H-ZLAF69A by CDGM
Preferred
Common
Environmentally Friendly
H-ZLAF69A by CDGM is a preferred optical glass with a common melt frequency. It transmits from 0.32 to 2.40 µm with an nd of 1.816 and a Vd of 46.556066. It has low thermal expansion (CTE of 6.4×10⁻⁶/K), excellent chemical resistance, and high relative cost.
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Optical Properties
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.4 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.8 |
| Thermal Conductivity (W/mK) | 0.654 |
| Heat Capacity (J/gK) | 0.396 |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.27 \times 10^{-6} + 2(1.3 \times 10^{-8})\,\Delta T + 3(-2.95 \times 10^{-11})\,\Delta T^2 + \frac{6.42 \times 10^{-7} + 2(8.08 \times 10^{-10})\,\Delta T}{\lambda - 0.182}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Mechanical Properties
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | Compare |
|---|---|---|---|---|
| H-ZLAF69 | CDGM | 1.816 | 46.5493 | |
| H-ZLAF50E | CDGM | 1.804 | 46.574487 | |
| H-ZLAF50D | CDGM | 1.804 | 46.575016 | |
| H-ZLAF2A | CDGM | 1.80279 | 46.761307 | |
| D-ZLAF50 | CDGM | 1.80337 | 45.491557 | |
| D-ZLAF50-25 | CDGM | 1.80225 | 45.452746 | |
| H-ZLAF1 | CDGM | 1.80166 | 44.263459 | |
| H-LAF10LA | CDGM | 1.788 | 47.491731 | |
| D-ZLAF61 | CDGM | 1.82241 | 42.714541 | |
| D-ZLAF61-25 | CDGM | 1.82131 | 42.674895 |