H-LAF6LA by CDGM
Standard
Rare
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) | 1.757 |
|---|---|
| Abbe Number (Vd) | 47.711817 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.365 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.12024\,\lambda^2}{\lambda^2 - 0.00335767} + \frac{0.897574\,\lambda^2}{\lambda^2 - 0.0227711} + \frac{1.36655\,\lambda^2}{\lambda^2 - 92.0376}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 6.9 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.32 \times 10^{-6} + 2(1.59 \times 10^{-8})\,\Delta T + 3(-1.31 \times 10^{-11})\,\Delta T^2 + \frac{6.18 \times 10^{-7} + 2(3.24 \times 10^{-10})\,\Delta T}{\lambda - 0.187}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.06 |
|---|---|
| Relative Cost | 8.7 |
Mechanical Properties
| Young's Modulus (GPa) | 118.06 |
|---|---|
| Poisson's Ratio | 0.291 |
| Knoop Hardness (kgf/mm²) | 729.0 |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| NBF2 | Hoya | 1.756999 | 47.712499 | |
| LAFN24 | Schott | 1.757191 | 47.81177 | |
| LAM54 | Ohara | 1.756998 | 47.815604 | |
| S-LAM54 | Ohara | 1.756998 | 47.82317 | |
| LAFN8 | Sumita | 1.756 | 47.6 | |
| S-LAH96 | Ohara | 1.76385 | 48.488692 | |
| L-LAH91 | Ohara | 1.7645 | 49.096913 | |
| L-LAH87 | Ohara | 1.7703 | 47.401904 | |
| K-LaFK50T(M) | Sumita | 1.76209 | 49.6 | |
| P-LAF37 | Schott | 1.7555 | 45.66 |
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| D-LAF050-25 | CDGM | 1.76709 | 49.197491 | |
| D-LAF050 | CDGM | 1.76842 | 49.28216 | |
| H-LAF53 | CDGM | 1.7433 | 49.221808 | |
| D-LAF53 | CDGM | 1.7433 | 49.325949 | |
| D-LAF53-25 | CDGM | 1.7421 | 49.246024 | |
| D-LAF50-25 | CDGM | 1.77288 | 49.519338 | |
| H-LAF50B | CDGM | 1.7725 | 49.598996 | |
| D-LAF50 | CDGM | 1.774 | 49.590362 | |
| H-LAF3B | CDGM | 1.744 | 44.900027 | |
| H-LAK3 | CDGM | 1.74693 | 50.950085 |