D85-25 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) | 1.784752 |
|---|---|
| Abbe Number (Vd) | 25.799504 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.38 — 1.8 µm |
$$n(\lambda) = \sqrt{3.05721 - 0.0128024\,\lambda^2 + 0.0366559\,\lambda^{-2} + 0.00389725\,\lambda^{-4} - 0.00037245\,\lambda^{-6} + 3.86482 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.1 |
|---|---|
| TCE 100/300°C (10-6/K) | 6.9 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.9 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.74 |
|---|---|
| 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 | |
|---|---|---|---|---|
| SF11 | Schott | 1.78472 | 25.76 | |
| ZF13 | CDGM | 1.784724 | 25.754051 | |
| H-ZF13GT | CDGM | 1.78472 | 25.720045 | |
| H-ZF13 | CDGM | 1.78472 | 25.720045 | |
| FD110 | Hoya | 1.78472 | 25.72 | |
| PBH11 | Ohara | 1.784718 | 25.712726 | |
| PBH11W | Ohara | 1.784718 | 25.712726 | |
| FD11 | Hoya | 1.784715 | 25.704276 | |
| SF11W | Sumita | 1.78472 | 25.7 | |
| SF11 | Sumita | 1.78472 | 25.7 |
Similar Glasses (Corning)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| D85-26 | Corning | 1.784994 | 25.902085 | |
| E05-25 | Corning | 1.805093 | 25.506125 | |
| D62-27 | Corning | 1.761802 | 26.90455 | |
| D56-27 | Corning | 1.755203 | 27.591377 | |
| D40-28 | Corning | 1.740001 | 28.102623 | |
| D34-26 | Corning | 1.73402 | 26.500794 | |
| D28-28 | Corning | 1.728304 | 28.397796 | |
| E37-30 | Corning | 1.836406 | 30.205692 | |
| D17-29 | Corning | 1.717409 | 29.492751 | |
| C99-30 | Corning | 1.699002 | 30.107427 |