TAC6 by Hoya
Standard
Rare
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) | 1.755 |
|---|---|
| Abbe Number (Vd) | 52.32 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{3.01822 - 0.0153816\,\lambda^2 + 0.0215201\,\lambda^{-2} + 0.000646083\,\lambda^{-4} - 3.23557 \times 10^{-5}\,\lambda^{-6} + 2.07916 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.7 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.4 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.08 \times 10^{-6} + 2(9.3 \times 10^{-9})\,\Delta T + 3(-1.93 \times 10^{-11})\,\Delta T^2 + \frac{6.94 \times 10^{-7} + 2(8.58 \times 10^{-10})\,\Delta T}{\lambda - 0.0481}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 4.27 |
|---|---|
| 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 | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
General glass Type.
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| H-LAK53A | CDGM | 1.755 | 52.320574 | |
| S-LAH97 | Ohara | 1.755 | 52.318818 | |
| S-YGH51 | Ohara | 1.754998 | 52.321434 | |
| H-LAK53B | CDGM | 1.755 | 52.322058 | |
| YGH51 | Ohara | 1.754998 | 52.326713 | |
| N-LAK33B | Schott | 1.755 | 52.3 | |
| K-LaSKn1 | Sumita | 1.755 | 52.4 | |
| LASKN1 | Sumita | 1.755 | 52.4 | |
| N-LAK33A | Schott | 1.75393 | 52.27 | |
| N-LAK33 | Schott | 1.753977 | 52.430467 |