A87-84 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) | 1.486561 |
|---|---|
| Abbe Number (Vd) | 84.473232 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.29 — 1.8 µm |
$$n(\lambda) = \sqrt{2.18833 - 0.00536588\,\lambda^2 + 0.00774366\,\lambda^{-2} + 0.000131293\,\lambda^{-4} - 7.41795 \times 10^{-6}\,\lambda^{-6} + 4.58151 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 14.8 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.8 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.63 |
|---|---|
| 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 | |
|---|---|---|---|---|
| ULTRAN20 | Schott | 1.486561 | 84.473976 | |
| N-FK51 | Schott | 1.48656 | 84.47 | |
| N-FK51A | Schott | 1.48656 | 84.47 | |
| FK51 | Schott | 1.486561 | 84.467994 | |
| K-PFK85(M) | Sumita | 1.48375 | 85.0 | |
| PFK85 | Sumita | 1.48563 | 85.2 | |
| K-PFK85 | Sumita | 1.48563 | 85.2 | |
| FCD915 | Hoya | 1.48071 | 85.29 | |
| FK52 | Schott | 1.486052 | 81.802215 | |
| N-PK52 | Schott | 1.497005 | 81.633263 |
Similar Glasses (Corning)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| A86-82 | Corning | 1.486052 | 81.814538 | |
| B29-77 | Corning | 1.528554 | 76.961514 | |
| B42-73 | Corning | 1.542198 | 73.473057 | |
| A87-70 | Corning | 1.487248 | 70.500557 | |
| B58-72 | Corning | 1.558086 | 71.998499 | |
| C79-80 | Corning | 1.458467 | 67.795012 | |
| A88-66 | Corning | 1.487502 | 65.807152 | |
| A63-65 | Corning | 1.464501 | 65.763211 | |
| B52-67 | Corning | 1.552198 | 67.059229 | |
| B18-65 | Corning | 1.518199 | 65.115452 |