 2(1.05 \times 10^{-9})\,\Delta T}{\lambda - 0.24}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Mechanical Properties
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| BAFD6 | Hoya | 1.66755 | 41.933458 | |
| BASF6 | Schott | 1.667551 | 41.931404 | |
| BAH26 | Ohara | 1.667551 | 41.927521 | |
| BASF6 | Sumita | 1.66755 | 41.9 | |
| BASF57 | Schott | 1.651474 | 41.901823 | |
| C55-40 | Corning | 1.6555 | 40.115717 | |
| BAH32 | Ohara | 1.669979 | 39.279752 | |
| S-BAH32 | Ohara | 1.669979 | 39.271035 | |
| ADF8 | Hoya | 1.686498 | 42.863902 | |
| BASF12 | Schott | 1.669979 | 39.200523 |
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| H-TF5 | CDGM | 1.6541 | 39.539424 | |
| ZBAF51 | CDGM | 1.682726 | 44.528543 | |
| H-ZBAF20 | CDGM | 1.70154 | 41.148468 | |
| H-ZBAF52 | CDGM | 1.67003 | 47.19506 | |
| H-ZBAF5 | CDGM | 1.67103 | 47.288963 | |
| H-BAF8 | CDGM | 1.62604 | 39.071631 | |
| H-ZBAF16 | CDGM | 1.66672 | 48.421731 | |
| H-ZBAF4 | CDGM | 1.66426 | 35.484251 | |
| H-LAF62 | CDGM | 1.72 | 43.680739 | |
| ZBAF2 | CDGM | 1.639616 | 48.230454 |