B29-77 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) | 1.528554 |
|---|---|
| Abbe Number (Vd) | 76.961514 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.31 — 1.8 µm |
$$n(\lambda) = \sqrt{2.30955 - 0.00570994\,\lambda^2 + 0.0095911\,\lambda^{-2} + 0.000144553\,\lambda^{-4} - 5.14138 \times 10^{-6}\,\lambda^{-6} + 3.59949 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | — |
|---|---|
| TCE 100/300°C (10-6/K) | 13.9 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.7 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.78 |
|---|---|
| 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 | |
|---|---|---|---|---|
| PK51A | Schott | 1.528554 | 76.975515 | |
| N-PK51 | Schott | 1.52855 | 76.98 | |
| S-FPM4 | Ohara | 1.52841 | 76.452824 | |
| S-FPM3 | Ohara | 1.53775 | 74.703119 | |
| FCD705 | Hoya | 1.55032 | 75.5 | |
| H-FK55 | CDGM | 1.5502 | 75.224681 | |
| ULTRAN30 | Schott | 1.5483 | 74.244488 | |
| K-PSK500(M) | Sumita | 1.55 | 71.9 | |
| K-PSK500 | Sumita | 1.55215 | 72.0 | |
| K-PFK80(M) | Sumita | 1.49533 | 80.8 |
Similar Glasses (Corning)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| B42-73 | Corning | 1.542198 | 73.473057 | |
| B58-72 | Corning | 1.558086 | 71.998499 | |
| A86-82 | Corning | 1.486052 | 81.814538 | |
| A87-70 | Corning | 1.487248 | 70.500557 | |
| A87-84 | Corning | 1.486561 | 84.473232 | |
| B52-67 | Corning | 1.552198 | 67.059229 | |
| B18-65 | Corning | 1.518199 | 65.115452 | |
| A88-66 | Corning | 1.487502 | 65.807152 | |
| B16-64 | Corning | 1.516804 | 64.224234 | |
| C79-80 | Corning | 1.458467 | 67.795012 |