H-BAK5 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) | 1.56069 |
|---|---|
| Abbe Number (Vd) | 58.344731 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.302 — 2.325 µm |
$$n(\lambda) = \sqrt{1 + \frac{0.858086\,\lambda^2}{\lambda^2 - 101.019} + \frac{0.38007\,\lambda^2}{\lambda^2 - 0.0203677} + \frac{1.01788\,\lambda^2}{\lambda^2 - 0.00564516}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.6 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.8 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.4 \times 10^{-7} + 2(1.75 \times 10^{-8})\,\Delta T + 3(-3.27 \times 10^{-11})\,\Delta T^2 + \frac{5.66 \times 10^{-7} + 2(4.64 \times 10^{-10})\,\Delta T}{\lambda - 0.16}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.01 |
|---|---|
| Relative Cost | 3.3 |
Mechanical Properties
| Young's Modulus (GPa) | 75.39 |
|---|---|
| Poisson's Ratio | 0.243 |
| Knoop Hardness (kgf/mm²) | 542.0 |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| BAC5 | Hoya | 1.556708 | 58.562365 | |
| BAK5 | Schott | 1.556709 | 58.649202 | |
| BAL15Y | Ohara | 1.556711 | 58.679177 | |
| BAL15 | Ohara | 1.556711 | 58.689461 | |
| BAK50 | Schott | 1.567736 | 57.990411 | |
| BAL11 | Ohara | 1.572501 | 57.760854 | |
| S-BAL11 | Ohara | 1.572501 | 57.74298 | |
| K-SKLD300(M) | Sumita | 1.56124 | 60.1 | |
| N-BAK1 | Schott | 1.5725 | 57.55 | |
| BAK1 | Schott | 1.5725 | 57.54931 |
Similar Glasses (CDGM)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-BAK8 | CDGM | 1.5725 | 57.486797 | |
| H-BAK6 | CDGM | 1.56388 | 60.764747 | |
| H-BAK7A | CDGM | 1.568828 | 56.127804 | |
| H-BAK7GT | CDGM | 1.56883 | 56.041308 | |
| H-BAK7 | CDGM | 1.56883 | 56.041308 | |
| D-ZK2-25 | CDGM | 1.58241 | 59.308255 | |
| H-BAK2 | CDGM | 1.53996 | 59.724182 | |
| D-ZK2A-25 | CDGM | 1.58229 | 59.453631 | |
| D-ZK2 | CDGM | 1.58313 | 59.381686 | |
| H-ZK2 | CDGM | 1.58313 | 59.460082 |