K-PSFn1 by Sumita
Standard
Common
Precision Molding
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) | 1.9068 |
|---|---|
| Abbe Number (Vd) | 21.2 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.4 — 1.55 µm |
$$n(\lambda) = \sqrt{3.44076 - 0.0157506\,\lambda^2 + 0.0590242\,\lambda^{-2} + 0.00356476\,\lambda^{-4} - 0.000126411\,\lambda^{-6} + 4.03092 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.4 |
|---|---|
| TCE 100/300°C (10-6/K) | 10.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-3.11 \times 10^{-6} + 2(1.75 \times 10^{-8})\,\Delta T + 3(-2.81 \times 10^{-10})\,\Delta T^2 + \frac{1.25 \times 10^{-6} + 2(1.62 \times 10^{-9})\,\Delta T}{\lambda - 0.307}\right]
\Delta T = T - T_0, \quad T_0 = 20\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.15 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | — |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| P-SF67 | Schott | 1.9068 | 21.4 | |
| PBH72 | Ohara | 1.915356 | 21.171926 | |
| SF58 | Schott | 1.917613 | 21.51112 | |
| S-NPH4 | Ohara | 1.89286 | 20.36181 | |
| REALVIEW_1.9_LIGHTWEIGHT | Schott | 1.922002 | 21.44 | |
| PBH71 | Ohara | 1.922864 | 21.288699 | |
| FDS1 | Hoya | 1.922859 | 20.883457 | |
| PBH21 | Ohara | 1.922861 | 20.884172 | |
| E-FDS1-W | Hoya | 1.92286 | 20.88 | |
| SF66 | Schott | 1.92286 | 20.88 |
Similar Glasses (Sumita)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| K-PSFn190 | Sumita | 1.9046 | 21.5 | |
| K-PSFn1(M) | Sumita | 1.89945 | 21.3 | |
| K-PSFn190(M) | Sumita | 1.89816 | 21.7 | |
| K-PSFn5(M) | Sumita | 1.91643 | 22.4 | |
| K-PSFn5 | Sumita | 1.9211 | 22.4 | |
| K-SFLDn3W | Sumita | 1.8467 | 23.8 | |
| K-SFLDn3 | Sumita | 1.8467 | 23.8 | |
| SFN3 | Sumita | 1.84666 | 23.9 | |
| SFLDN3 | Sumita | 1.84666 | 23.9 | |
| K-PSFn4 | Sumita | 1.844 | 24.8 |