M-TAC80 by Hoya

Preferred Common Precision Molding Environmentally Friendly
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.36501–1.5296 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.36501–1.5296 µm
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Valid wavelength range: 0.280–1.550 µm
Optical Properties
Refractive Index (nd) 1.72903
Abbe Number (Vd) 54.04
Dispersion Formula Schott
Wavelength Range 0.36501 — 1.5296 µm
$$n(\lambda) = \sqrt{2.93519 - 0.0161935\,\lambda^2 + 0.0183923\,\lambda^{-2} + 0.00100862\,\lambda^{-4} - 8.75655 \times 10^{-5}\,\lambda^{-6} + 4.69213 \times 10^{-6}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) 6.1
TCE 100/300°C (10-6/K) 7.4
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[4.67546 \times 10^{-6} + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
Density (g/cm³) 4.28
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance 1
Stain Resistance 2
Acid Resistance 4
Alkali Resistance —
Phosphate Resistance —
Notes

Glass for molded optics lens

Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
S-LAL19 Ohara 1.72916 54.095223
D-LAK52-25 CDGM 1.72924 53.851219
D-LAK52 CDGM 1.7305 53.944268
N-LAK34 Schott 1.72916 54.5
LAL60 Ohara 1.725999 53.565698
S-LAL60 Ohara 1.725999 53.565698
S-LAL18 Ohara 1.729157 54.680013
LAL18 Ohara 1.729157 54.683134
H-LAK52 CDGM 1.72916 54.684737
K-LaK18 Sumita 1.72916 54.7
Similar Glasses (Hoya)
Glass Manufacturer nd Vd
MP-TAC80-60 Hoya 1.72963 54.07
TAC8P Hoya 1.72916 54.54
TAC8 Hoya 1.72916 54.67
TAC1 Hoya 1.725999 53.41758
MP-LAC8-30 Hoya 1.7133 53.95
TAC2 Hoya 1.741 52.61
M-LAC8 Hoya 1.713 53.94
LAC8 Hoya 1.713 53.94
TAC4 Hoya 1.734 51.05
LAC10 Hoya 1.72 50.35
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