D-LAF050 by CDGM
Preferred
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) | 1.76842 |
|---|---|
| Abbe Number (Vd) | 49.28216 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.302 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{0.65325\,\lambda^2}{\lambda^2 - 0.0236443} + \frac{1.20558\,\lambda^2}{\lambda^2 - 85.5378} + \frac{1.40454\,\lambda^2}{\lambda^2 - 0.00636401}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.4 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.01 \times 10^{-6} + 2(1.55 \times 10^{-8})\,\Delta T + 3(-3.41 \times 10^{-11})\,\Delta T^2 + \frac{5.74 \times 10^{-7} + 2(4.46 \times 10^{-10})\,\Delta T}{\lambda - 0.215}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.51 |
|---|---|
| Relative Cost | 16.2 |
Mechanical Properties
| Young's Modulus (GPa) | 122.76 |
|---|---|
| Poisson's Ratio | 0.292 |
| Knoop Hardness (kgf/mm²) | 756.0 |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
anneal rate:4℃/h
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| M-TAF101 | Hoya | 1.76802 | 49.24 | |
| MC-TAF101-100 | Hoya | 1.76902 | 49.29 | |
| MP-TAF101-100 | Hoya | 1.76902 | 49.29 | |
| MC-TAF115 | Hoya | 1.77047 | 49.46 | |
| K-LaFK50(M) | Sumita | 1.76831 | 49.7 | |
| L-LAH91 | Ohara | 1.7645 | 49.096913 | |
| MC-TAF1 | Hoya | 1.7725 | 49.46 | |
| M-TAF1 | Hoya | 1.7725 | 49.46 | |
| MP-TAF105 | Hoya | 1.7725 | 49.5 | |
| M-TAF105 | Hoya | 1.7725 | 49.5 |
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| D-LAF050-25 | CDGM | 1.76709 | 49.197491 | |
| H-LAF50B | CDGM | 1.7725 | 49.598996 | |
| D-LAF50-25 | CDGM | 1.77288 | 49.519338 | |
| D-LAF50 | CDGM | 1.774 | 49.590362 | |
| H-LAF6LA | CDGM | 1.757 | 47.711817 | |
| H-LAF10LA | CDGM | 1.788 | 47.491731 | |
| H-LAK3 | CDGM | 1.74693 | 50.950085 | |
| D-LAF53 | CDGM | 1.7433 | 49.325949 | |
| H-LAF53 | CDGM | 1.7433 | 49.221808 | |
| H-LAK53A | CDGM | 1.755 | 52.320574 |