M-TAFD315 by Hoya
Preferred
Very 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) | 1.85135 |
|---|---|
| Abbe Number (Vd) | 40.07 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{3.32607 - 0.0130989\,\lambda^2 + 0.0342179\,\lambda^{-2} + 0.000761028\,\lambda^{-4} + 1.42032 \times 10^{-5}\,\lambda^{-6} + 1.8681 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 6.4 |
|---|---|
| TCE 100/300°C (10-6/K) | 8.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.83 \times 10^{-6} + 2(5.95 \times 10^{-9})\,\Delta T + 3(-5.25 \times 10^{-12})\,\Delta T^2 + \frac{9.02 \times 10^{-7} + 2(7.15 \times 10^{-10})\,\Delta T}{\lambda - 0.189}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 5.13 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 4 |
| Acid Resistance | 2 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
Glass for molded optics lens
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| D-ZLAF85A-25 | CDGM | 1.8511 | 40.055609 | |
| D-ZLAF85A | CDGM | 1.85222 | 40.10819 | |
| L-LAH85V | Ohara | 1.854 | 40.378368 | |
| L-LAH85 | Ohara | 1.854 | 40.393284 | |
| D-ZLAF85L-25 | CDGM | 1.8526 | 40.534071 | |
| K-VC185(M) | Sumita | 1.84909 | 40.5 | |
| D-ZLAF85LS-25 | CDGM | 1.85344 | 40.557917 | |
| D-ZLAF85L | CDGM | 1.8537 | 40.579411 | |
| K-VC185 | Sumita | 1.85375 | 40.6 | |
| D-ZLAF85LS | CDGM | 1.8545 | 40.593546 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| MC-TAFD315 | Hoya | 1.85135 | 40.07 | |
| M-TAFD305 | Hoya | 1.85135 | 40.1 | |
| MP-TAFD305 | Hoya | 1.85135 | 40.1 | |
| MC-TAFD305 | Hoya | 1.85135 | 40.1 | |
| TAFD34 | Hoya | 1.85033 | 42.7 | |
| TAFD32 | Hoya | 1.8707 | 40.73 | |
| TAFD6 | Hoya | 1.847498 | 43.033415 | |
| TAFD5G | Hoya | 1.83481 | 42.72 | |
| TAFD5F | Hoya | 1.83481 | 42.72 | |
| TAFD13 | Hoya | 1.855396 | 36.557002 |