H-LAK51A by CDGM
Preferred
Very Common
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) | 1.6968 |
|---|---|
| Abbe Number (Vd) | 55.526357 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.302 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{0.639399\,\lambda^2}{\lambda^2 - 5.67125 \times 10^{-5}} + \frac{1.18748\,\lambda^2}{\lambda^2 - 0.0158002} + \frac{1.26545\,\lambda^2}{\lambda^2 - 91.0971}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.3 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[8.08 \times 10^{-8} + 2(1.25 \times 10^{-8})\,\Delta T + 3(-7.7 \times 10^{-12})\,\Delta T^2 + \frac{4.99 \times 10^{-7} + 2(6.1 \times 10^{-10})\,\Delta T}{\lambda - 0.161}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.56 |
|---|---|
| Relative Cost | 2.8 |
Mechanical Properties
| Young's Modulus (GPa) | 113.14 |
|---|---|
| Poisson's Ratio | 0.278 |
| Knoop Hardness (kgf/mm²) | 695.0 |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LAL14 | Ohara | 1.696796 | 55.528037 | |
| S-LAL14 | Ohara | 1.696797 | 55.532241 | |
| LAC14 | Hoya | 1.6968 | 55.46 | |
| M-LAC14 | Hoya | 1.6968 | 55.46 | |
| K-LaK14 | Sumita | 1.6968 | 55.6 | |
| LAK14 | Sumita | 1.6968 | 55.6 | |
| MP-LAC14-80 | Hoya | 1.6976 | 55.51 | |
| LAKN14 | Schott | 1.6968 | 55.410215 | |
| N-LAK14 | Schott | 1.6968 | 55.41 | |
| C97-55 | Corning | 1.697005 | 55.409848 |
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-LAK12 | CDGM | 1.6968 | 56.175305 | |
| H-LAK59A | CDGM | 1.691 | 54.815309 | |
| H-LAK2A | CDGM | 1.69211 | 54.539198 | |
| H-LAK6A | CDGM | 1.6935 | 53.380441 | |
| D-LAK6 | CDGM | 1.69384 | 53.128245 | |
| D-LAK6-25 | CDGM | 1.69281 | 53.049215 | |
| H-LAK5A | CDGM | 1.6779 | 55.51497 | |
| D-LAK5 | CDGM | 1.6779 | 54.889665 | |
| H-LAK7A | CDGM | 1.713 | 53.832974 | |
| D-LAK5-25 | CDGM | 1.67686 | 54.805426 |