S-PHM51 by Ohara
Obsolete
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) | 1.617001 |
|---|---|
| Abbe Number (Vd) | 62.800809 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.3 — 2.4 µm |
$$n(\lambda) = \sqrt{2.5759 - 0.0105535\,\lambda^2 + 0.0138959\,\lambda^{-2} + 0.000264983\,\lambda^{-4} - 1.96805 \times 10^{-6}\,\lambda^{-6} + 1.099 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 11.1 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-6.88 \times 10^{-6} + 2(1.5 \times 10^{-8})\,\Delta T + 3(-3.45 \times 10^{-13})\,\Delta T^2 + \frac{8.32 \times 10^{-7} + 2(-2.61 \times 10^{-10})\,\Delta T}{\lambda - 0}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.53 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 2 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 51 |
| Alkali Resistance | — |
| Phosphate Resistance | 4 |
Similar Glasses (Other Manufacturers)
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| PHM51 | Ohara | 1.617001 | 62.800809 | |
| S-PHM52Q | Ohara | 1.617999 | 63.321449 | |
| S-PHM52 | Ohara | 1.618 | 63.333504 | |
| PHM52 | Ohara | 1.617999 | 63.386441 | |
| S-BSM16 | Ohara | 1.620411 | 60.289582 | |
| BSM16 | Ohara | 1.62041 | 60.271913 | |
| BSM16C | Ohara | 1.62041 | 60.254106 | |
| BSM14 | Ohara | 1.603112 | 60.704896 | |
| BSM51Y | Ohara | 1.603109 | 60.651225 | |
| S-BSM14 | Ohara | 1.603112 | 60.64108 |