FDS24-W by Hoya
Preferred
Very Common
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) | 1.92119 |
|---|---|
| Abbe Number (Vd) | 23.96 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{3.51263 - 0.0153015\,\lambda^2 + 0.0539361\,\lambda^{-2} + 0.00349494\,\lambda^{-4} - 0.000179503\,\lambda^{-6} + 3.44032 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 7.8 |
|---|---|
| TCE 100/300°C (10-6/K) | 9.6 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-3.37 \times 10^{-6} + 2(7.78 \times 10^{-9})\,\Delta T + 3(-2.33 \times 10^{-11})\,\Delta T^2 + \frac{1.13 \times 10^{-6} + 2(1.32 \times 10^{-9})\,\Delta T}{\lambda - 0.275}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.84 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 1 |
| Acid Resistance | 1 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
Recommended glass type
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| K-PSFn5 | Sumita | 1.9211 | 22.4 | |
| K-PSFn5(M) | Sumita | 1.91643 | 22.4 | |
| SF58 | Schott | 1.917613 | 21.51112 | |
| REALVIEW_1.9_LIGHTWEIGHT | Schott | 1.922002 | 21.44 | |
| PBH71 | Ohara | 1.922864 | 21.288699 | |
| L-NBH54 | Ohara | 1.902 | 25.101413 | |
| PBH72 | Ohara | 1.915356 | 21.171926 | |
| PBH21 | Ohara | 1.922861 | 20.884172 | |
| N-SF66 | Schott | 1.92286 | 20.88 | |
| SF66 | Schott | 1.92286 | 20.88 |