S-FTM16 by Ohara
Standard
Common
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) | 1.592701 |
|---|---|
| Abbe Number (Vd) | 35.310075 |
| Dispersion Formula | Sellmeier |
| Wavelength Range | 0.365015 — 2.32542 µm |
$$n(\lambda) = \sqrt{1 + \frac{1.32941\,\lambda^2}{\lambda^2 - 0.0102377} + \frac{0.141512\,\lambda^2}{\lambda^2 - 0.0578082} + \frac{1.44299\,\lambda^2}{\lambda^2 - 150.597}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 9.0 |
|---|---|
| TCE 100/300°C (10-6/K) | — |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-5.29 \times 10^{-6} + 2(1.4 \times 10^{-8})\,\Delta T + 3(-4.19 \times 10^{-11})\,\Delta T^2 + \frac{6.9 \times 10^{-7} + 2(8.13 \times 10^{-10})\,\Delta T}{\lambda - 0.287}\right]
\Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 2.64 |
|---|---|
| Relative Cost | 2.0 |
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 | 2 |
Notes
Recommended
Similar Glasses (Other Manufacturers)
Similar Glasses (Ohara)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| FTM16 | Ohara | 1.592701 | 35.296315 | |
| PBM5 | Ohara | 1.60342 | 38.012915 | |
| S-TIM5 | Ohara | 1.60342 | 38.027347 | |
| PBM3 | Ohara | 1.612929 | 36.994096 | |
| S-TIM3 | Ohara | 1.612929 | 37.005342 | |
| PBM18Y | Ohara | 1.595509 | 38.767114 | |
| PBM4 | Ohara | 1.616588 | 36.632973 | |
| PBM2 | Ohara | 1.620041 | 36.256658 | |
| S-TIM2 | Ohara | 1.620041 | 36.263378 | |
| PBM2Y | Ohara | 1.620041 | 36.269263 |