PBH53W 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) | 1.846658 |
|---|---|
| Abbe Number (Vd) | 23.885544 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.3 — 2.4 µm |
$$n(\lambda) = \sqrt{3.24989 - 0.0104664\,\lambda^2 + 0.0480007\,\lambda^{-2} + 0.00318599\,\lambda^{-4} - 0.000154474\,\lambda^{-6} + 2.62587 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.8 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.7 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.722 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 5.53 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | — |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 52 |
| Alkali Resistance | — |
| Phosphate Resistance | 3 |
Notes
Improved Transmittance
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| SFLDN3 | Sumita | 1.84666 | 23.9 | |
| SFN3 | Sumita | 1.84666 | 23.9 | |
| FDS90-SGP | Hoya | 1.84666 | 23.84 | |
| SF57HTultra | Schott | 1.84666 | 23.83 | |
| SF57HT | Schott | 1.84666 | 23.83 | |
| SF57 | Schott | 1.84666 | 23.83 | |
| ZF52 | CDGM | 1.846669 | 23.827549 | |
| FDS9 | Hoya | 1.846658 | 23.826345 | |
| K-SFLDn3 | Sumita | 1.8467 | 23.8 | |
| K-SFLDn3W | Sumita | 1.8467 | 23.8 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| PBH53 | Ohara | 1.846658 | 23.885544 | |
| S-NPH53 | Ohara | 1.84666 | 23.88395 | |
| TIH53 | Ohara | 1.846659 | 23.780116 | |
| S-TIH53W | Ohara | 1.84666 | 23.77794 | |
| S-TIH53 | Ohara | 1.84666 | 23.77794 | |
| L-TIH53 | Ohara | 1.84666 | 23.773536 | |
| PBH55 | Ohara | 1.84986 | 24.054274 | |
| PBH56 | Ohara | 1.84139 | 24.559059 | |
| S-NBH56 | Ohara | 1.854779 | 24.79898 | |
| S-NPH5 | Ohara | 1.858955 | 22.728736 |