FCD915 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) | 1.48071 |
|---|---|
| Abbe Number (Vd) | 85.29 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.17157 - 0.00535385\,\lambda^2 + 0.00756385\,\lambda^{-2} + 0.000113646\,\lambda^{-4} - 4.43301 \times 10^{-6}\,\lambda^{-6} + 2.59428 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 12.9 |
|---|---|
| TCE 100/300°C (10-6/K) | 15.7 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[-1.89 \times 10^{-5} + 2(-2.67 \times 10^{-9})\,\Delta T + 3(-4.12 \times 10^{-12})\,\Delta T^2 + \frac{2.72 \times 10^{-7} + 2(-2.8 \times 10^{-10})\,\Delta T}{\lambda - 0.244}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.68 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 3 |
| Acid Resistance | 2 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
Recommended glass type
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| K-PFK85(M) | Sumita | 1.48375 | 85.0 | |
| PFK85 | Sumita | 1.48563 | 85.2 | |
| K-PFK85 | Sumita | 1.48563 | 85.2 | |
| ULTRAN20 | Schott | 1.486561 | 84.473976 | |
| A87-84 | Corning | 1.486561 | 84.473232 | |
| N-FK51A | Schott | 1.48656 | 84.47 | |
| N-FK51 | Schott | 1.48656 | 84.47 | |
| FK51 | Schott | 1.486561 | 84.467994 | |
| A86-82 | Corning | 1.486052 | 81.814538 | |
| FK52 | Schott | 1.486052 | 81.802215 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| FCD1 | Hoya | 1.497 | 81.61 | |
| M-FCD1 | Hoya | 1.4971 | 81.56 | |
| FCD1B | Hoya | 1.4971 | 81.56 | |
| MP-FCD1-M20 | Hoya | 1.4969 | 81.51 | |
| MC-FCD1-M20 | Hoya | 1.4969 | 81.51 | |
| FCD10A | Hoya | 1.4586 | 90.19 | |
| FCD10 | Hoya | 1.4565 | 90.27 | |
| FCD100 | Hoya | 1.437 | 95.1 | |
| FCD705 | Hoya | 1.55032 | 75.5 | |
| FC5 | Hoya | 1.48749 | 70.44 |