D-ZLAF81 by CDGM
Standard
Rare
Precision Molding
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) | 1.8088 |
|---|---|
| Abbe Number (Vd) | 40.999441 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.365 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.88619\,\lambda^2}{\lambda^2 - 0.00991169} + \frac{0.294672\,\lambda^2}{\lambda^2 - 0.0409688} + \frac{1.27989\,\lambda^2}{\lambda^2 - 97.7975}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.4 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.97 \times 10^{-6} + 2(1.47 \times 10^{-8})\,\Delta T + 3(-2.54 \times 10^{-11})\,\Delta T^2 + \frac{9.18 \times 10^{-7} + 2(8.5 \times 10^{-10})\,\Delta T}{\lambda - 0.182}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.55 |
|---|---|
| Relative Cost | 12.3 |
Mechanical Properties
| Young's Modulus (GPa) | 114.05 |
|---|---|
| Poisson's Ratio | 0.286 |
| Knoop Hardness (kgf/mm²) | 668.0 |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
anneal rate:4℃/h
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| MC-NBFD135 | Hoya | 1.80834 | 40.92 | |
| K-VC89 | Sumita | 1.81 | 41.0 | |
| P-LASF51 | Schott | 1.81 | 40.93 | |
| K-VC181 | Sumita | 1.81055 | 41.1 | |
| L-LAH53 | Ohara | 1.806249 | 40.907302 | |
| LAH53 | Ohara | 1.806098 | 40.948508 | |
| S-LAH53V | Ohara | 1.806099 | 40.929791 | |
| S-LAH53 | Ohara | 1.806098 | 40.925996 | |
| K-VC181(M) | Sumita | 1.80614 | 41.1 | |
| P-LASF47 | Schott | 1.8061 | 40.9 |
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| D-ZLAF52LA-25 | CDGM | 1.80882 | 40.970313 | |
| D-ZLAF52LA | CDGM | 1.81 | 40.992863 | |
| D-ZLAF81-25 | CDGM | 1.80757 | 40.97334 | |
| H-ZLAF52A | CDGM | 1.8061 | 41.016887 | |
| H-ZLAF52 | CDGM | 1.806099 | 40.945389 | |
| H-ZLAF51 | CDGM | 1.8045 | 39.635248 | |
| H-LAF54 | CDGM | 1.799519 | 42.253294 | |
| D-ZLAF61-25 | CDGM | 1.82131 | 42.674895 | |
| D-ZLAF61 | CDGM | 1.82241 | 42.714541 | |
| H-ZLAF1 | CDGM | 1.80166 | 44.263459 |