PBH23 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) | 1.784702 |
|---|---|
| Abbe Number (Vd) | 26.216753 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.3 — 2.4 µm |
$$n(\lambda) = \sqrt{3.05543 - 0.0108674\,\lambda^2 + 0.0385229\,\lambda^{-2} + 0.0030174\,\lambda^{-4} - 0.000212947\,\lambda^{-6} + 2.48648 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.5 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.7 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[1.457 \times 10^{-5} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.99 |
|---|---|
| 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 |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| SFS3 | Sumita | 1.7847 | 26.2 | |
| FDS30 | Hoya | 1.784701 | 26.102957 | |
| N-SF56 | Schott | 1.7847 | 26.1 | |
| SF56A | Schott | 1.7847 | 26.08 | |
| SFL56 | Schott | 1.7847 | 26.078312 | |
| ZF51 | CDGM | 1.784701 | 26.075871 | |
| FDS3 | Hoya | 1.7847 | 26.057653 | |
| SFLD11 | Sumita | 1.78472 | 25.9 | |
| K-SFLD11 | Sumita | 1.78472 | 25.9 | |
| D85-26 | Corning | 1.784994 | 25.902085 |
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| PBH23W | Ohara | 1.784702 | 26.216753 | |
| S-TIH23 | Ohara | 1.784696 | 26.291221 | |
| TIH23 | Ohara | 1.784696 | 26.29817 | |
| PBH11 | Ohara | 1.784718 | 25.712726 | |
| PBH11W | Ohara | 1.784718 | 25.712726 | |
| S-TIH11 | Ohara | 1.784723 | 25.683446 | |
| TIH11 | Ohara | 1.784723 | 25.677885 | |
| S-NBH58 | Ohara | 1.7888 | 28.42865 | |
| S-NPH7 | Ohara | 1.7783 | 23.911598 | |
| PBH6 | Ohara | 1.805177 | 25.435012 |