TAFD6 by Hoya

Obsolete Unknown Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
Valid range: 0.334–2.325 µm
dn/dλ vs Wavelength
dn/dλ Calculator
Valid range: 0.334–2.325 µm
Abbe Number Calculator
Transmission vs Wavelength

No transmission data available.

Optical Properties
Refractive Index (nd) 1.847498
Abbe Number (Vd) 43.033415
Dispersion Formula Schott
Wavelength Range 0.334 — 2.325 µm
$$n(\lambda) = \sqrt{3.34852 - 0.0266304\,\lambda^2 + 0.00963399\,\lambda^{-2} + 0.00844302\,\lambda^{-4} - 0.0012429\,\lambda^{-6} + 7.65091 \times 10^{-5}\,\lambda^{-8}}$$
Thermal Properties
TCE -30/70°C (10-6/K) —
TCE 100/300°C (10-6/K) —
Thermal Conductivity (W/mK) —
Heat Capacity (J/gK) —
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[0 + 2(0)\,\Delta T + 3(0)\,\Delta T^2 + \frac{0 + 2(0)\,\Delta T}{\lambda - 0}\right] \Delta T = T - T_0, \quad T_0 = 25\,°\text{C}$$
Physical Properties
Density (g/cm³) —
Relative Cost —
Mechanical Properties
Young's Modulus (GPa) —
Poisson's Ratio —
Knoop Hardness (kgf/mm²) —
Chemical Resistance
Climatic Resistance —
Stain Resistance —
Acid Resistance —
Alkali Resistance —
Phosphate Resistance —
Similar Glasses (Other Manufacturers)
Glass Manufacturer nd Vd
K-VC99 Sumita 1.8506 41.6
K-VC99(M) Sumita 1.84604 41.5
N-LASF41 Schott 1.83501 43.13
LASFN8 Sumita 1.835 42.7
K-LaSFn8 Sumita 1.835 42.7
K-LaSFn8W Sumita 1.8349 42.7
S-LAH55VS Ohara 1.834809 42.74368
H-ZLAF55D CDGM 1.83481 42.725177
S-LAH55V Ohara 1.834807 42.725324
LAH55 Ohara 1.834807 42.72372
Similar Glasses (Hoya)
Glass Manufacturer nd Vd
TAFD34 Hoya 1.85033 42.7
TAFD5 Hoya 1.835 42.984244
TAFD5F Hoya 1.83481 42.72
TAFD5G Hoya 1.83481 42.72
MP-TAFD305 Hoya 1.85135 40.1
MC-TAFD305 Hoya 1.85135 40.1
M-TAFD305 Hoya 1.85135 40.1
MC-TAFD315 Hoya 1.85135 40.07
M-TAFD315 Hoya 1.85135 40.07
MP-TAFD51-50 Hoya 1.8213 42.72
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