NBFD6 by Hoya
Obsolete
Unknown
Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
No transmission data available.
Optical Properties
| Refractive Index (nd) | 1.756702 |
|---|---|
| Abbe Number (Vd) | 36.345258 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.334 — 2.325 µm |
$$n(\lambda) = \sqrt{2.9882 - 0.00711928\,\lambda^2 + 0.033239\,\lambda^{-2} + 0.000204853\,\lambda^{-4} + 9.22526 \times 10^{-5}\,\lambda^{-6} + 2.44433 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | — |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | — |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-LAFL5 | CDGM | 1.75367 | 37.491665 | |
| S-NBH51 | Ohara | 1.749504 | 35.33248 | |
| S-NBH59 | Ohara | 1.766342 | 35.82343 | |
| S-LAM7 | Ohara | 1.749497 | 35.283397 | |
| LAM7 | Ohara | 1.749497 | 35.278026 | |
| LAF70 | Sumita | 1.7495 | 35.0 | |
| H-LAF4GT | CDGM | 1.7495 | 34.989266 | |
| H-LAF4 | CDGM | 1.7495 | 34.989266 | |
| LAFN7 | Schott | 1.7495 | 34.95 | |
| N-LAF7 | Schott | 1.7495 | 34.82 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LAF7 | Hoya | 1.749497 | 35.042695 | |
| E-LAF7 | Hoya | 1.7495 | 35.04 | |
| NBFD7 | Hoya | 1.782999 | 36.06621 | |
| NBFD5 | Hoya | 1.762001 | 40.263213 | |
| NBFD9 | Hoya | 1.756898 | 31.798532 | |
| BAFD8 | Hoya | 1.72342 | 37.99 | |
| ADF505 | Hoya | 1.739996 | 31.655919 | |
| MP-LAF81 | Hoya | 1.73077 | 40.5 | |
| M-LAF81 | Hoya | 1.73077 | 40.5 | |
| NBFD32 | Hoya | 1.73037 | 32.23 |