B81-41 by Corning
Standard
Unknown
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) | 1.581396 |
|---|---|
| Abbe Number (Vd) | 40.816116 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.31 — 1.8 µm |
$$n(\lambda) = \sqrt{2.44338 - 0.00822533\,\lambda^2 + 0.0195871\,\lambda^{-2} + 0.000333601\,\lambda^{-4} + 2.89971 \times 10^{-5}\,\lambda^{-6} + 4.21658 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.0 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.7 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.23 |
|---|---|
| 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 | |
|---|---|---|---|---|
| LF5 | Sumita | 1.58144 | 40.8 | |
| N-LF5 | Schott | 1.58144 | 40.848909 | |
| LF5 | Schott | 1.58144 | 40.85 | |
| PBL35Y | Ohara | 1.581591 | 40.855991 | |
| PBL25Y | Ohara | 1.581439 | 40.768047 | |
| PBL25 | Ohara | 1.581439 | 40.753351 | |
| S-TIL25 | Ohara | 1.581439 | 40.747566 | |
| H-QF50A | CDGM | 1.58144 | 40.746424 | |
| QF50GTI | CDGM | 1.58144 | 40.885954 | |
| QF50 | CDGM | 1.58144 | 40.885954 |
Similar Glasses (Corning)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| C04-38 | Corning | 1.603499 | 38.110538 | |
| C06-44 | Corning | 1.605608 | 43.942859 | |
| C13-44 | Corning | 1.613394 | 44.386543 | |
| C16-44 | Corning | 1.616002 | 44.416477 | |
| B48-46 | Corning | 1.548098 | 45.718533 | |
| C20-36 | Corning | 1.62001 | 36.30126 | |
| C38-42 | Corning | 1.637752 | 42.433862 | |
| C26-36 | Corning | 1.625903 | 35.60701 | |
| C24-47 | Corning | 1.624 | 46.940278 | |
| C37-35 | Corning | 1.636493 | 35.322642 |