PBH3W by Ohara
Obsolete
Unknown
Environmentally Dangerous
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) | 1.739998 |
|---|---|
| Abbe Number (Vd) | 28.287409 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.3 — 2.4 µm |
$$n(\lambda) = \sqrt{2.91577 - 0.0100817\,\lambda^2 + 0.0340989\,\lambda^{-2} + 0.0021965\,\lambda^{-4} - 0.00012387\,\lambda^{-6} + 1.57668 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 8.2 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.163 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.66 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 3 |
| Alkali Resistance | — |
| Phosphate Resistance | 3 |
Notes
Improved Transmittance
Similar Glasses (Other Manufacturers)
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| PBH3 | Ohara | 1.739998 | 28.283809 | |
| S-TIH3 | Ohara | 1.739998 | 28.296005 | |
| PBH13W | Ohara | 1.740769 | 27.793228 | |
| PBH13 | Ohara | 1.740769 | 27.793228 | |
| S-TIH13 | Ohara | 1.740769 | 27.789359 | |
| S-TIH10 | Ohara | 1.72825 | 28.460599 | |
| PBH10 | Ohara | 1.728249 | 28.4623 | |
| PBH4W | Ohara | 1.755199 | 27.512146 | |
| PBH4 | Ohara | 1.755199 | 27.512146 | |
| S-TIH4 | Ohara | 1.755199 | 27.512089 |